Author: "V. F. E. Pucknell" - Searchworks@Jio Institute Digital Library Search Results

Your search keyword '"V. F. E. Pucknell"' showing total 55 results

Start Over Author "V. F. E. Pucknell"

55 results on '"V. F. E. Pucknell"'

1. β -Delayed One and Two Neutron Emission Probabilities Southeast of Sn132 and the Odd-Even Systematics in r -Process Nuclide Abundances

Author: V. H. Phong, S. Nishimura, G. Lorusso, T. Davinson, A. Estrade, O. Hall, T. Kawano, J. Liu, F. Montes, N. Nishimura, R. Grzywacz, K. P. Rykaczewski, J. Agramunt, D. S. Ahn, A. Algora, J. M. Allmond, H. Baba, S. Bae, N. T. Brewer, C. G. Bruno, R. Caballero-Folch, F. Calviño, P. J. Coleman-Smith, G. Cortes, I. Dillmann, C. Domingo-Pardo, A. Fijalkowska, N. Fukuda, S. Go, C. J. Griffin, J. Ha, L. J. Harkness-Brennan, T. Isobe, D. Kahl, L. H. Khiem, G. G. Kiss, A. Korgul, S. Kubono, M. Labiche, I. Lazarus, J. Liang, Z. Liu, K. Matsui, K. Miernik, B. Moon, A. I. Morales, P. Morrall, N. Nepal, R. D. Page, M. Piersa-Siłkowska, V. F. E. Pucknell, B. C. Rasco, B. Rubio, H. Sakurai, Y. Shimizu, D. W. Stracener, T. Sumikama, H. Suzuki, J. L. Tain, H. Takeda, A. Tarifeño-Saldivia, A. Tolosa-Delgado, M. Wolińska-Cichocka, P. J. Woods, and R. Yokoyama
Subjects: General Physics and Astronomy
Published: 2022

2. β-Delayed One and Two Neutron Emission Probabilities Southeast of ^{132}Sn and the Odd-Even Systematics in r-Process Nuclide Abundances

Author: V H, Phong, S, Nishimura, G, Lorusso, T, Davinson, A, Estrade, O, Hall, T, Kawano, J, Liu, F, Montes, N, Nishimura, R, Grzywacz, K P, Rykaczewski, J, Agramunt, D S, Ahn, A, Algora, J M, Allmond, H, Baba, S, Bae, N T, Brewer, C G, Bruno, R, Caballero-Folch, F, Calviño, P J, Coleman-Smith, G, Cortes, I, Dillmann, C, Domingo-Pardo, A, Fijalkowska, N, Fukuda, S, Go, C J, Griffin, J, Ha, L J, Harkness-Brennan, T, Isobe, D, Kahl, L H, Khiem, G G, Kiss, A, Korgul, S, Kubono, M, Labiche, I, Lazarus, J, Liang, Z, Liu, K, Matsui, K, Miernik, B, Moon, A I, Morales, P, Morrall, N, Nepal, R D, Page, M, Piersa-Siłkowska, V F E, Pucknell, B C, Rasco, B, Rubio, H, Sakurai, Y, Shimizu, D W, Stracener, T, Sumikama, H, Suzuki, J L, Tain, H, Takeda, A, Tarifeño-Saldivia, A, Tolosa-Delgado, M, Wolińska-Cichocka, P J, Woods, and R, Yokoyama
Abstract: The β-delayed one- and two-neutron emission probabilities (P_{1n} and P_{2n}) of 20 neutron-rich nuclei with N≥82 have been measured at the RIBF facility of the RIKEN Nishina Center. P_{1n} of ^{130,131}Ag, ^{133,134}Cd, ^{135,136}In, and ^{138,139}Sn were determined for the first time, and stringent upper limits were placed on P_{2n} for nearly all cases. β-delayed two-neutron emission (β2n) was unambiguously identified in ^{133}Cd and ^{135,136}In, and their P_{2n} were measured. Weak β2n was also detected from ^{137,138}Sn. Our results highlight the effect of the N=82 and Z=50 shell closures on β-delayed neutron emission probability and provide stringent benchmarks for newly developed macroscopic-microscopic and self-consistent global models with the inclusion of a statistical treatment of neutron and γ emission. The impact of our measurements on r-process nucleosynthesis was studied in a neutron star merger scenario. Our P_{1n} and P_{2n} have a direct impact on the odd-even staggering of the final abundance, improving the agreement between calculated and observed Solar System abundances. The odd isotope fraction of Ba in r-process-enhanced (r-II) stars is also better reproduced using our new data.
Published: 2022

3. In-ring Applications of UHV-compatible Charged Particle Detectors

Author: P. J. Coleman-Smith, David Seddon, Thomas Davinson, Alan F. Grant, S.L. Thomas, John Simpson, Paul Morrall, NuCAR Collaborations, I.H. Lazarus, Michael Cordwell, Carlo Bruno, Philip Woods, Claudia Lederer-Woods, and V. F. E. Pucknell
Subjects: Materials science, Charged particle detectors, Atomic physics, Ring (chemistry)
Published: 2021

4. Investigation of the Δn = 0 selection rule in Gamow-Teller transitions: The β-decay of 207Hg

Author: Mark Huyse, Claes Fahlander, Edward Simpson, R. Lica, F. Rotaru, A. Negret, R. Wadsworth, C. Sotty, H. O. U. Fynbo, István Kuti, Ángel Perea, Olof Tengblad, N.K. Timofeyuk, María José García Borge, M. V. Lund, A. Gredley, W. Gelletly, R. Mărginean, Raymond J. Carroll, C. R. Niţă, Zena Patel, R. E. Mihai, V. Vedia, Philip M Walker, Zs. Podolyák, C. Mihai, Miguel Madurga, E. Rapisarda, F. Wearing, Joonas Konki, S. Lalkovski, P. Van Duppen, I. Marroquin, V. F. E. Pucknell, H. De Witte, T. Alexander, Panu Rahkila, I.H. Lazarus, J. Creswell, L. M. Fraile, Paul Greenlees, S. Ansari, P. H. Regan, L. J. Harkness-Brennan, N. Marginean, T. Berry, Thierry Stora, R. B. Gerst, S. M. Judge, C. M. Shand, Enrique Nácher, S. Pascu, A. Turturica, S. Stegemann, Andrei Andreyev, N. Warr, S. Nae, R. D. Page, D. S. Judson, J. Kurcewicz, H. Grawe, M. Górska, European Commission, Science and Technology Facilities Council (UK), Ministerio de Economía y Competitividad (España), Ministerio de Ciencia, Innovación y Universidades (España), Research Foundation - Flanders, University of Leuven, Belgian Science Policy Office, Helmholtz-Zentrum Berlin for Materials and Energy, National Measurement Office (UK), and SCOAP
Subjects: Physics, Nuclear and High Energy Physics, ta114, 010308 nuclear & particles physics, State (functional analysis), 01 natural sciences, lcsh:QC1-999, Nuclear physics, medicine.anatomical_structure, Nucleosynthesis, 0103 physical sciences, medicine, Nuclear Physics - Experiment, Limit (mathematics), Gamow-Teller transitions, ydinfysiikka, 010306 general physics, Ground state, Wave function, Nuclear Experiment, Nucleus, lcsh:Physics
Abstract: 5 pags., 3 figs., 1 tab. -- Open Access funded by Creative Commons Atribution Licence 4.0, Gamow-Teller β decay is forbidden if the number of nodes in the radial wave functions of the initial and final states is different. This Δn=0 requirement plays a major role in the β decay of heavy neutron-rich nuclei, affecting the nucleosynthesis through the increased half-lives of nuclei on the astrophysical r-process pathway below both Z=50 (for N>82) and Z=82 (for N>126). The level of forbiddenness of the Δn=1ν1g →π0g transition has been investigated from the β decay of the ground state of Hg into the single-proton-hole nucleus Tl in an experiment at the ISOLDE Decay Station. From statistical observational limits on possible γ-ray transitions depopulating the π0g state in Tl, an upper limit of 3.9×10 % was obtained for the probability of this decay, corresponding to log⁡ft>8.8 within a 95% confidence limit. This is the most stringent test of the Δn=0 selection rule to date., Support from the European Union seventh framework through ENSAR contract no. 262010, the Science and Technology Facilities Council through grants ST/P005314/1, ST/L005743/1 and ST/J000051/1 (UK), the MINECO projects FPA2015-64969-P, FPA2015-65035-P and FPA2017-87568-P (Spain), FWO-Vlaanderen (Belgium), GOA/2015/010 (BOF KU Leuven), the Excellence of Science programme (EOS-FWO), and the Interuniversity Attraction Poles Programme initiated by the Belgian Science Policy Office (BriX network P7/12) is acknowledged. ZsP acknowledges support by the ExtreMe Matter Institute EMMI at the GSI Helmholtzzentrum für Schwerionenforschung, Darmstadt, Germany. PHR and SMJ ac-knowledge support from the UK Department for Business, Energy and Industrial Strategy via the National Measurement Office.
Published: 2019

5. Competition between allowed and first-forbidden β decays of At208 and expansion of the Po208 level scheme

Author: L. J. Harkness-Brennan, I. Marroquin, Raymond J. Carroll, Zs. Podolyák, E. Rapisarda, R. Shearman, S. Vinals, J. Konki, C. Sotty, R. Mărginean, A. N. Andreyev, Edward Simpson, R. Lica, J. Kurcewicz, J. G. Cubiss, L. M. Fraile, P. Rahkila, A. Negret, Paul Greenlees, M. Piersa, H. O. U. Fynbo, Olof Tengblad, S. Pascu, P. H. Regan, F. Rotaru, Ángel Perea, V. Vedia, Marc Huyse, M. J. G. Borge, I.H. Lazarus, N. Marginean, V. F. E. Pucknell, Robert Page, B. A. Brown, R. Wadsworth, P. Van Duppen, D. S. Judson, C. Mihai, M. Rudigier, T. Berry, M. Madurga, Enrique Nácher, Thierry Stora, H. De Witte, C. M. Shand, N. Warr, J. Phrompao, E.R. Gamba, and M. Brunet
Subjects: Physics, 010308 nuclear & particles physics, SHELL model, 01 natural sciences, Core (optical fiber), Nucleosynthesis, Position (vector), Beta (plasma physics), Excited state, 0103 physical sciences, Atomic physics, 010306 general physics, Spectroscopy, Excitation
Abstract: The structure of Po-208 populated through the EC/beta(+) decay of At-208 is investigated using gamma-ray spectroscopy at the ISOLDE Decay Station. The presented level scheme contains 27 new excited states and 43 new transitions, as well as a further 50 previously observed. rays which have been (re)assigned a position. The level scheme is compared to shell model calculations. Through this analysis approximately half of the beta-decay strength of At-208 is found to proceed via allowed decay and half via first-forbidden decay. The first-forbidden transitions predominantly populate core excited states at high excitation energies, which is qualitatively understood using shell model considerations. This mass region provides an excellent testing ground for the competition between allowed and first-forbidden beta-decay calculations, important for the detailed understanding of the nucleosynthesis of heavy elements.
Published: 2021

6. β-delayed neutron emission of r-process nuclei at the N = 82 shell closure

Author: K. Matsui, Shintaro Go, G. G. Kiss, M. Labiche, C. J. Griffin, A. Estrade, Iris Dillmann, B. Rubio, Carlo Bruno, Robert Grzywacz, H. Baba, V. H. Phong, J. Ha, V. F. E. Pucknell, C. Domingo-Pardo, J. Agramunt, N. Nepal, A. Korgul, Shunji Nishimura, R. Yokoyama, P. J. Coleman-Smith, G. Cortes, H. Suzuki, J. L. Tain, L. J. Harkness-Brennan, D. W. Stracener, J. Liu, J. Liang, H. Takeda, Zi Hong Liu, D. S. Ahn, M. Wolińska-Cichocka, Y. Shimizu, A. I. Morales, Ariel Tarifeño-Saldivia, T. Davinson, L. H. Khiem, M. Piersa, N. Fukuda, P. J. Woods, Shigeru Kubono, F. Calviño, R. Caballero-Folch, K. Miernik, K. P. Rykaczewski, Alejandro Algora, A. Tolosa-Delgado, Hiroyoshi Sakurai, B. Moon, Fernando Montes, B.C. Rasco, A. Fijalkowska, T. Isobe, I.H. Lazarus, P.S. Morrall, Giuseppe Lorusso, D. Kahl, J. M. Allmond, S. Bae, N. T. Brewer, R. D. Page, Toshiyuki Sumikama, Matthew Mumpower, O. Hall, Universitat Politècnica de Catalunya. Departament de Física, and Universitat Politècnica de Catalunya. ANT - Advanced Nuclear Technologies Research Group
Subjects: Nuclear and High Energy Physics, National security, QC1-999, ß-delayed, Nuclear physics, Library science, Neutrons--Captura, β-delayed neutron emission, 7. Clean energy, 01 natural sciences, Neutrons--Capture, Astrophysical, 0103 physical sciences, European commission, r-processimportant, 010306 general physics, China, Nuclear Experiment, Neutron emissionr-process, Physics, Física [Àrees temàtiques de la UPC], 010308 nuclear & particles physics, business.industry, r-process, Chinese academy of sciences, beta-delayed neutron emission, Research council, Christian ministry, Física nuclear, National laboratory, business, Administration (government)
Abstract: This experiment was performed at RI Beam Factory operated by RIKEN Nishina Center and CNS, University of Tokyo. O.H, T.D, P.J.W, C.G.B, C.J.G and D.K would like to thank STFC, UK for support. This research was sponsored in part by the Office of Nuclear Physics, U.S. Department of Energy under Award No. DE-FG02-96ER40983 (UTK) and DEAC05-00OR22725 (ORNL), and by the National Nuclear Security Administration under the Stewardship Science Academic Alliances program through DOE Award No. DENA0002132. This work was supported by National Science Foundation under Grants No. PHY-1430152 (JINA Center for the Evolution of the Elements), No. PHY-1565546 (NSCL), and No. PHY-1714153 (Central Michigan University). This work was supported by the Polish National Science Center under Contracts No. UMO-2015/18/E/ST2/00217, No. 2017/01/X/ST2/01144, No. 2019/33/N/ST2/03023 and No. 2020/36/T/ST2/00547. This work was also supported by JSPS KAKENHI (Grants No. 14F04808, No. 17H06090, No. 25247045, and No. 19340074). This work was also supported by Spanish Ministerio de Economia y Competitividad grants (FPA2011-06419, FPA2011-28770-C03-03, FPA2014-52823-C2-1-P, FPA2014-52823-C2-2-P, SEV-2014-0398, IJCI-2014-19172), by European Commission FP7/EURATOM Contract No. 605203, by the UK Science and Technology Facilities Council Grant No. ST/N00244X/1, by the National Research Foundation (NRF) in South Korea (No. 2016K1A3A7A09005575, No. 2015H1A2A1030275) and by the Natural Sciences and Engineering Research Council of Canada (NSERC) via the Discovery Grants SAPIN-2014-00028 and RGPAS 462257-2014. TRIUMF receives federal funding via a contribution agreement with the National Research Council Canada. This work was also supported by NKFIH (NN128072), and by the UNKP-20-5-DE-2 New National Excellence Program of the Ministry of Human Capacities of Hungary. G.G.K. acknowledges support from the Janos Bolyai research fellowship of the Hungarian Academy of Sciences. M.W.-C. acknowledges support from the Polish NCN project Miniatura No. 2017/01/X/ST2/01144. Z.L was supported by the National Key Research and Development Program of China (Contract No. 2018YFA0404402), the National Natural Science Foundation of China (Grants No. 11961141004, No. 11735017, No. 11675225 and No. 11635003) and the Strategic Priority Research Program of Chinese Academy of Sciences (Grant No. XDB34000000). M.R.M. performed this work under the auspice of the U.S. Department of Energy at Los Alamos National Laboratory. Los Alamos National Laboratory is operated by Triad National Security, LLC, for the National Nuclear Security Administration of U.S. Department of Energy (Contract No. 89233218CNA000001).
Published: 2021

7. Competition between Allowed and First-Forbidden β Decay: The Case of Hg208→Tl208

Author: V. F. E. Pucknell, R.-B. Gerst, M. Lund, I.H. Lazarus, P. H. Regan, N. Marginean, R. Shearman, J. Phrompao, M. Piersa, V. Vedia, Miguel Madurga, R. Lica, Marc Huyse, F. Wearing, J. Kurcewicz, J. R. Creswell, María José García Borge, R. Mărginean, L. M. Fraile, W. Gelletly, S. Pascu, István Kuti, S. Stegemann, T. Alexander, A. Negret, C. R. Nita, Paul Greenlees, C. Mihai, Raymond J. Carroll, Andrei Andreyev, F. Rotaru, Ángel Perea, R. D. Page, P. M. Walker, M. Brunet, Zs. Podolyák, I. Marroquin, R. Wadsworth, D. S. Judson, A. Gredley, P. Van Duppen, E. Rapisarda, M. Rudigier, H. De Witte, Zena Patel, T. Berry, Enrique Nácher, H. Grawe, M. Górska, N. Warr, L. J. Harkness-Brennan, S. Lalkovski, S. M. Judge, P. Rahkila, Joonas Konki, S. Ansari, Thierry Stora, C. M. Shand, R. E. Mihai, E. R. Gamba, Claes Fahlander, H. O. U. Fynbo, Olof Tengblad, and C. Sotty
Subjects: Physics, Nuclear Theory, General Physics and Astronomy, Parity (physics), 01 natural sciences, 7. Clean energy, Neutron capture, medicine.anatomical_structure, Nucleosynthesis, Excited state, 0103 physical sciences, medicine, Neutron, Atomic physics, Nuclear Experiment, 010306 general physics, Nucleus, Fermi Gamma-ray Space Telescope
Abstract: The β decay of ^{208}Hg into the one-proton hole, one neutron-particle _{81}^{208}Tl_{127} nucleus was investigated at CERN-ISOLDE. Shell-model calculations describe well the level scheme deduced, validating the proton-neutron interactions used, with implications for the whole of the N>126, Z
Published: 2020

8. Study of exotic decay of Cs isotope close to the proton drip line

Author: R. Wadsworth, Thierry Stora, Ushasi Dattaf, Panu Rahkila, Miguel Madurga, S. Chakraborty, A Becerril, F. Rotaru, E. Rapisarda, Ángel Perea, Olof Tengblad, S. Pascu, P Bhattacharya, L. M. Fraile, V. F. E. Pucknell, L. J. Harkness-Brennan, S. K. Mandal, P. Das, A. Bhattacharyya, I.H. Lazarus, Robert Page, R. Mărginean, A. Rahman, N. Marginean, Enrique Nácher, N. Warr, Andrei Andreyev, V. Vedia, Joonas Konki, J. Ray, Marc Huyse, Paul Greenlees, D. S. Judson, A. Gottberg, Joakim Cederkäll, Cosmin Teodor Mihai, I. Morroquin, H. De Witte, Magda Kowalska, R. Lica, María José García Borge, J. Kurcewicz, C. Sotty, A. Negret, P. Van Duppen, Science and Engineering Research Board (India), Department of Atomic Energy (India), European Commission, Ministerio de Economía y Competitividad (España), and Council for Scientific and Industrial Research (India)
Subjects: History, Proton, Ground state, Particle emissions, Nuclear Theory, Exotic decay, Proton spectra, Spallation reactions, Cesium, 01 natural sciences, Lanthanum compounds, Education, Nuclear physics, Particle emission, Germanium compounds, Gamma detectors, 0103 physical sciences, Nuclear Physics - Experiment, Spallation, 010306 general physics, Nuclear Experiment, Line (formation), Physics, Large Hadron Collider, Isotope, 010308 nuclear & particles physics, Charged particle arrays, Charged particle, Computer Science Applications, Physics::Accelerator Physics, Time distribution, Física nuclear, Unbound state, ydinfysiikka
Abstract: 6 pags., 6 figs. -- 27th International Nuclear Physics Conference (INPC2019) 29 July - 2 August 2019, Glasgow, UK, The neutron-deficient 115Cs was produced at ISOLDE, CERN by spallation reaction using 1.4 GeV proton on LaC2 target. The exotic decay modes were studied by using a charged particle array (DSSD and pad detectors) and a ¿-detector array (four Clovers) at the ISOLDE decay station (IDS). In this report, results on observed ß-delayed particle emission from 115Cs, a nucleus close to proton drip line, is presented. By measuring the time distribution in the delayed proton spectrum, the half-life of the ground state of 115Cs was extracted. The obtained half-life is in agreement with previous reported value. For the first time, the p-unbound states of 115Xe, obtained by measuring beta-delayed protons from 115Cs is reported., Ushasi Datta acknowledges with thanks to SERB, India for the financial support (travel) for attending and presenting the paper in the conference (INPC2019). Authors of SINP deeply acknowledge the SEND (XI th plan, DAE, India) and IENP/HENPP (XII th plan, DAE, India) project grant. This project has received funding from the European Union’s Horizon 2020 ENSAR2 project under grant agreement no 654002 and the Spanish research council under contract FPA2015-64969-P. The authors (P.Das and A.Bhattacharyya) acknowledge with thanks the financial support provided by the CSIR vide file number 09/489(0111)/2019EMR-I and 09/489(0115)/2019EMR-I respectively.
Published: 2020

9. FATIMA — FAst TIMing Array for DESPEC at FAIR

Author: V. F. E. Pucknell, C. R. Nita, I. Burrows, J. Vesic, C. Townsley, L. M. Fraile, J. Gerl, R. Canavan, J.-M. Régis, L. M. Gerhard, J. Simpson, E.R. Gamba, I.H. Lazarus, D. M. Cullen, P. H. Regan, Alison Bruce, M. Rudigier, H. Schaffner, J. Jolie, Alec Grant, Pushpendra Singh, S. Lalkovski, Oliver J. Roberts, W. Korten, V. Karayonchev, J. F. Smith, N. Kurz, M. Górska, Zs. Podolyák, Institut de Recherches sur les lois Fondamentales de l'Univers (IRFU), and Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université Paris-Saclay
Subjects: Nuclear and High Energy Physics, Fast timing, Scintillator, NuSTAR, 01 natural sciences, Coincidence, DESPEC, Optics, Data acquisition, 0103 physical sciences, LaBr 3 (Ce) scintillator detectors, [PHYS.PHYS.PHYS-INS-DET]Physics [physics]/Physics [physics]/Instrumentation and Detectors [physics.ins-det], 010306 general physics, Instrumentation, FAIR, Physics, 010308 nuclear & particles physics, business.industry, Detector, Centroid, Full width at half maximum, Cascade, LaBr[formula omitted](Ce) scintillator detectors, business, Energy (signal processing)
Abstract: Nuclear instruments & methods in physics research / A Accelerators, spectrometers, detectors and associated equipment Section A 969, 163967 (2020). doi:10.1016/j.nima.2020.163967, Published by North-Holland Publ. Co., Amsterdam
Published: 2020

10. Fast-timing measurements in the ground-state band of Pd114

Author: T. Lauritsen, T. Kröll, L. A. Gurgi, F. G. Kondev, G. J. Lane, I. Burrows, D. M. Cullen, O. Yordanov, S. Lalkovski, Alison Bruce, John P. Greene, T. Daniel, V. F. E. Pucknell, D. Seweryniak, D. J. Hartley, Gavin Lotay, C. M. Shand, M. Smolen, T. Berry, S. Bottoni, C. R. Niţă, E. A. Stefanova, J. Sethi, E.R. Gamba, R. Ilieva, M. Carmona Gallardo, S. Zhu, J. Rohrer, J. T. Anderson, A. D. Ayangeakaa, S. Ilieva, J. Simpson, Matthew Reed, M. P. Carpenter, P. Copp, M. Rudigier, V. Vedia, I.H. Lazarus, P. H. Regan, Raymond J. Carroll, Zs. Podolyák, and G. Fernández Martínez
Subjects: Physics, Work (thermodynamics), Isotope, Yrast, chemistry.chemical_element, medicine.anatomical_structure, chemistry, medicine, Gammasphere, Interacting boson model, Atomic physics, Ground state, Nucleus, Palladium
Abstract: Using a hybrid Gammasphere array coupled to 25 LaBr3(Ce) detectors, the lifetimes of the first three levels of the yrast band in ¹¹⁴Pd populated via ²⁵²Cf decay, have been measured. The measured lifetimes are τ₂+=103(10)ps, τ₄+=22(13)ps, and τ₆+≤10ps for the 2⁺₁, 4⁺₁, and 6⁺₁ levels, respectively. Palladium-114 was predicted to be the most deformed isotope of its isotopic chain, and spectroscopic studies have suggested it might also be a candidate nucleus for low-spin stable triaxiality. From the lifetimes measured in this work, reduced transition probabilities B(E2;J→J−2) are calculated and compared with interacting boson model, projected shell model, and collective model calculations from the literature. The experimental ratio RB(E₂)=B(E2;4⁺₁→2⁺₁)/B(E2;2⁺₁→0⁺₁)=0.80(42) is measured for the first time in ¹¹⁴Pd and compared with the known values RB(E₂) in the palladium isotopic chain: the systematics suggest that, for N=68, a transition from γ-unstable to a more rigid γ-deformed nuclear shape occurs.
Published: 2019

11. Strong one-neutron emission from two-neutron unbound states in β decays of the r -process nuclei Ga86,87

Author: G. Cortes, L. J. Harkness-Brennan, X. X. Xu, Robert Grzywacz, K. Matsui, G. G. Kiss, A. Algora, C. Domingo-Pardo, H. Takeda, D. S. Ahn, K. P. Rykaczewski, Mustafa Rajabali, J. Simpson, C. J. Griffin, M. Singh, Y. Saito, K. Miernik, P. J. Woods, Shigeru Kubono, Le Hong Khiem, D. W. Stracener, Jun Liang, M. Karny, N. Nepal, A. Korgul, R. Caballero-Folch, T. Isobe, M. Wolińska-Cichocka, Hiroyoshi Sakurai, P. J. Coleman-Smith, H. Baba, V. H. Phong, A. I. Morales, T. T. King, S.L. Thomas, Toshiyuki Sumikama, Fernando Montes, Joseph Heideman, Ariel Tarifeño-Saldivia, M. Prydderch, I.H. Lazarus, J. Ha, A. Estrade, H. Suzuki, M. Piersa, N. Fukuda, F. Calviño, Jorge Agramunt, R. Yokoyama, B. C. Rasco, Shintaro Go, J. M. Allmond, J. L. Tain, Rebecca Surman, Giuseppe Lorusso, S. Bae, D. Kahl, Berta Rubio, O. Hall, M. Madurga, Toshihiko Kawano, P. Morrall, N. T. Brewer, R. D. Page, M. Labiche, JJ Liu, V. F. E. Pucknell, A. Tolosa-Delgado, Y. Shimizu, Shunji Nishimura, Iris Dillmann, T. Davinson, and C. G. Bruno
Subjects: Physics, Nuclear physics, 010308 nuclear & particles physics, Neutron emission, 0103 physical sciences, Nuclear structure, r-process, Neutron, 010306 general physics, 01 natural sciences, Delayed neutron, Beta decay, 3. Good health
Abstract: Aquesta es una copia de la versio author’s final draft d'un article publicat a la revista [Physical Review C ]. URL d'aquest document a UPCommons E-prints: http://hdl.handle.net/2117/174873
Published: 2019

12. Normal and intruder configurations in Si34 populated in the β− decay of Mg34 and Al34

Author: Ph. Dessagne, Alin Titus Serban, J. Mrazek, J. Pakarinen, V. F. E. Pucknell, O. Sorlin, F. Negoita, P. Morfouace, Carmen Gheorghe, P. Rahkila, E. Rapisarda, C. Sotty, J. Konki, C. Borcea, Olof Tengblad, S. Franchoo, A. N. Andreyev, Ph Morel, A. Turturica, Paul Greenlees, H. M. Lazarus, F. Nowacki, S. Kisyov, A. Poves, M. Stanoiu, R. Mărginean, S. Grévy, R. E. Mihai, L. M. Fraile, Cosmin Teodor Mihai, J. M. Daugas, Thierry Stora, A. Ionescu, A. Negret, M. J. G. Borge, N. Marginean, L. Stan, S. Calinescu, R. Lica, R. Borcea, C. Costache, H. De Witte, István Kuti, Marc Huyse, D. M. Filipescu, R. D. Page, M. Madurga, P. Van Duppen, N. Warr, and F. Rotaru
Subjects: Physics, 010308 nuclear & particles physics, Neutron emission, 0103 physical sciences, SHELL model, Nuclear structure, Atomic physics, 010306 general physics, Spectroscopy, 01 natural sciences
Abstract: The structure of $^{34}$Si was studied through $\gamma$ spectroscopy separately in the $\beta^-$ decays of $^{34}$Mg and $^{34}$Al at the ISOLDE facility of CERN. Different configurations in $^{34}$Si were populated independently from the two recently identified $\beta$-decaying states in $^{34}$Al having spin-parity assignments $J^\pi = 4^-$ dominated by the normal configuration $\pi (d_{5/2})^{-1} \otimes \nu (f_{7/2})$ and $J^\pi = 1^+$ by the intruder configuration $\pi (d_{5/2})^{-1} \otimes \nu (d_{3/2})^{-1}(f_{7/2})^{2}$. The paper reports on spectroscopic properties of $^{34}$Si such as an extended level scheme, spin and parity assignments based on log($ft$) values and $\gamma$-ray branching ratios, absolute $\beta$ feeding intensities and neutron emission probabilities. A total of 11 newly identified levels and 26 transitions were added to the previously known level scheme of $^{34}$Si. Large scale shell-model calculations using the {\sc sdpf-u-mix} interaction, able to treat higher order intruder configurations, are compared with the new results and conclusions are drawn concerning the predictive power of {\sc sdpf-u-mix}, the $N=20$ shell gap, the level of mixing between normal and intruder configurations for the 0$_1^+$, 0$_2^+$ and 2$_1^+$ states and the absence of triaxial deformation in $^{34}$Si.
Published: 2019

13. β decay of In133 : γ emission from neutron-unbound states in Sn133

Author: Robert Grzywacz, B. A. Marsh, J. G. Correia, M. Fila, L. M. Fraile, D. V. Fedorov, C. Costache, R. Lica, K. Chrysalidis, J. M. Udías, L. J. Harkness-Brennan, A. Turturica, S. Pascu, William B. Walters, Z. Janas, S. Viñals, S. Paulaskalas, Miguel Madurga, B. Olaizola, J. Benito, G. S. Simpson, A. Villa, R. Mărginean, V. N. Fedosseev, Henryk Mach, J. Kurcewicz, K. Miernik, V. F. E. Pucknell, C. Henrich, Joonas Konki, L. Stan, C. Mazzocchi, F. Rotaru, Ángel Perea, J.-M. Régis, C. Sotty, M. Kicińska-Habior, Robert Page, T. Day Goodacre, M. Carmona, A. Fijałkowska, E. Rapisarda, María José García Borge, A. E. Barzakh, R. Álvarez-Rodríguez, Sebastian Rothe, J. G. Cubiss, Paul Greenlees, C. Mihai, A. Illana, A. N. Andreyev, P. Rahkila, V. Vedia, A. Korgul, Marc Huyse, V. Sánchez-Tembleque, D. Galaviz, M. Stryjczyk, M. C. Martínez, H. De Witte, E. Adamska, I.H. Lazarus, N. Marginean, T. Berry, A. Negret, G. Fernández-Martínez, Enrique Nácher, N. Warr, H. O. U. Fynbo, Olof Tengblad, G. Benzoni, Karl Johnston, P. Van Duppen, M. Stanoiu, D. S. Judson, I. Marroquín, R. Wadsworth, V. Karanyonchev, and M. Piersa
Subjects: Physics, Spin states, 010308 nuclear & particles physics, Gamma ray, 01 natural sciences, 7. Clean energy, Beta decay, Ion source, 3. Good health, Ionization, Excited state, 0103 physical sciences, Neutron, Atomic physics, 010306 general physics, Ground state
Abstract: Excited states in Sn-133 were investigated through the beta decay of In-133 at the ISOLDE facility. The ISOLDE Resonance Ionization Laser Ion Source (RILIS) provided isomer-selective ionization for In-133, allowing us to study separately, and in detail, the beta-decay branch of In-133 J(pi)= (9/2(+)) ground state and its J(pi) = (1/2(-)) isomer.Thanks to the large spin difference of the two beta-decaying states of In-133, it is possible to investigate separately the lower and higher spin states in the daughter, Sn-133, and thus to probe independently different single-particle and single-hole levels. We report here new gamma transitions observed in the decay of In-133, including those assigned to the deexcitation of the neutron-unbound states.
Published: 2019

14. Improving Nuclear Data Input for r-Process Calculations Around A $$\sim $$ 80

Author: A. Tolosa-Delgado, J. Agramunt, D. S. Ahn, A. Algora, H. Baba, S. Bae, N. T. Brewer, C. Bruno, R. Caballero Folch, F. Calviño, P. J. Coleman-Smith, G. Cortés, T. Davinson, I. Dillmann, C. Domingo-Pardo, A. Estrade, N. Fukuda, S. Go, C. J. Griffin, R. Grzywacz, J. Ha, O. Hall, L. Harkness-Brennan, T. Isobe, D. Kahl, M. Karny, L. H. Khiem, G. G. Kiss, M. Kogimtzis, S. Kubono, M. Labiche, I. Lazarus, J. Lee, J. Liang, J. Liu, G. Lorusso, K. Matsui, K. Miernik, F. Montes, B. Moon, A. I. Morales, N. Nepal, S. Nishimura, R. D. Page, V. H. Phong, Z. Podolyak, V. F. E. Pucknell, B. C. Rasco, P. Regan, A. Riego, B. Rubio, K. P. Rykaczewski, Y. Saito, H. Sakurai, Y. Shimizu, J. Simpson, P.-A. Söderström, D. W. Stracener, T. Sumikama, H. Suzuki, J. L. Tain, M. Takechi, H. Takeda, A. Tarifeño-Saldivia, S. L. Thomas, P. J. Woods, X. X. Xu, and R. Yokoyama
Subjects: Nuclear physics, Physics, Abundance (ecology), Neutron emission, r-process, Nuclear data, Measure (mathematics)
Abstract: © 2019, Springer Nature Switzerland AG. We made an experiment to measure half-lives T1/2 and neutron emission probabilities Pxn of nuclei around mass 80, aiming to improve r-process abundance calculations around the first abundance peak with a new dedicated experimental setup at RIKEN. Details of the experiment and a few preliminary results are presented.
Published: 2019

15. First Accurate Normalization of the β -delayed α Decay of N16 and Implications for the C12(α,γ)O16 Astrophysical Reaction Rate

Author: Oliver S. Kirsebom, H. De Witte, L. J. Harkness-Brennan, P. Rahkila, Jesper Hasseriis Mohr Jensen, P. Díaz Fernández, Esben Rohan Christensen, V. F. E. Pucknell, Ángel Perea, Björn Jonson, M. Munch, K. Riisager, P. Van Duppen, M.C. Gallardo, A. Negret, R. Mărginean, R. Lica, R. D. Page, María José García Borge, M. V. Lund, D.T. Doherty, O. Sorlin, T. Berry, N. Warr, Miguel Madurga, L. M. Fraile, H. Törnqvist, Paul Greenlees, J. A. Swartz, Andrei Andreyev, H. O. U. Fynbo, Olof Tengblad, N. Hubbard, I. Marroquin, C. Sotty, Håkan T Johansson, V. Vedia, Marc Huyse, D. S. Judson, H.B. Sørensen, C. Mihai, I.H. Lazarus, N. Marginean, and Joonas Konki
Subjects: Physics, Nuclear reaction, Nuclear physics, Reaction rate, Normalization (statistics), Light nucleus, 010308 nuclear & particles physics, Branching fraction, 0103 physical sciences, General Physics and Astronomy, Alpha decay, 010306 general physics, 01 natural sciences
Abstract: The C-12(alpha,gamma)O-16 reaction plays a central role in astrophysics, but its cross section at energies relevant for astrophysical applications is only poorly constrained by laboratory data. The reduced a width, gamma(11), of the bound 1(-) level in O-16 is particularly important to determine the cross section. The magnitude of gamma(11) is determined via sub-Coulomb a-transfer reactions or the beta-delayed a decay of N-16, but the latter approach is presently hampered by the lack of sufficiently precise data on the beta-decay branching ratios. Here we report improved branching ratios for the bound 1(-) level [b(beta,11) = (5.02 +/- 0.10) x 10(-2)] and for beta-delayed alpha emission [b(beta alpha) = (1.59 +/- 0.06) x 10(-5)]. Our value for b(beta alpha) is 33% larger than previously held, leading to a substantial increase in gamma(11). Our revised value for gamma(11) is in good agreement with the value obtained in a-transfer studies and the weighted average of the two gives a robust and precise determination of gamma(11), which provides significantly improved constraints on the C-12(alpha,gamma) cross section in the energy range relevant to hydrostatic He burning.
Published: 2018

16. Commissioning of the BRIKEN detector for the measurement of very exotic beta-delayed neutron emitters

Author: P. J. Coleman-Smith, T. T. King, B. Rubio, Shigeru Kubono, C. G. Bruno, K. P. Rykaczewski, K. Matsui, Robert Grzywacz, J. Ha, J. M. Allmond, H. Baba, J. Liu, V. H. Phong, A. I. Morales, Mark L. Prydderch, Shunji Nishimura, B. Moon, S. Bae, D. W. Stracener, A. Estrade, Giuseppe Lorusso, J. Simpson, V. F. E. Pucknell, Philip Woods, Y. Shimizu, H. Suzuki, A. Tolosa-Delgado, Y. Saito, N. T. Brewer, R. D. Page, D. Kahl, Ariel Tarifeño-Saldivia, Iris Dillmann, N. Nepal, S.L. Thomas, Toshiyuki Sumikama, Maya Takechi, Shintaro Go, F. Calviño, C. J. Griffin, N. Fukuda, R. Caballero-Folch, R. Yokoyama, C. Domingo-Pardo, M. Singh, O. Hall, H. Takeda, D. S. Ahn, M. Labiche, M. Madurga, G. G. Kiss, A. Algora, Jun Liang, Thomas Davinson, Jorge Agramunt, J. L. Tain, P. A. Söderström, Fernando Montes, Hiroyoshi Sakurai, Bertis Rasco, I.H. Lazarus, G. Cortes, L. J. Harkness-Brennan, T. Isobe, P.S. Morrall, Ministerio de Economía y Competitividad (España), Universitat Politècnica de Catalunya. Institut de Tècniques Energètiques, Universitat Politècnica de Catalunya. Departament de Física, and Universitat Politècnica de Catalunya. ANT - Advanced Nuclear Technologies Research Group
Subjects: Nuclear and High Energy Physics, Physics - Instrumentation and Detectors, Astrophysics::High Energy Astrophysical Phenomena, Nuclear Theory, Nuclear physics, Beta-delayed neutrons, FOS: Physical sciences, Analysis methodology, 01 natural sciences, Ion, Neutron and beta counters, 0103 physical sciences, Dosimetry, Neutron, 010306 general physics, Nuclear Experiment, Instrumentation, Physics, Neutrons, Energies::Energia nuclear [Àrees temàtiques de la UPC], Física [Àrees temàtiques de la UPC], 010308 nuclear & particles physics, Detector, technology, industry, and agriculture, Instrumentation and Detectors (physics.ins-det), Background Correction, biological sciences, Física nuclear, Background correction, Delayed neutron
Abstract: A new detection system has been installed at the RIKEN Nishina Center (Japan) to investigate decay properties of very neutron-rich nuclei. The setup consists of three main parts: a moderated neutron counter , a detection system sensitive to the implantation and decay of radioactive ions, and γ -ray detectors. We describe here the setup, the commissioning experiment and some selected results demonstrating its performance for the measurement of half-lives and β -delayed neutron emission probabilities. The methodology followed in the analysis of the data is described in detail. Particular emphasis is placed on the correction of the accidental neutron background.
Published: 2018
Full Text: View/download PDF

17. Conceptual design of a hybrid neutron-gamma detector for study of ß-delayed neutrons at the RIB facility of RIKEN

Author: V. F. E. Pucknell, A. Riego, G. Kiss, Stephen P. Thomas, K. P. Rykaczewski, G. Cortes, A. Tolosa, M. Labiche, Hiroyoshi Sakurai, L. J. Harkness-Brennan, J. Simpson, Berta Rubio, Giuseppe Lorusso, Ariel Tarifeño-Saldivia, Zsolt Podolyak, Iris Dillmann, R. Caballero-Folch, Shunji Nishimura, K. Miernik, C. Domingo-Pardo, A. Estrade, I.H. Lazarus, P. J. Coleman-Smith, A. Svirkhin, F. Calviño, E. Sokol, B.C. Rasco, K. Matsui, J. L. Tain, Rebecca Surman, P. H. Regan, N. T. Brewer, R. D. Page, M. Kogimtzis, Thomas Davinson, Jorge Agramunt, F. Montes, Philip Woods, V. H. Phong, A. I. Morales, Y. Saito, Robert Grzywacz, A. Algora, C. J. Griffin, Universitat Politècnica de Catalunya. Institut de Tècniques Energètiques, Universitat Politècnica de Catalunya. Departament de Física, Universitat Politècnica de Catalunya. ANT - Advanced Nuclear Technologies Research Group, and Universitat Politècnica de Catalunya. NERG - Grup de Recerca d'Enginyeria Nuclear
Subjects: Energies::Energia nuclear [Àrees temàtiques de la UPC], Neutrons, Física [Àrees temàtiques de la UPC], 010308 nuclear & particles physics, Detector, Monte Carlo method, Gamma rays, Montecarlo, Mètode de, 01 natural sciences, Neutron temperature, Particle detector, Semiconductor detector, Nuclear physics, Raigs gamma, 0103 physical sciences, Neutron detection, Neutron, 010306 general physics, Nuclear Experiment, Instrumentation, Delayed neutron, Mathematical Physics
Abstract: The conceptual design of the BRIKEN neutron detector at the radioactive ion beam factory (RIBF) of the RIKEN Nishina Center is reported. The BRIKEN setup is a complex system aimed at detecting heavy-ion implants, ß particles, ¿ rays and ß-delayed neutrons. The whole setup includes the Advanced Implantation Detection Array (AIDA), two HPGe Clover detectors and up to 166 3He-filled counters embedded in a high-density polyethylene moderator. The design is quite complex due to the large number and different types of 3He-tubes involved and the additional constraints introduced by the ancillary detectors for charged particles and ¿ rays. This article reports on a novel methodology developed for the conceptual design and optimisation of the 3He-counter array, aiming for the best possible performance in terms of neutron detection. The algorithm is based on a geometric representation of two selected detector parameters of merit, namely, the average neutron detection efficiency and the efficiency flatness as a function of a reduced number of geometric variables. The response of the neutron detector is obtained from a systematic Monte Carlo simulation implemented in GEANT4. The robustness of the algorithm allowed us to design a versatile detection system, which operated in hybrid mode includes the full neutron counter and two clover detectors for high-precision gamma spectroscopy. In addition, the system can be reconfigured into a compact mode by removing the clover detectors and re-arranging the 3He tubes in order to maximize the neutron detection performance. Both operation modes shows a rather flat and high average efficiency. In summary, we have designed a system which shows an average efficiency for hybrid mode (3He tubes + clovers) of 68.6% and 64% for neutron energies up to 1 and 5 MeV, respectively. For compact mode (only 3He tubes), the average efficiency is 75.7% and 71% for neutron energies up to 1 and 5 MeV, respectively. The performance of the BRIKEN detection system has been also quantified by means of Monte Carlo simulations with different neutron energy distributions.
Published: 2017

18. β-Decay Studies of r-Process Nuclei Using the Advanced Implantation Detector Array (AIDA)

Author: G. G. Kiss, K. Matsui, Giuseppe Lorusso, I. Burrows, S. Rinta-Antila, V. F. E. Pucknell, L. J. Harkness-Brennan, P. J. Coleman-Smith, D. Braga, Zhi Liu, J. Simpson, S. Nishimura, Oliver J. Roberts, R. D. Page, Alfredo Estrade, D. Seddon, S.L. Thomas, C. J. Griffin, T. Grahn, Mark L. Prydderch, S. C. Letts, Philip Woods, Thomas Davinson, Alec Grant, I.H. Lazarus, V. H. Phong, and M. Kogimtzis
Subjects: Physics, Optics, 010308 nuclear & particles physics, business.industry, 0103 physical sciences, r-process, Detector array, 010306 general physics, business, 01 natural sciences
Published: 2017

19. Fast timing measurement using an labr3(Ce) scintillator detector array coupled with gammasphere

Author: Alec Grant, T. Kröll, V. F. E. Pucknell, I. Burrows, J. T. Anderson, G. Fernández Martínez, S. Bottoni, T. Daniel, F. G. Kondev, R. Ilieva, S. Zhu, V. Vedia, A. D. Ayangeakaa, E. A. Stefanova, T. Lauritsen, D. Seweryniak, Gavin Lotay, M. Rudigier, John P. Greene, I.H. Lazarus, S. Lalkovski, E.R. Gamba, P. H. Regan, R. V. F. Janssens, M. Smolen, C. M. Shand, D. J. Hartley, J. Sethi, M. P. Carpenter, Gregory Lane, D. M. Cullen, L.A. Guegi, T. Berry, P. Copp, J. Rohrer, Raymond J. Carroll, O. Yordanov, M. Carmona Gallardo, Jayne Simpson, Alison Bruce, Zs. Podolyák, Matthew Reed, S. Ilieva, and L. M. Fraile
Subjects: Physics, Fission products, 010308 nuclear & particles physics, Fission, General Physics and Astronomy, Radiation, Nanosecond, Scintillator, 01 natural sciences, Nuclear physics, Data acquisition, Picosecond, 0103 physical sciences, Gammasphere, Física nuclear, 010306 general physics
Abstract: A fast-timing experiment was performed at the Argonne National Laboratory in December 2015 and January 2016, measuring decay radiation of fission products from a Cf-252 fission source. Details of the set-up, integration with Digital Gammasphere, and the data acquisition system are presented. The timing performance of the set-up, capable of measuring lifetimes from the nanosecond region down to tens of picoseconds, is discussed. First preliminary results from the fast-timing analysis of the fission fragment data are presented.
Published: 2017
Full Text: View/download PDF

20. Commissioning of the BRIKEN beta-delayed neutron detector for the study of exotic neutron-rich nuclei

Author: Shigeru Kubono, A. Riego, Shunji Nishimura, G. Lorusso, G. Cortes, K. P. Rykaczewski, C. Domingo-Pardo, Shintaro Go, L. J. Harkness-Brennan, Philip Woods, Zsolt Podolyak, N. Fukuda, James Simpson, A. Estrade, F. Montes, S. Bae, H. Takeda, D. S. Ahn, Robert Grzywacz, N. Nepal, A. Tolosa-Delgado, J. Ha, Gabor Kiss, J. L. Tain, R. Caballero Folch, B. Rubio, Maya Takechi, V. H. Phong, T. Isobe, J. Agramunt, D. Kahl, B. Moon, Ariel Tarifeño-Saldivia, M. Labiche, P. J. Coleman-Smith, Iris Dillmann, N. T. Brewer, O. Hall, Hiroyoshi Sakurai, A.I. Morales, JJ Liu, Jenny Lee, V. F. E. Pucknell, H. Suzuki, P. A. Söderström, I.H. Lazarus, S.L. Thomas, Robert Page, Y. Shimizu, Toshiyuki Sumikama, P. H. Regan, Alejandro Algora, C. J. Griffin, M. Kogimtzis, Thomas Davinson, D. W. Stracener, K. Matsui, K. Miernik, B.C. Rasco, H. Baba, F. Calviño, Y. Saito, Universitat Politècnica de Catalunya. Departament de Física, Universitat Politècnica de Catalunya. Institut de Tècniques Energètiques, and Universitat Politècnica de Catalunya. ANT - Advanced Nuclear Technologies Research Group
Subjects: Astrofísica, Neutron emission, QC1-999, Astrophysics::High Energy Astrophysical Phenomena, Neutron detector, Nuclear Theory, Electron, Neutron, Astrophysics, 01 natural sciences, Nuclear physics, 0103 physical sciences, Neutron detection, 010306 general physics, Nuclear Experiment, Delayed neutrons, Physics, Energies::Energia nuclear [Àrees temàtiques de la UPC], Neutrons, Física [Àrees temàtiques de la UPC], 010308 nuclear & particles physics, Nuclear structure, Detector, Neutron capture, Delayed neutron, Radioactive decay
Abstract: Beta-delayed neutron emission (Beta-n) is a form of radioactive decay in which an electron, an anti-neutrino and one or more neutrons are emitted. This process arises if the energy window of the decay Q_Beta is greater than the neutron separation energy S n of the daughter. The probability in each decay of emitting neutrons is called the Pn value. This form of decay plays a key role in the synthesis of chemical elements in the Universe via the rapid neutron capture process, or r-process. The r-process proceeds far from the valley of nuclear stability, and leads to very neutron-rich nuclei that then decay to the line of stability. Most of these nuclei are ßn emitters. The initial abundance distribution is shaped by the decay half-life T1/2, but the neutron emission affects the final abundances in two ways: on the one hand it shifts the decay path to lower masses and on the other hand it provides a source of neutrons for late captures that will shift it in the opposite way. Thus, a good knowledge of Pn and T1/2 values of the nuclei between the line of stability and the r-process path is needed for a correct understanding of the observed abundances. Besides the astrophysical interest, the measurement of new Pn values and half-lives is also useful for refining nuclear structure models, constraining parameters of the models and testing ß-strength functions [3]. Our current understanding of the process of ß-delayed multiple neutron emission, as well as the competition between different open channels (gamma, one-neutron, two-neutron, etc), is incomplete because of the scarcity of experimental data. With these ideas in mind, the BRIKEN (Beta-delayed-neutron-measurements at RIKEN) collaboration was established, with the aim of greatly improving the quantity and quality of data the decays of very neutron-rich nuclei close to the r-process path.
Published: 2017

21. Beta-delayed proton emission from 20Mg

Author: C. Sotty, Miguel Madurga, A. Negret, R. Wadsworth, Björn Jonson, M. Munch, S. Pascu, R. Mărginean, M. Stanoiu, M. V. Lund, L. J. Harkness-Brennan, Andrei Andreyev, I.H. Lazarus, P. Rahkila, R. Lica, Simon Lindberg, A. Turturica, R. D. Page, N. Marginean, Joonas Konki, P. Van Duppen, H. O. U. Fynbo, Ángel Perea, Olof Tengblad, María José García Borge, Oliver S. Kirsebom, V. Vedia, Marc Huyse, A. M. Howard, K. Riisager, Joakim Cederkäll, C. Mihai, E. Rapisarda, V. F. E. Pucknell, H. De Witte, Thomas Nilsson, Enrique Nácher, N. Warr, J. Kurcewicz, Paul Greenlees, I. Marroquin, L. M. Fraile, D. S. Judson, F. Rotaru, European Commission, Science and Technology Facilities Council (UK), Federal Ministry of Education and Research (Germany), European Organization for Nuclear Research, Ministerio de Economía y Competitividad (España), and Danish Natural Science Research Council
Subjects: Physics, Nuclear and High Energy Physics, Decay scheme, Large Hadron Collider, Proton, 010308 nuclear & particles physics, Hadron, Resonance, 01 natural sciences, Beta decay, Nuclear physics, 0103 physical sciences, Nuclear fusion, Atomic physics, Proton emission, Nuclear Experiment, 010306 general physics
Abstract: M. V. et al. ; 14 págs.; 10 figs.; 6 tabs., Beta-delayed proton emission from Mg has been measured at ISOLDE, CERN, with the ISOLDE Decay Station (IDS) setup including both charged-particle and gamma-ray detection capabilities. A total of 27 delayed proton branches were measured including seven so far unobserved. An updated decay scheme, including three new resonances above the proton separation energy in Na and more precise resonance energies, is presented. Beta-decay feeding to two resonances above the Isobaric Analogue State (IAS) in Na is observed. This may allow studies of the 4032.9(2.4)keV resonance in Ne through the beta decay of Mg, which is important for the astrophysically relevant reaction O(α,γ)Ne. Beta-delayed protons were used to obtain a more precise value for the half-life of Mg, 91.4(1.0)ms. © SIF, Springer-Verlag Berlin Heidelberg, 2016, This work has been supported by the European Commision within the Seventh Framework Programme “European Nuclear Science and Applications Research”, contract no. 262010 (ENSAR), by the Spanish research agency under number FPA2012- 32443, FPA2015-64969-P and FPA2015-65035-P and by the Romanian IFA Grant CERN/ISOLDE. The authors also acknowledge the support of the Danish Natural Science Research Council, the United Kingdom Science and Technology Facilities Council, the German BMBF under grants 05P12PKFNE and 05P15PKCIA and the German Verbundprojekt 05P20015- ISOLDE
Published: 2016

22. Conceptual design and infrastructure for the installation of the first AGATA sub-array at LNL

Author: A. Triossi, D. Conventi, A. M. Stefanini, G. Montagnoli, D. Lersch, D. Bazzacco, S. Aydin, John Paul Strachan, B. Bruyneel, C. He, Agnese Giaz, S. Brambilla, S. Fantinel, Enrico Calore, E. Sahin, A. Bracco, B. Million, S. M. Lenzi, R. Peghin, A. Gottardo, L. Berti, G. Maron, Alessandro Zucchiatti, B. Birkenbach, E. Fioretto, Gheorghe Pascovici, V. Vandone, C. Fanin, M. Bellato, E. Legay, N. Blasi, J. Grebosz, F. Zocca, A. Gadea, E. Bissiato, C. A. Ur, O. Stezowski, Roberto Menegazzo, D. Mengoni, Alberto Pullia, E. Farnea, P.M. Jones, Joël Chavas, Roberto Isocrate, M. Nicoletto, Damiano Bortolato, N. Dosme, P. Reiter, G. Rampazzo, A. Corsi, S. Badoer, S. Coelli, Herbert Hess, R. Beunard, Francesco Lelli, F. Recchia, A. Cortesi, M. Ozille, F. C. L. Crespi, Th. Pissulla, J. Jolie, A. Colombo, J. Eberth, G. Salvato, D. R. Napoli, T. Habermann, E. Grodner, C. Boiano, Ch. Fransen, L. Costa, A. Austin, C. Veyssiere, Fernando Scarlassara, F. Tomasi, P. Cocconi, R. Nicolini, N. Toniolo, S. Leoni, A. Dewald, R. Venturelli, R. Griffiths, C. Michelagnoli, L. Corradi, D. Rosso, V. F. E. Pucknell, E. Viscione, F. Veronese, Stefano Riboldi, A. Capsoni, C. Rossi Alvarez, Oliver Wieland, J. Simpson, X. Grave, S. Lunardi, M. Turcato, D. Montanari, G. de Angelis, M. Pignanelli, G. Benzoni, P. Molini, A. Latina, M. Rigato, W. Rother, L. Ramina, F. Camera, J. J. Valiente-Dobón, M. Rebeschini, Andreas Wiens, O. Möller, M. Gulmini, Research Group: Information Management, Grand Accélérateur National d'Ions Lourds (GANIL), Centre National de la Recherche Scientifique (CNRS)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3), Centre de Spectrométrie Nucléaire et de Spectrométrie de Masse (CSNSM), Centre National de la Recherche Scientifique (CNRS)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Paris-Sud - Paris 11 (UP11), Institut de Physique Nucléaire d'Orsay (IPNO), Institut de Physique Nucléaire de Lyon (IPNL), Centre National de la Recherche Scientifique (CNRS)-Université Claude Bernard Lyon 1 (UCBL), Université de Lyon-Université de Lyon-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3), Institut de Recherches sur les lois Fondamentales de l'Univers (IRFU), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université Paris-Saclay, AGATA, Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), Université Paris-Sud - Paris 11 (UP11)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), Université Claude Bernard Lyon 1 (UCBL), Université de Lyon-Université de Lyon-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), Sabire Yazıcı Fen-Edebiyat Fakültesi, Triossi, Andrea -- 0000-0001-5140-9154, Montanari, Daniele -- 0000-0002-1980-7686, Gadea, Andres -- 0000-0002-4233-1970, Calore, Enrico -- 0000-0002-2301-3838, Napoli, Daniel Ricardo -- 0000-0002-8154-6958, Menegazzo, Roberto -- 0000-0002-3060-5276, Zucchiatti, Alessandro -- 0000-0002-3647-596X, Sahin, Eda -- 0000-0003-0683-5140, Jones, Pete -- 0000-0001-7480-6603, benzoni, giovanna -- 0000-0002-7938-0338, GOTTARDO, Andrea -- 0000-0002-0390-5767, Montagnoli, Giovanna -- 0000-0002-8944-1456, Recchia, Francesco -- 0000-0002-8428-0112, GIAZ, Agnese -- 0000-0002-2550-450X, Pullia, Alberto -- 0000-0002-6393-747X, Scarlassara, Fernando -- 0000-0002-4663-8216, Nicoletto, Marino -- 0000-0001-9301-0782, Lelli, Francesco -- 0000-0003-1900-9171, and Camera, Franco -- 0000-0003-1731-4834
Subjects: Nuclear and High Energy Physics, DANTE Heavy-ion Detector, Physics::Instrumentation and Detectors, HELENA multiplicity filter, 01 natural sciences, 7. Clean energy, Particle detector, Nuclear physics, PRISMA spectrometer, Conceptual design, 0103 physical sciences, [PHYS.PHYS.PHYS-INS-DET]Physics [physics]/Physics [physics]/Instrumentation and Detectors [physics.ins-det], Nuclear Experiment, 010306 general physics, Gamma detection, Instrumentation, TRACE SI detector, Physics, Spectrometer, 010308 nuclear & particles physics, business.industry, Semiconductor detector, Cologne plunger, AGATA, DANTE heavy-ion-detector, business, Computer hardware
Abstract: WOS: 000295765100014, The first implementation of the AGATA spectrometer consisting of five triple germanium detector clusters has been installed at Laboratori Nazionali di Legnaro, INFN. This setup has two major goals, the first one is to validate the gamma-tracking concept and the second is to perform an experimental physics program using the stable beams delivered by the Tandem-PIAVE-ALPI accelerator complex. A large variety of physics topics will be addressed during this campaign, aiming to investigate both neutron and proton-rich nuclei. The setup has been designed to be coupled with the large-acceptance magnetic-spectrometer PRISMA. Therefore, the in-beam prompt gamma rays detected with AGATA will be measured in coincidence with the products of multinucleon-transfer and deep-inelastic reactions measured by PRISMA. Moreover, the setup is versatile enough to host ancillary detectors, including the heavy-ion detector DANTE, the gamma-ray detector array HELENA, the Cologne plunger for lifetime measurements and the Si-pad telescope TRACE. In this paper the design; characteristics and performance figures of the setup will be described.
Published: 2011

23. Compton imaging with the PorGamRays spectrometer

Author: P. J. Coleman-Smith, A. Sweeney, J. Simpson, Paul Seller, A. J. Boston, P. J. Nolan, A. L. Hardie, M. Slee, Susan Rigby, L. J. Harkness, L. Jones, V. F. E. Pucknell, D.P. Scraggs, D. M. Cullen, D. S. Judson, M. Jones, and I.H. Lazarus
Subjects: Physics, Nuclear and High Energy Physics, Pixel, Spectrometer, Scattering, business.industry, Detector, ComputingMethodologies_IMAGEPROCESSINGANDCOMPUTERVISION, Cadmium zinc telluride, chemistry.chemical_compound, Optics, Stack (abstract data type), chemistry, Application-specific integrated circuit, Telluride, business, Instrumentation
Abstract: The PorGamRays project aims to develop a portable gamma-ray detection system with both spectroscopic and imaging capabilities. The system is designed around a stack of thin Cadmium Zinc Telluride (CZT) detectors. The imaging capability utilises the Compton camera principle. Each detector is segmented into 100 pixels which are read out through custom designed Application Specific Integrated Circuits (ASICs). This device has potential applications in the security, decommissioning and medical fields. This work focuses on the near-field imaging performance of a lab-based demonstrator consisting of two pixelated CZT detectors, each of which is bonded to a NUCAM II ASIC. Measurements have been made with point 133Ba and 57Co sources located ∼ 35 mm from the surface of the scattering detector. Position resolution of ∼ 20 mm FWHM in the x and y planes is demonstrated.
Published: 2011

24. The BRIKEN Project: Extensive Measurements of $\beta $-delayed Neutron Emitters for the Astrophysical r Process

Author: H. Baba, P. J. Woods, Shigeru Kubono, J. Agramunt, Iris Dillmann, L. J. Harkness-Brennan, B. Rubio, A.I. Morales, R. Caballero Folch, B. Moon, D. W. Stracener, S.L. Thomas, Toshiyuki Sumikama, Rebecca Surman, Shunji Nishimura, A. Riego, G. Lorusso, M. Labiche, A. Estrade, M. Karny, T. Davinson, N. Nepal, Y. Saito, C. Domingo-Pardo, A. Korgul, K. Miernik, H. Takeda, J. L. Tain, F. Montes, Gabor Kiss, D. S. Ahn, P. J. Coleman-Smith, H. Suzuki, Maya Takechi, T. Isobe, O. Hall, Jenny Lee, F. Calviño, Zs. Podolyák, K. Matsui, Ariel Tarifeño-Saldivia, Hiroyoshi Sakurai, J. M. Allmond, D. Kahl, R. D. Page, M. Kogimtzis, A. Tolosa-Delgado, Alejandro Algora, I.H. Lazarus, P. A. Söderström, B.C. Rasco, J. Ha, N. Fukuda, S. Go, P. H. Regan, JJ Liu, V. F. E. Pucknell, Y. Shimizu, K. P. Rykaczewski, James Simpson, V. H. Phong, C. J. Griffin, Robert Grzywacz, G. Cortes, N.T. Brewer, S. Bae, Universitat Politècnica de Catalunya. Departament de Física, Universitat Politècnica de Catalunya. Institut de Tècniques Energètiques, and Universitat Politècnica de Catalunya. ANT - Advanced Nuclear Technologies Research Group
Subjects: Astrofísica, Delayed neutron, Neutron emission, Astrophysics::High Energy Astrophysical Phenomena, Nuclear data, Nuclear Theory, Measure (physics), General Physics and Astronomy, Neutron, Astrophysics, 01 natural sciences, Nuclear physics, 0103 physical sciences, Nuclear Experiment, 010306 general physics, Energies::Energia nuclear [Àrees temàtiques de la UPC], Neutrons, Physics, Física [Àrees temàtiques de la UPC], 010308 nuclear & particles physics, Neutron capture, Física::Astronomia i astrofísica [Àrees temàtiques de la UPC], r-process
Abstract: An ambitious program to measure decay properties, primarily β-delayed neutron emission probabilities and half-lives, for a significant number of nuclei near or on the path of the rapid neutron capture process, has been launched at the RIKEN Nishina Center. We give here an overview of the status of the project.
Published: 2018

25. BETA-DECAY STUDIES OF R-PROCESS NUCLEI USING THE ADVANCED IMPLANTATION DETECTOR ARRAY

Author: Shunji Nishimura, P. J. Woods, Alfredo Estrade, T. Davinson, Tuomas Grahn, I.H. Lazarus, K. Matsui, Zhengtai Liu, P. J. Coleman-Smith, L. J. Harkness-Brennan, Mark L. Prydderch, Giuseppe Lorusso, John Paul Strachan, D. Seddon, V. F. E. Pucknell, Alec Grant, Robert Page, S. C. Letts, C. J. Griffin, D Braga, Ian Burrows, Simon Thomas, John Simpson, Sami Rinta-Antila, Oliver J Roberts, and M. Kogimtzis
Subjects: Physics, Nuclear physics, r-process, Detector array, Beta decay
Published: 2015

26. Rare ISotopes INvestigation at GSI (RISING) using gamma-ray spectroscopy at relativistic energies

Author: H. Weick, A. Brünle, W. Me¸czyński, Claes Fahlander, G. Benzoni, H. Schaffner, J. Devin, P. Reiter, T. Saito, V. F. E. Pucknell, Oliver Wieland, R. Bassini, J. Gerl, C. Boiano, W. Prokopowicz, J. Leske, J. Gre¸bosz, F. Becker, T. Beck, Margareta Hellström, S.K. Mandal, R Lozeva, D. Curien, J. Simpson, I.H. Lazarus, H. J. Wollersheim, P. Bednarczyk, G Hammond, I. Kojouharov, P. J. Nolan, M. Zie¸bliński, H. Grawe, N. Kurz, A. Bracco, D. Seddon, Gerda Neyens, H. Hübel, C. Wheldon, U. Bonnes, P. A. Butler, M. Górska, P. Doornenbal, K. Burkard, S. Brambilla, D. E. Appelbe, F. Camera, J. Li, Dirk Rudolph, Khalid Fayz, M. Kmiecik, S. Muralithar, K.-H. Speidel, K. Sümmerer, R. Kulessa, Manfred Mutterer, Hans Geissel, M. Winkler, J. Jolie, A. Banu, N. Warr, K.-H. Behr, Benedicte Million, R. Griffiths, A. Bürger, M. A. Bentley, G. Münzenberg, J. Styczen, A. Maj, Norio Saito, J.V. Kalben, Johan Nyberg, J. Hoffmann, Institut de Recherches Subatomiques (IReS), Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Cancéropôle du Grand Est-Université Louis Pasteur - Strasbourg I-Centre National de la Recherche Scientifique (CNRS), and EUROBALL
Subjects: Nuclear and High Energy Physics, Photon, Physics::Instrumentation and Detectors, Fission, Nuclear Theory, Projectile excitation, Coulomb excitation, [PHYS.NEXP]Physics [physics]/Nuclear Experiment [nucl-ex], 13.40.Hq, 13.40.-f, 25.60.-t, 25.70.Mn, 25.75.-q, 29.30.Kv, 01 natural sciences, Nuclear physics, 0103 physical sciences, Fragmentation reaction, Gamma spectroscopy, Nuclear Experiment, 010306 general physics, Spectroscopy, Instrumentation, $\gamma$-ray spectroscopy, Physics, 010308 nuclear & particles physics, Projectile, Gamma ray, Nuclear structure, Electromagnetic interaction, Relativistic heavy-ion beams, Physics::Accelerator Physics, Atomic physics, Radioactive beams
Abstract: The Rare ISotopes INvestigation at GSI project combines the former EUROBALL Ge-Cluster detectors, the MINIBALL Ge detectors, BaF2--HECTOR detectors, and the fragment separator at GSI for high-resolution in-beam gamma-ray spectroscopy measurements with radioactive beams. These secondary beams produced at relativistic energies are used for Coulomb excitation or secondary fragmentation experiments in order to explore the nuclear structure of the projectiles or projectile like nuclei by measuring de-excitation photons. The newly designed detector array is described and the performance characteristics are given. Moreover, particularities of the experimental technique are discussed.
Published: 2005

27. β decay studies of n-rich Cs isotopes with the ISOLDE Decay Station

Author: S. Ceruti, J.-M. Régis, A. I. Morales, H. De Witte, T. Kröll, A. Negret, A Orduz, J. Creswell, Ulli Köster, Joonas Konki, V. Charviakova, N. Blasi, M. V. Lund, F. Rotaru, I.H. Lazarus, M. Stanoiu, G. Fernández-Martínez, J. Kurcewicz, S. Leoni, H. O. U. Fynbo, N. Marginean, Panu Rahkila, F. C. L. Crespi, Olof Tengblad, V. Karayonchev, C. Sotty, Paul Greenlees, R. Lica, V. Vedia, S. Pascu, N. Cieplicka-Oryńczak, Marc Huyse, Henryk Mach, R. Mărginean, R. E. Mihai, M Thuerauf, C. Mihai, J. Jolie, María José García Borge, A. Bracco, L. M. Fraile, J. Benito, N Saed-Sami, F. Camera, T. Kurtukian-Nieto, Miguel Madurga, P. Van Duppen, G. Benzoni, C. Costache, V. F. E. Pucknell, N. Warr, T Berry, V. Sánchez-Tembleque, Z. Patyk, A. Turturica, I. Homm, Ministerio de Economía y Competitividad (España), Belgian Science Policy Office, Federal Ministry of Education and Research (Germany), SCOAP, National Science Centre (Poland), Istituto Nazionale di Fisica Nucleare, European Commission, Institut Laue-Langevin (ILL), ILL, Centre d'Etudes Nucléaires de Bordeaux Gradignan (CENBG), and Université Sciences et Technologies - Bordeaux 1-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS)
Subjects: Nuclear and High Energy Physics, NEUTRON-RICH, nuclear deformation, Isotopes of germanium, β decay, MASS, [PHYS.NEXP]Physics [physics]/Nuclear Experiment [nucl-ex], 7. Clean energy, 01 natural sciences, ISOLDE, BA-148, Nuclear physics, LA-148, 0103 physical sciences, Nuclear Physics - Experiment, BAND-STRUCTURES, Nuclear Experiment, 010306 general physics, Physics, Decay scheme, NUCLEI, Isotope, 010308 nuclear & particles physics, BEAMS, Beta decay, 3. Good health, exotic nuclei, PICOSECOND LIFETIME MEASUREMENTS, beta decay, Atomic physics, Nuclear deformation, ISOLDE, Exotic nuclei
Abstract: R. Lica et al. -- 14 pags., 7 figs., tab. -- Open Access funded by Creative Commons Atribution Licence 3.0, Neutron-rich Ba isotopes are expected to exhibit octupolar correlations, reaching their maximum in isotopes around mass A = 146. The odd-A neutron-rich members of this isotopic chain show typical patterns related to non-axially symmetric shapes, which are however less marked compared to even-A ones, pointing to a major contribution from vibrations. In the present paper we present results from a recent study focused on Cs β-decay performed at the ISOLDE Decay Station equipped with fast-timing detectors. A detailed analysis of the measured decay half-lives and decay scheme of Ba is presented, giving a first insight in the structure of this neutron-rich nucleus., The IDS collaboration acknowledges financial support from: Istituto Nazionale di Fisica Nucleare, the Italian ‘Programmi di Ricerca Scientifica di Rilevante Interesse Nazionale (PRIN)’ contract number 2001024324 01302, the European Union’s seventh framework through ENSAR, contract no. 262010, the European Unions Horizon 2020 Framework research and innovation programme under grant agreement no. 654002 (ENSAR2), the FATIMA-NuPNET network via the PRI-PIMNUP-2011-1338 project, the Spanish MINECO projects reference numbers FPA2013-41467-P and FPA2015-646969-P, the German BMBF under contract 05P15PKCIA and ‘Verbundprojekt 05P2015’, the FWO-Vlaanderen (Belgium) and the IAP Belgian Science Policy (BriX network P7/12). VCh and ZP acknowledge support by the polish grant of Narodowe Centrum Nauki nr 2015/18/M/ST2/00523.
Published: 2017

28. The SAGE spectrometer

Author: J.R. Cresswell, V. F. E. Pucknell, Paul Greenlees, Robert Page, P. J. Coleman-Smith, Joonas Konki, Daniel Cox, J. Sorri, J. Thornhill, Philippos Papadakis, A. K. Mistry, Panu Rahkila, S. C. Letts, D. Wells, J. Simpson, Rauno Julin, I.H. Lazarus, J.A. Sampson, Janne Pakarinen, Mikael Sandzelius, P. A. Butler, D. Seddon, R.-D. Herzberg, E. Parr, and Peter M. Jones
Subjects: Physics, Nuclear and High Energy Physics, Electron spectrometer, Spectrometer, Physics::Instrumentation and Detectors, Astrophysics::High Energy Astrophysical Phenomena, Hadron, Nuclear structure, Electron, Nuclear physics, Internal conversion, Excited state, Nuclear fusion, Atomic physics, Nuclear Experiment
Abstract: The SAGE spectrometer has been constructed for in-beam nuclear structure studies. SAGE combines a Ge-detector array and an electron spectrometer for detection of $ \gamma$ -rays and internal conversion electrons, respectively, and allows simultaneous observation of both electrons and $ \gamma$ -rays emitted from excited nuclei. SAGE is set up in the Accelerator Laboratory of the University of Jyvaskyla and works in conjunction with the RITU gas-filled recoil separator and the GREAT focal-plane spectrometer allowing the use of the recoil-decay tagging method.
Published: 2014

29. 12C+12Cand16O+8Bedecay of24Mgstates excited in the12C(16O,24Mg)αreaction

Author: D. L. Watson, A. St. J. Murphy, J. T. Murgatroyd, Martin Freer, W. N. Catford, S. P. G. Chappell, B.R. Fulton, R. L. Cowin, N. M. Clarke, G. K. Dillon, M. Shawcross, N. Curtis, and V. F. E. Pucknell
Subjects: Physics, Nuclear and High Energy Physics, Crystallography, education.field_of_study, Scattering, Excited state, Population, Context (language use), Nuclear Experiment, education
Abstract: The population and decay of excited states in ${}^{24}\mathrm{Mg}$ has been investigated through the ${}^{12}{\mathrm{C}(}^{16}{\mathrm{O},}^{12}{\mathrm{C}}^{12}\mathrm{C})\ensuremath{\alpha}$ and ${}^{12}{\mathrm{C}(}^{16}{\mathrm{O},}^{8}{\mathrm{Be}}^{16}\mathrm{O})\mathrm{\ensuremath{\alpha}}$ reactions, at beam energies of 75, 85, and 115 MeV. The fragments from the breakup of the ${}^{24}\mathrm{Mg}$ nucleus were detected in coincidence, permitting a study of both the excitation energies and the spins of the fissioning states. These measurements indicate a series of states in ${}^{24}\mathrm{Mg}$ between 20 and 40 MeV with spins ranging from $J=4$ to 14 $\ensuremath{\Elzxh}$. The results are discussed in the context of the ${}^{12}{\mathrm{C}+}^{12}\mathrm{C}$ quasimolecular scattering resonances and other ${}^{24}\mathrm{Mg}$ breakup reactions.
Published: 1998

30. Transmission Efficiency of the SAGE Spectrometer Using GEANT4

Author: F. A. Ali, P. A. Butler, V. F. E. Pucknell, Jayne Simpson, D. Seddon, A. K. Mistry, J.R. Cresswell, Panu Rahkila, J. Thornhill, Rauno Julin, P. J. Coleman-Smith, J. Sorri, D. Wells, M. Sandzelius, Philippos Papadakis, S. C. Letts, Paul Greenlees, Daniel Cox, J. Konki, I.H. Lazarus, J.A. Sampson, Janne Pakarinen, and Rolf-Dietmar Herzberg
Subjects: Materials science, Spectrometer, Silicon, ta114, Physics::Instrumentation and Detectors, 010308 nuclear & particles physics, business.industry, SAGE, Detector, chemistry.chemical_element, Germanium, Electron, 01 natural sciences, 3. Good health, Electron transmission, chemistry, Transmission (telecommunications), 0103 physical sciences, Optoelectronics, Computer Science::Symbolic Computation, Nuclear Experiment, 010306 general physics, business
Abstract: The new SAGE spectrometer allows simultaneous electron and γ-ray in-beam studies of heavy nuclei. A comprehensive GEANT4 simulation suite has been created for the SAGE spectrometer. This includes both the silicon detectors for electron detection and the germanium detectors for γ-ray detection. The simulation can be used for a wide variety of tests with the aim of better understanding the behaviour of SAGE. A number of aspects of electron transmission are presented here.
Published: 2013
Full Text: View/download PDF

31. A 128-channel event driven readout ASIC for the R3B tracker

Author: I.H. Lazarus, M. Borri, Mark L. Prydderch, M. Kogimtzis, Steven Bell, Q. Morrissey, V. F. E. Pucknell, J. Thornhill, I. Church, L. Jones, and M. Labiche
Subjects: Physics, Physics::Instrumentation and Detectors, 010308 nuclear & particles physics, business.industry, Detector, Stereoscopy, STRIPS, 01 natural sciences, Particle detector, law.invention, Optics, Application-specific integrated circuit, law, 0103 physical sciences, Measuring instrument, 010306 general physics, business, Instrumentation, Mathematical Physics
Abstract: R3B is a detector with high efficiency, acceptance, and resolution for kinematically complete measurements of reactions with high-energy radioactive beams. Detectors track and identify radioactive beams into and out of a reaction target. Three layers of double-sided stereoscopic silicon strips form the tracker detector which must provide precise tracking and vertex determination and in addition include energy and multiplicity measurements. The R3B ASIC has been manufactured and is intended for processing and digitising signals generated by ionising particles passing through the tracker. The ASIC processes signals and provides spatial, energy and time measurements.
Published: 2016

32. First excited12+state in9B

Author: B. R. Fulton, N. I. Ashwood, D. Groombridge, N. M. Clarke, S. P. Fox, V. F. E. Pucknell, C. N. Timis, V. A. Ziman, David Weisser, N. Curtis, W. N. Catford, D. L. Watson, T. A. D. Brown, D. Mahboub, and T. D. Baldwin
Subjects: Physics, Nuclear and High Energy Physics, Excited state, State (functional analysis), Atomic physics
Abstract: Evidence has been found for a broad unbound state near 1 MeV excitation in ${}^{9}$B that is a candidate for the long-disputed ${\frac{1}{2}}^{+}$ mirror of the unbound 1.68 MeV state in ${}^{9}$Be. Reactions of ${}^{6}$Li${+}^{6}$Li were studied with a 60 MeV beam incident on a 240 $\ensuremath{\mu}$g/cm${}^{2}$ ${}^{6}$LiF target. The breakup fragments from the decay of the reaction products were detected in five Si-Si-CsI telescope detectors and the breakup particles were reconstructed using the technique of resonant particle spectroscopy. It is shown that contrary to a previous study, the ${\frac{1}{2}}^{+}$ is not populated in the reaction ${}^{6}$Li(${}^{6}$Li,$t$)${}^{9}$B, but that it is populated via the ${}^{6}$Li(${}^{6}$Li,$d$)${}^{10}$B reaction. The sequential decays of ${}^{10}$B populated the channels ${}^{6}$Li(g.s.)$+\ensuremath{\alpha}$, ${}^{6}$Li(2.186 MeV)$+\ensuremath{\alpha}$, ${}^{8}$Be$+d$, and $pn\ensuremath{\alpha}\ensuremath{\alpha}$, with the latter including (${}^{9}$B$+n$ or ${}^{9}$Be$+p$) decay from ${}^{10}$B. Decays through ${}^{9}$B are identified and show the presence of the ${\frac{1}{2}}^{+}$ state as a broad asymmetric peak around 0.8--1.0 MeV with $\ensuremath{\Gamma}\ensuremath{\approx}1.5$ MeV.
Published: 2012

33. AGATA-Advanced GAmma Tracking Array

Author: A. Colombo, Y. Mariette, A. Johnson, W. Korten, A. Brondi, T. Faul, J. Robin, R. Depalo, M. Slee, J. Gre¸bosz, H. C. Boston, H. Harroch, B. Rossé, M. Filliger, M. Gulmini, A. Korichi, S. Brambilla, J.R. Cresswell, C. Parisel, P. Edelbruck, F. Ameil, F. Camera, C. Oziol, Matthew Richard Dimmock, G. Salvato, F. Morbiducci, J. Ropert, M. Borsato, E. Legay, Marco Bellato, C. Santos, Gheorghe Pascovici, L. Charles, J. Pancin, G. Casati, P. G. Bizzeti, T. Stanios, S. Lhenoret, Diego Barrientos, P.M. Jones, Andreas Görgen, V. Chambert, S. Aydin, K. Hauschild, B. Hervieu, R. Nicolini, J. Simpson, H. J. Wollersheim, L. Lavergne, Pär-Anders Söderström, G. S. Simpson, G. Jaworski, F. Filmer, R. Griffiths, P.S. Morrall, M. Petcu, G. Lo Bianco, D. Linget, A. Givechev, D. C. Oxley, M. Kogimtzis, F. Salomon, J. Jolie, D. Wells, S. Moon, C. Aufranc, A. Corsi, T. Descombes, N. Goel, J. Thornhill, N. Warr, Serkan Akkoyun, B. Birkenbach, F. Dorangeville, Joël Chavas, P. Medina, Roberto Isocrate, C. Weber, E. Merchan, Bo Cederwall, I. Kojouharov, Enrique Sanchis, A. Lopez-Martens, Oliver Wieland, F. Le Blanc, D. Seddon, S. C. Letts, D. Bazzacco, J. Leske, B. Bruyneel, Alberto Pullia, L. Nelson, G. La Rana, B. Travers, I. Burrows, G. Maron, S. Coelli, J. J. Valiente-Dobón, F. Saillant, Piotr Bednarczyk, V.L. Ngo, J. Mierzejewski, Norbert Pietralla, R.S. Kempley, N. Kurz, M. Rebeschini, S. Fantinel, D. L. Balabanski, A. J. Boston, F. Tomasi, R. Berthier, M. D. Salsac, B. Dulny, C. Stahl, N. Dosme, C. Fanin, R. Baumann, S. Pietri, A. Astier, M. Nicoletto, J. van der Marel, A. Bracco, Björn Jonson, D. Mengoni, D. Bloor, Luna Pellegri, F. Lefebvre, D. Pugnére, J. Egea, S. Cabaret, D. Curien, M. Reese, C. Commeaux, Dirk Rudolph, A. Giannatiempo, F. Recchia, L. Ramina, A. Lermitage, C. A. Ur, R. M. Lieder, I.P. Brawn, R. Menegazzo, R. Raine, Krasimir Mitev, D. R. Napoli, G. Suliman, M. Kebbiri, Y. Drouen, Susan Rigby, W. Me¸czyński, R. Wadsworth, F. Didierjean, P. Desesquelles, Ch. Veyssiere, S. Leoni, Vicente González, P. Gros, Y. Le Noa, M. Castoldi, O. Möller, R. Orlandi, Thomas Beck, M. Şenyiğit, A. Jungclaus, L. Gibelin, Mohammed Kaci, Zs. Podolyák, J. Gerl, S. Erturk, W. Gast, B. Melon, V. Mendéz, R. Peghin, P. Molini, M. N. Erduran, D. Conventi, Pankaj S. Joshi, E. Clément, F.A. Beck, A. Austin, A. Cortesi, J. Palin, P. Cocconi, L. J. Harkness, F. C. L. Crespi, Dirk Weisshaar, P. Sona, A. Czermak, D. Lersch, N. Blasi, Anton Khaplanov, O. Stezowski, B. Rubio, R. Venturelli, M.-H. Sigward, E. Viscione, José Salt, C. S. Özben, Giancarlo Ripamonti, P. Spolaore, Johan Nyberg, S. M. Lenzi, L. Legeard, N. Redon, C. Rossi Alvarez, C. He, R. Chapman, P. Le Pouhalec, C. Diarra, Herbert Hess, T. Engert, A. Kaşkaş, Stanislav Tashenov, S. Klupp, C. Michelagnoli, Elif Ince, A. Algora, J. F. Smith, M. Ozille, Alessandro Zucchiatti, Angelo Geraci, A. Olariu, M. Labiche, N. Karkour, Stefano Riboldi, P. Bourgault, C. M. Petrache, M. Palacz, M. El Chambit, J.-L. Cercus, M. Zie¸bliński, Alex Wiens, R. Beunard, X. Lafay, T. Habermann, M. Karolak, L. Costa, Y. Aubert, Begoña Quintana, A P Robinson, V. F. E. Pucknell, D. Rosso, A. Capsoni, Emanuele Vardaci, L. Mihailescu, M. Tripon, E. Farnea, Ch. Theisen, Enrico Calore, G. Duchêne, N. V. Zamfir, X. Grave, S. Lunardi, I.H. Lazarus, José Blasco, D. Montanari, J.A. Sampson, P. H. Regan, N. Marginean, M. Pignanelli, L. Arnold, G. Benzoni, R. Krücken, G. de Angelis, D.P. Scraggs, I. Piqueras, D. M. Cullen, A. Obertelli, A. Bürger, D. Bortolato, G. Rainovski, A.R. Mather, P. Reiter, C. Unsworth, G. Baulieu, P. J. Coleman-Smith, C. Boiano, M. Richer, Sébastien Perrier, Agnese Giaz, Reynold J. Cooper, V. Vandone, S. Tanguy, C. Domingo-Pardo, A. Bouty, A. N. Grint, A. Maj, A. Gottardo, L. Berti, E. Pachoud, R. Marginean, E. A. Stefanova, A. Triossi, M. Nespolo, D. Bucurescu, R. Moro, H.T.M. Ha, D. S. Judson, J. L. Tain, A. Perego, Francesco Lelli, P. Detistov, B.Y. Ky, J. Ljungvall, B. Sowicki, M. Schlarb, F. Azaiez, P. Pariset, Ertan Şahin, R. Gernhäuser, M. Turcato, John Paul Strachan, B. Million, A. Atac, F. Carrio, D. Delbourg, F. Veronese, Th. Kröll, B. Cahan, A. Hernandez-Prieto, M. A. Bentley, K.M.M. Tun-Lanoë, B. Alikhani, P. Boutachkov, S. Leboutelier, Maria Doncel, A. M. Bizzeti-Sona, R. Touzery, A. Nannini, A. Lotode, P. J. Nolan, G. Rampazzo, F. Zocca, H. Schaffner, J. Eberth, A. Gadea, N. Toniolo, T. Hüyük, Q.T. Doan, P. Petkov, S. Broussard, S. Badoer, M. Rigato, Philip M Walker, J. Pouthas, Ch. Finck, L. Milechina, M. Norman, E. Pierre, J. Roccaz, S.J. Colosimo, Lázaro Guevara, Glyn Wittwer, Millan, Vicente Gonzalez -- 0000-0001-6014-2586, Rainovski, Georgi -- 0000-0002-1729-0249, Jaworski, Grzegorz -- 0000-0003-2241-0329, KORTEN, Wolfram -- 0000-0002-3940-0816, Domingo-Pardo, Cesar -- 0000-0002-2915-5466, Triossi, Andrea -- 0000-0001-5140-9154, Huyuk, Tayfun -- 0000-0003-0597-9767, Ince, Elif -- 0000-0003-4821-5441, Algora, Alejandro -- 0000-0002-5199-1794, Calore, Enrico -- 0000-0002-2301-3838, Rubio, Berta -- 0000-0002-9149-4151, THEISEN, Christophe -- 0000-0002-8509-1022, Rudolph, Dirk -- 0000-0003-1199-3055, Gadea, Andres -- 0000-0002-4233-1970, santos, cayetano -- 0000-0003-0727-1914, nannini, adriana -- 0000-0003-0659-7648, Depalo, Rosanna -- 0000-0003-3943-7982, Suliman, gabriel -- 0000-0001-8475-1992, Blasco, Jose-Maria -- 0000-0002-7663-9092, Petrache, Costel -- 0000-0001-8419-1390, Pietralla, Norbert -- 0000-0002-4797-3032, Cederwall, Bo -- 0000-0003-1771-2656, Zucchiatti, Alessandro -- 0000-0002-3647-596X, Mendez Munoz, Victor -- 0000-0002-9044-1189, Kruecken, Reiner -- 0000-0002-2755-8042, Napoli, Daniel Ricardo -- 0000-0002-8154-6958, Tain, Jose L. -- 0000-0002-3263-6965, SANCHIS, ENRIQUE -- 0000-0002-9689-9131, Zieblinski, Miroslaw -- 0000-0002-8693-7317, Hauschild, Karl -- 0000-0003-2862-2445, Montanari, Daniele -- 0000-0002-1980-7686, senyigit, menekse -- 0000-0002-2408-4419, La Rana, Giovanni -- 0000-0003-2814-4113, Menegazzo, Roberto -- 0000-0002-3060-5276, Soderstrom, Par-Anders -- 0000-0002-9504-2814, Unsworth, Carl -- 0000-0002-4100-7466, Camera, Franco -- 0000-0003-1731-4834, Gorgen, Andreas -- 0000-0003-1916-9941, Hernandez Prieto, Alvaro -- 0000-0002-0340-0240, Recchia, Francesco -- 0000-0002-8428-0112, de France, Gilles -- 0000-0002-7439-1759, GOTTARDO, Andrea -- 0000-0002-0390-5767, Perrier, Sebastien -- 0000-0001-5055-9046, Sowicki, Bogdan -- 0000-0002-7208-0690, Robinson, Andrew -- 0000-0002-2510-1321, Sahin, Eda -- 0000-0003-0683-5140, Pullia, Alberto -- 0000-0002-6393-747X, Lelli, Francesco -- 0000-0003-1900-9171, Clement, Emmanuel -- 0000-0003-1887-717X, benzoni, giovanna -- 0000-0002-7938-0338, Jonson, Bjorn -- 0000-0002-9697-9115, Bednarczyk, Piotr -- 0000-0002-5699-5292, Jones, Pete -- 0000-0001-7480-6603, Nicoletto, Marino -- 0000-0001-9301-0782, Ripamonti, Giancarlo -- 0000-0002-9406-021X, Bentley, Michael -- 0000-0001-8401-3455, Pellegri, Luna -- 0000-0002-3227-3332, Barrientos, Diego -- 0000-0001-9693-2942, GIAZ, Agnese -- 0000-0002-2550-450X, [Boston, A. J. -- Boston, H. C. -- Colosimo, S. -- Cooper, R. J. -- Cresswell, J. R. -- Dimmock, M. R. -- Filmer, F. -- Grint, A. N. -- Harkness, L. J. -- Judson, D. S. -- Mather, A. R. -- Moon, S. -- Nelson, L. -- Nolan, P. J. -- Norman, M. -- Oxley, D. C. -- Rigby, S. -- Sampson, J. -- Scraggs, D. P. -- Seddon, D. -- Slee, M. -- Stanios, T. -- Thornhill, J. -- Unsworth, C. -- Wells, D.] Univ Liverpool, Oliver Lodge Lab, Liverpool L69 7ZE, Merseyside, England -- [Akkoyun, S. -- Atac, A. -- Kaskas, A. -- Senyigit, M.] Ankara Univ, Fac Sci, Dept Phys, TR-06100 Ankara, Turkey -- [Algora, A. -- Barrientos, D. -- Domingo-Pardo, C. -- Egea, J. -- Gadea, A. -- Hueyuek, T. -- Kaci, M. -- Mendez, V. -- Rubio, B. -- Salt, J. -- Tain, J. L.] Univ Valencia, CSIC, IFIC, E-46980 Paterna, Spain -- [Alikhani, B. -- Boutachkov, P. -- Givechev, A. -- Goel, N. -- Leske, J. -- Merchan, E. -- Moeller, O. -- Pietralla, N. -- Reese, M. -- Stahl, C.] Tech Univ Darmstadt, IKP, D-64289 Darmstadt, Germany -- [Ameil, F. -- Beck, T. -- Boutachkov, P. -- Domingo-Pardo, C. -- Engert, T. -- Gerl, J. -- Goel, N. -- Habermann, T. -- Kojouharov, I. -- Kurz, N. -- Merchan, E. -- Pietri, S. -- Schaffner, H. -- Tashenov, S. -- Wollersheim, H. J.] GSI Helmholtzzentrum Schwerionenforsch GmbH, D-64291 Darmstadt, Germany -- [de Angelis, G. -- Badoer, S. -- Berti, L. -- Calore, E. -- Cocconi, P. -- Conventi, D. -- Costa, L. -- Fantinel, S. -- Gadea, A. -- Gottardo, A. -- Gulmini, M. -- He, C. -- Ince, E. -- Kroell, Th. -- Lelli, F. -- Maron, G. -- Molini, P. -- Napoli, D. R. -- Rigato, M. -- Rosso, D. -- Sahin, E. -- Spolaore, P. -- Toniolo, N. -- Valiente-Dobon, J. J.] Ist Nazl Fis Nucl, Lab Nazl Legnaro, IT-35020 Padua, Italy -- [Arnold, L. -- Baumann, R. -- Beck, F. A. -- El Chambit, M. -- Charles, L. -- Curien, D. -- Didierjean, F. -- Duchene, G. -- Faul, T. -- Filliger, M. -- Finck, Ch. -- Medina, P. -- Pachoud, E. -- Parisel, C. -- Piqueras, I. -- Richer, M. -- Robin, J. -- Santos, C. -- Sigward, M. -H. -- Weber, C.] Univ Strasbourg, IPHC, F-67037 Strasbourg, France -- [Arnold, L. -- Baumann, R. -- Beck, F. A. -- El Chambit, M. -- Charles, L. -- Curien, D. -- Didierjean, F. -- Duchene, G. -- Faul, T. -- Filliger, M. -- Finck, Ch. -- Medina, P. -- Pachoud, E. -- Parisel, C. -- Piqueras, I. -- Richer, M. -- Robin, J. -- Santos, C. -- Sigward, M. -H. -- Weber, C.] CNRS, UMR 7178, F-67037 Strasbourg, France -- [Astier, A. -- Cabaret, S. -- Desesquelles, P. -- Dosme, N. -- Gibelin, L. -- Ha, H. T. M. -- Hauschild, K. -- Karkour, N. -- Korichi, A. -- Lafay, X. -- Leboutelier, S. -- Legay, E. -- Lhenoret, S. -- Linget, D. -- Ljungvall, J. -- Lopez-Martens, A. -- Morbiducci, F. -- Ngo, V. L. -- Pariset, P. -- Perrier, S. -- Pierre, E. -- Roccaz, J. -- Travers, B.] Univ Paris 11, CNRS, IN2P3, CSNSM, F-91405 Orsay, France -- [Atac, A. -- Nyberg, J. -- Soderstrom, P. -A.] Uppsala Univ, Dept Phys & Astron, Uppsala, Sweden -- [Atac, A. -- Cederwall, B. -- Johnson, A. -- Khaplanov, A. -- van der Marel, J. -- Milechina, L. -- Tashenov, S.] Royal Inst Technol, SE-10691 Stockholm, Sweden -- [Aubert, Y. -- Azaiez, F. -- Le Blanc, F. -- Cercus, J. -L. -- Chambert, V. -- Commeaux, C. -- Delbourg, D. -- Diarra, C. -- Dorangeville, F. -- Edelbruck, P. -- Grave, X. -- Guevara, L. -- Harroch, H. -- Ky, B. Y. -- Lavergne, L. -- Lefebvre, F. -- Lermitage, A. -- Olariu, A. -- Oziol, C. -- Petrache, C. -- Pouthas, J. -- Salomon, F. -- Tanguy, S. -- Tun-Lanoe, K. M. M.] Univ Paris 11, CNRS, IN2P3, IPNO, F-91406 Orsay, France -- [Aufranc, C. -- Baulieu, G. -- Doan, Q. T. -- Pugnere, D. -- Redon, N. -- Rosse, B. -- Stezowski, O.] Univ Lyon 1, CNRS, IN2P3, Inst Phys Nucl Lyon, F-69622 Villeurbanne, France -- [Austin, A. -- Burrows, I. -- Coleman-Smith, P. J. -- Griffiths, R. -- Kogimtzis, M. -- Labiche, M. -- Lazarus, I. H. -- Letts, S. C. -- Morrall, P. S. -- Palin, J. -- Pucknell, V. F. E. -- Simpson, J. -- Strachan, J.] STFC Daresbury Lab, Warrington WA4 4AD, Cheshire, England -- [Aydin, S. -- Bazzacco, D. -- Bellato, M. -- Bortolato, D. -- Chavas, J. -- Colombo, A. -- Fanin, C. -- Farnea, E. -- Isocrate, R. -- Kroell, Th. -- Lenzi, S. M. -- Lunardi, S. -- Marginean, R. -- Menegazzo, R. -- Mengoni, D. -- Michelagnoli, C. -- Nespolo, M. -- Nicoletto, M. -- Peghin, R. -- Ramina, L. -- Rampazzo, G. -- Rebeschini, M. -- Recchia, F. -- Rossi Alvarez, C. -- Salvato, G. -- Triossi, A. -- Turcato, M. -- Ur, C. A. -- Venturelli, R. -- Veronese, F.] Ist Nazl Fis Nucl, Sez Padova, IT-35131 Padua, Italy -- [Balabanski, D. L. -- Detistov, P. -- Petkov, P. -- Stefanova, E.] Bulgarian Acad Sci, Inst Nucl Res & Nucl Energy, Sofia, Bulgaria -- [Bednarczyk, P. -- Czermak, A. -- Dulny, B. -- Grebosz, J. -- Maj, A. -- Meczynski, W. -- Sowicki, B. -- Zieblinski, M.] Polish Acad Sci, Henryk Niewodniczanski Inst Nucl Phys, PL-31342 Krakow, Poland -- [Bentley, M. A. -- Bloor, D. -- Joshi, P. -- Wadsworth, R.] Univ York, Dept Phys, York YO10 5DD, N Yorkshire, England -- [Benzoni, G. -- Blasi, N. -- Boiano, C. -- Bracco, A. -- Brambilla, S. -- Camera, F. -- Capsoni, A. -- Casati, G. -- Coelli, S. -- Corsi, A. -- Cortesi, A. -- Crespi, F. C. L. -- Geraci, A. -- Giaz, A. -- Leoni, S. -- Million, B. -- Montanari, D. -- Nicolini, R. -- Pellegri, L. -- Pignanelli, M. -- Pullia, A. -- Riboldi, S. -- Ripamonti, G. -- Tomasi, F. -- Vandone, V. -- Viscione, E. -- Wieland, O. -- Zocca, F.] Ist Nazl Fis Nucl, Sez Milano, IT-20133 Milan, Italy -- [Berthier, R. -- Bouty, A. -- Broussard, S. -- Buerger, A. -- Drouen, Y. -- Gros, P. -- Goergen, A. -- Hervieu, B. -- Karolak, M. -- Kebbiri, M. -- Korten, W. -- Ljungvall, J. -- Lotode, A. -- Mariette, Y. -- Le Noa, Y. -- Obertelli, A. -- Le Pouhalec, P. -- Salsac, M. -D. -- Theisen, Ch. -- Touzery, R. -- Veyssiere, Ch.] CEA, Ctr Saclay, IRFU, F-91191 Gif Sur Yvette, France -- [Beunard, R. -- Bourgault, P. -- Cahan, B. -- Clement, E. -- de France, G. -- Legeard, L. -- Ozille, M. -- Pancin, J. -- Raine, R. -- Ropert, J. -A. -- Saillant, F. -- Tripon, M. -- Wittwer, G.] CEA DSM CNRS IN2P3, GANIL, F-14076 Caen, France -- [Birkenbach, B. -- Bruyneel, B. -- Eberth, J. -- Hess, H. -- Jolie, J. -- Lersch, D. -- Pascovici, G. -- Reiter, P. -- Warr, N. -- Weisshaar, D. -- Wiens, A.] Univ Cologne, IKP, D-50937 Cologne, Germany -- [Bizzeti, P. G. -- Bizzeti-Sona, A. M. -- Giannatiempo, A. -- Melon, B. -- Perego, A. -- Sona, P.] Univ Florence, Dipartimento Fis & Astron, IT-50019 Florence, Italy -- [Bizzeti, P. G. -- Bizzeti-Sona, A. M. -- Giannatiempo, A. -- Melon, B. -- Nannini, A. -- Perego, A. -- Sona, P.] Ist Nazl Fis Nucl, Sez Firenze, IT-50019 Florence, Italy -- [Blasco, J. M. -- Carrio, F. -- Egea, J. -- Gonzalez, V. -- Sanchis, E.] Univ Valencia, Dept Elect Engn, E-46100 Burjassot, Valencia, Spain -- [Borsato, M. -- Bortolato, D. -- Lenzi, S. M. -- Lunardi, S. -- Marginean, R. -- Mengoni, D. -- Michelagnoli, C. -- Nespolo, M. -- Recchia, F. -- Salvato, G. -- Triossi, A. -- Venturelli, R.] Univ Padua, Dipartimento Fis, IT-35131 Padua, Italy -- [Bracco, A. -- Camera, F. -- Corsi, A. -- Crespi, F. C. L. -- Giaz, A. -- Leoni, S. -- Montanari, D. -- Nicolini, R. -- Pellegri, L. -- Pignanelli, M. -- Pullia, A. -- Riboldi, S. -- Vandone, V.] Univ Milan, Dipartimento Fis, IT-20133 Milan, Italy -- [Brawn, I. P.] STFC Rutherford Appleton Lab, Didcot OX11 0QX, Oxon, England -- [Brondi, A. -- Moro, R. -- La Rana, G. -- Vardaci, E.] Univ Naples Federico II, Dipartimento Fis, IT-80126 Naples, Italy -- [Brondi, A. -- Moro, R. -- La Rana, G. -- Vardaci, E.] Ist Nazl Fis Nucl, Sez Napoli, IT-80126 Naples, Italy -- [Bucurescu, D. -- Marginean, N. -- Marginean, R. -- Petcu, M. -- Ur, C. A.] Natl Inst Phys & Nucl Engn, Bucharest, Romania -- [Buerger, A. -- Suliman, G. -- Zamfir, N. V.] Univ Bonn, Helmholtz Inst Strahlen & Kernphys, D-53115 Bonn, Germany -- [Buerger, A.] Univ Oslo, Dept Phys, N-0316 Oslo, Norway -- [Casati, G. -- Geraci, A. -- Ripamonti, G.] Politecn Milan, Dipartimento Elettron & Informaz, IT-20133 Milan, Italy -- [Castoldi, M. -- Zucchiatti, A.] Ist Nazl Fis Nucl, Sez Genova, IT-16146 Genoa, Italy -- [Chapman, R. -- Mengoni, D. -- Orlandi, R. -- Smith, J. F.] Univ W Scotland, Sch Engn, Paisley PA1 2BE, Renfrew, Scotland -- [Cullen, D. M. -- Robinson, A. P.] Univ Manchester, Sch Phys & Astron, Schuster Lab, Manchester M13 9PL, Lancs, England -- [Depalo, R.] Univ Padua, Dipartimento Astron, IT-35131 Padua, Italy -- [Descombes, T. -- Simpson, G.] Univ Grenoble 1, CNRS, IN2P3, LPSC,INP Grenoble, F-38026 Grenoble, France -- [Doncel, M. -- Hernandez-Prieto, A. -- Quintana, B.] Univ Salamanca, Dept Fis Fundamental, E-37008 Salamanca, Spain -- [Erduran, M. N. -- Ince, E.] Istanbul Univ, Istanbul, Turkey -- [Erturk, S.] Nigde Univ, Fac Sci, Dept Phys, TR-51200 Nigde, Turkey -- [Gast, W. -- Lieder, R. M. -- Mihailescu, L.] Forschungszentrum Julich, Inst Kernphys, D-52425 Julich, Germany -- [Gernhaeuser, R. -- Klupp, S. -- Kruecken, R. -- Schlarb, M.] Tech Univ Munich, Phys Dept E12, D-85748 Garching, Germany -- [Jaworski, G.] Warsaw Univ Technol, Fac Phys, PL-00662 Warsaw, Poland -- [Jaworski, G. -- Mierzejewski, J. -- Palacz, M.] Univ Warsaw, Heavy Ion Lab, PL-02093 Warsaw, Poland -- [Jones, P.] Univ Jyvaskyla, Dept Phys, FI-40014 Jyvaskyla, Finland -- [Jonson, B.] Chalmers, S-41296 Gothenburg, Sweden -- [Jungclaus, A. -- Orlandi, R.] CSIC, Inst Estruct Mat, E-28006 Madrid, Spain -- [Kempley, R. S. -- Podolyak, Z. -- Regan, P. H. -- Walker, P. M.] Univ Surrey, Dept Phys, Guildford GU2 7XH, Surrey, England -- [Mitev, K. -- Rainovski, G.] Sofia Univ St Kliment Ohridski, Fac Phys, Sofia, Bulgaria -- [Ozben, C.] Istanbul Tech Univ, TR-80626 Istanbul, Turkey -- [Rudolph, D.] Lund Univ, Dept Phys, SE-22100 Lund, Sweden, Research Group: Information Management, CSNSM SNO, Centre de Spectrométrie Nucléaire et de Spectrométrie de Masse (CSNSM), Université Paris-Sud - Paris 11 (UP11)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS)-Université Paris-Sud - Paris 11 (UP11)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS)-Centre de Sciences Nucléaires et de Sciences de la Matière (CSNSM), Université Paris-Sud - Paris 11 (UP11)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), Institut de Physique Nucléaire d'Orsay (IPNO), informatique, Institut de Physique Nucléaire de Lyon (IPNL), Université Claude Bernard Lyon 1 (UCBL), Université de Lyon-Université de Lyon-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS)-Université Claude Bernard Lyon 1 (UCBL), Université de Lyon-Université de Lyon-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), Institut Pluridisciplinaire Hubert Curien (IPHC), Université de Strasbourg (UNISTRA)-Université de Haute-Alsace (UHA) Mulhouse - Colmar (Université de Haute-Alsace (UHA))-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), Grand Accélérateur National d'Ions Lourds (GANIL), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), Département de Physique Nucléaire (ex SPhN) (DPHN), Institut de Recherches sur les lois Fondamentales de l'Univers (IRFU), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université Paris-Saclay-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université Paris-Saclay, CSNSM MECA, Université Paris-Sud - Paris 11 (UP11)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS)-Université Paris-Sud - Paris 11 (UP11)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), Laboratoire de Physique Subatomique et de Cosmologie (LPSC), Université Joseph Fourier - Grenoble 1 (UJF)-Institut polytechnique de Grenoble - Grenoble Institute of Technology (Grenoble INP )-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Institut Polytechnique de Grenoble - Grenoble Institute of Technology-Centre National de la Recherche Scientifique (CNRS), CSNSM INFOR, CSNSM ELEC, Matière Nucléaire, Institut de Physique des 2 Infinis de Lyon (IP2I Lyon), AGATA, Akkoyun, S., Algora, A., Alikhani, B., Ameil, F., De Angelis, G, Arnold, L., Astier, A., Ataç, A., Aubert, Y., Aufranc, C., Austin, A., Aydin, S., Azaiez, F., Badoer, S., Balabanski, D. L., Barrientos, D., Baulieu G., L, Baumann, R., Bazzacco, D., Beck, F. A., Beck, T., Bednarczyk, P., Bellato, M., Bentley, M. A., Benzoni, G., Berthier, R., Berti, L., Beunard, R., Lo Bianco, G., Birkenbach, B., Bizzeti, P. G., Bizzeti Sona, A. M., Le Blanc, F., Blasco, J. M., Blasi, N., Bloor, D., Boiano, C., Borsato, M., Bortolato, D., Boston, A. J., Boston, H. C., Bourgault, P., Boutachkov, P., Bouty, A., Bracco, A., Brambilla, S., Brawn, I. P., Brondi, Augusto, Broussard, S., Bruyneel, B., Bucurescu, D., Burrows, I., Bürger, A., Cabaret, S., Cahan, B., Calore, E., Camera, F., Capsoni, A., Carrió, F., Casati, G., Castoldi, M., Cederwall, B., Cercus J., L, Chambert, V., El Chambit, M., Chapman, R., Charles, L., Chavas, J., Clément, E., Cocconi, P., Coelli, S., Coleman Smith, P. J., Colombo, A., Colosimo, S., Commeaux, C., Conventi, D., Cooper, R. J., Corsi, A., Cortesi, A., Costa, L., Crespi, F. C. L., Cresswell, J. R., Cullen, D. M., Curien, D., Czermak, A., Delbourg, D., Depalo, R., Descombes, T., Désesquelles, P., Detistov, P., Diarra, C., Didierjean, F., Dimmock, M. R., Doan, Q. T., Domingo Pardo, C., Doncel, M., Dorangeville, F., Dosme, N., Drouen, Y., Duchêne, G., Dulny, B., Eberth, J., Edelbruck, P., Egea, J., Engert, T., Erduran, M. N., Ertürk, S., Fanin, C., Fantinel, S., Farnea, E., Faul, T., Filliger, M., Filmer, F., Finck, C., De France, G., Gadea, A., Gast, W., Geraci, A., Gerl, J., Gernhäuser, R., Giannatiempo, A., Giaz, A., Gibelin, L., Givechev, A., Goel, N., González, V., Gottardo, A., Grave, X., Grȩbosz, J., Griffiths, R., Grint, A. N., Gros, P., Guevara, L., Gulmini, M., Görgen, A., Ha, H. T. M., Habermann, T., Harkness, L. J., Harroch, H., Hauschild, K., He, C., Hernández Prieto, A., Hervieu, B., Hess, H., Hüyük, T., Ince, E., Isocrate, R., Jaworski, G., Johnson, A., Jolie, J., Jones, P., Jonson, B., Joshi, P., Judson, D. S., Jungclaus, A., Kaci, M., Karkour, N., Karolak, M., Kaşkaş, A., Kebbiri, M., Kempley, R. S., Khaplanov, A., Klupp, S., Kogimtzis, M., Kojouharov, I., Korichi, A., Korten, W., Kröll, T., Krücken, R., Kurz, N., Ky, B. Y., Labiche, M., Lafay, X., Lavergne, L., Lazarus, I. H., Leboutelier, S., Lefebvre, F., Legay, E., Legeard, L., Lelli, F., Lenzi, S. M., Leoni, S., Lermitage, A., Lersch, D., Leske, J., Letts, S. C., Lhenoret, S., Lieder, R. M., Linget, D., Ljungvall, J., Lopez Martens, A., Lotodé, A., Lunardi, S., Maj, A., Van Der Marel, J., Mariette, Y., Marginean, N., Marginean, R., Maron, G., Mather, A. R., Mȩczyński, W., Mendéz, V., Medina, P., Melon, B., Menegazzo, R., Mengoni, D., Merchan, E., Mihailescu, L., Michelagnoli, C., Mierzejewski, J., Milechina, L., Million, B., Mitev, K., Molini, P., Montanari, D., Moon, S., Morbiducci, F., Moro, RENATA EMILIA MARIA, Morrall, P. S., Möller, O., Nannini, A, Napoli, D. R., Nelson, L., Nespolo, M., Ngo, V. L., Nicoletto, M., Nicolini, R., Le Noa, Y., Nolan, P. J., Norman, M., Nyberg, J., Obertelli, A., Olariu, A., Orlandi, R., Oxley, D. C., Özben, C., Ozille, M., Oziol, C., Pachoud, E., Palacz, M., Palin, J., Pancin, J., Parisel, C., Pariset, P., Pascovici, G., Peghin, R., Pellegri, L., Perego, A., Perrier, S., Petcu, M., Petkov, P., Petrache, C., Pierre, E., Pietralla, N., Pietri, S., Pignanelli, M., Piqueras, I., Podolyak, Z., Le Pouhalec, P., Pouthas, J., Pugnére D., L, Pucknell, V. F. E., Pullia, A., Quintana, B., Raine, R., Rainovski, G., Ramina, L., Rampazzo, G., LA RANA, Giovanni, Rebeschini, M., Recchia, F., Redon N., L, Reese M., C, Reiter, P., Regan, P. H., Riboldi, S., Richer, M., Rigato, M., Rigby, S., Ripamonti, G., Robinson, A., Robin, J., Roccaz, J., Ropert, J. A., Rossé, B. l., Rossi Alvarez, C., Rosso, D., Rubio, B., Rudolph, D., Saillant, F., Şahin, E., Salomon, F., Salsac, M. D., Salt, J., Salvato, G., Sampson, J., Sanchis, E., Santos, C., Schaffner, H., Schlarb, M., Scraggs, D. P., Seddon, D., Şenyiǧit, M., Sigward, M. H., Simpson, G., Simpson, J., Slee, M., Smith, J. F., Sona, P., Sowicki, B., Spolaore, P., Stahl, C., Stanios, T., Stefanova, E., Stézowski, O., Strachan, J., Suliman, G., Söderström, P. A., Tain, J. L., Tanguy, S., Tashenov, S., Theisen, C. h., Thornhill, J., Tomasi, F., Toniolo, N., Touzery, R., Travers, B., Triossi, A., Tripon, M., Tun Lanoë, K. M. M., Turcato, M., Unsworth, C., Ur, C. A., Valiente Dobon, J. J., Vandone, V., Vardaci, Emanuele, Venturelli, R., Veronese, F., Veyssiere, C., Viscione, E., Wadsworth, R., Walker, P. M., Warr, N., Weber, C., Weisshaar, D., Wells, D., Wieland, O., Wiens A., U, Wittwer, G., Wollersheim, H. J., Zocca, F., Zamfir, N. V., Ziȩbliński, M., Zucchiatti, A., Centre National de la Recherche Scientifique (CNRS)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Paris-Sud - Paris 11 (UP11)-Centre National de la Recherche Scientifique (CNRS)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Paris-Sud - Paris 11 (UP11)-Centre de Sciences Nucléaires et de Sciences de la Matière (CSNSM), Centre National de la Recherche Scientifique (CNRS)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Paris-Sud - Paris 11 (UP11), Centre National de la Recherche Scientifique (CNRS)-Université Claude Bernard Lyon 1 (UCBL), Université de Lyon-Université de Lyon-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3), Université de Strasbourg (UNISTRA)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), Centre National de la Recherche Scientifique (CNRS)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3), Centre National de la Recherche Scientifique (CNRS)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Paris-Sud - Paris 11 (UP11)-Centre National de la Recherche Scientifique (CNRS)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Paris-Sud - Paris 11 (UP11), Institut polytechnique de Grenoble - Grenoble Institute of Technology (Grenoble INP )-Institut Polytechnique de Grenoble - Grenoble Institute of Technology-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Joseph Fourier - Grenoble 1 (UJF)-Centre National de la Recherche Scientifique (CNRS), Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Claude Bernard Lyon 1 (UCBL), Université de Lyon-Université de Lyon-Centre National de la Recherche Scientifique (CNRS)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Claude Bernard Lyon 1 (UCBL), Université de Lyon-Université de Lyon-Centre National de la Recherche Scientifique (CNRS), and 0-Belirlenecek
Subjects: Nuclear and High Energy Physics, Physics - Instrumentation and Detectors, Pulse-shape and gamma-ray tracking algorithms, FOS: Physical sciences, Semiconductor detector performance and simulations, Integrated circuit, [PHYS.NEXP]Physics [physics]/Nuclear Experiment [nucl-ex], Tracking (particle physics), gamma-Ray tracking, 01 natural sciences, Pulse-shape and γ-ray tracking algorithms, law.invention, Data acquisition, law, 0103 physical sciences, ddc:530, [PHYS.PHYS.PHYS-INS-DET]Physics [physics]/Physics [physics]/Instrumentation and Detectors [physics.ins-det], Nuclear Experiment (nucl-ex), 010306 general physics, γ-Ray spectroscopy, Nuclear Experiment, Instrumentation, Digital signal processing, Event reconstruction, gamma-Ray spectroscopy, Physics, sezele, Spectrometer, Spectrometers, 010308 nuclear & particles physics, business.industry, Detector, AGATA, Digital signals, HPGe detectors, Pulse-shape, Ray tracking, HPGe detectors, Algorithms, Crystals, Germanium, Semiconductor detectors, Signal processing, Spectrometry, Tracking (position), γ-Ray tracking, Instrumentation and Detectors (physics.ins-det), AGATA, Física nuclear, business, Computer hardware
Abstract: WOS: 000300864200005, The Advanced GAmma Tracking Array (AGATA) is a European project to develop and operate the next generation gamma-ray spectrometer. AGATA is based on the technique of gamma-ray energy tracking in electrically segmented high-purity germanium crystals. This technique requires the accurate determination of the energy, time and position of every interaction as a gamma ray deposits its energy within the detector volume. Reconstruction of the full interaction path results in a detector with very high efficiency and excellent spectral response. The realisation of gamma-ray tracking and AGATA is a result of many technical advances. These include the development of encapsulated highly segmented germanium detectors assembled in a triple cluster detector cryostat, an electronics system with fast digital sampling and a data acquisition system to process the data at a high rate. The full characterisation of the crystals was measured and compared with detector-response simulations. This enabled pulse-shape analysis algorithms, to extract energy, time and position, to be employed. In addition, tracking algorithms for event reconstruction were developed. The first phase of AGATA is now complete and operational in its first physics campaign. In the future AGATA will be moved between laboratories in Europe and operated in a series of campaigns to take advantage of the different beams and facilities available to maximise its science output. The paper reviews all the achievements made in the AGATA project including all the necessary infrastructure to operate and support the spectrometer. (C) 2011 Elsevier B.V. All rights reserved., EU [RII3-CT-2004-506065]; German BMBF [06K-167, 06KY2051]; Swedish Research Council; Knut and Alice Wallenberg Foundation; UK EPSRC Engineering and Physical Sciences Research Council; UK STFC Science and Technology Facilities Council; AWE plc; Scientific and Technological Research Council of Turkey [106T055]; Ankara University [05B4240002]; Polish Ministry of Science and Higher Education [DPN/N190/AGATA/2009]; Spanish MICINN [FPA2008-06419, FPA2009-13377-C02-02]; Spanish Consolider-Ingenio Programme CPAN [CSD2007-00042]; Generalitat Valenciana [PROMETEO/2010/101]; MICINN, Spain; INFN, Italy [AIC10-D-000568]; Science and Technology Facilities Council [ST/F012039/1, ST/J000094/1, ST/F004192/1, ST/J000159/1, ST/I504940/1, NuSTAR, ST/F006950/1, ST/I504916/1, ST/G000670/1, ST/F004060/1, ST/J000051/1, ST/J000108/1, ST/G000670/1 NuSTAR, ST/I504959/1, ST/G000727/1, ST/F004052/1, ST/F004184/1], AGATA and this work is supported by the European funding bodies and the EU Contract RII3-CT-2004-506065, the German BMBF under Grants 06K-167 and 06KY2051, the Swedish Research Council and the Knut and Alice Wallenberg Foundation, UK EPSRC Engineering and Physical Sciences Research Council, UK STFC Science and Technology Facilities Council, AWE plc, Scientific and Technological Research Council of Turkey (Proj. nr. 106T055) and Ankara University (BAP Proj. nr. 05B4240002), the Polish Ministry of Science and Higher Education under Grant DPN/N190/AGATA/2009, the Spanish MICINN under grants FPA2008-06419 and FPA2009-13377-C02-02, the Spanish Consolider-Ingenio 2010 Programme CPAN (contract number CSD2007-00042) the Generalitat Valenciana under Grant PROMETEO/2010/101, and research performed in the frame of the GSI-IN2P3 collaboration agreement number 02-42. A. Gadea and E. Farnea acknowledge the support of MICINN, Spain, and INFN, Italy, through the AIC10-D-000568 bilateral action.
Published: 2012

34. The SAGE spectrometer: A tool for combined in-beam gamma-ray and conversion electron spectroscopy

Author: J.R. Cresswell, Peter M. Jones, J. Thornhill, D. Wells, Mikael Sandzelius, D. Seddon, P. J. Coleman-Smith, J. Sorri, Rolf-Dietmar Herzberg, R. Julin, J. Simpson, S. C. Letts, E. Parr, Daniel Cox, V. F. E. Pucknell, Philippos Papadakis, I.H. Lazarus, J.A. Sampson, Janne Pakarinen, Pauli Peura, P. A. Butler, Panu Rahkila, Paul Greenlees, K. Hauschild, CSNSM SNO, Centre de Spectrométrie Nucléaire et de Spectrométrie de Masse (CSNSM), Centre National de la Recherche Scientifique (CNRS)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Paris-Sud - Paris 11 (UP11)-Centre National de la Recherche Scientifique (CNRS)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Paris-Sud - Paris 11 (UP11)-Centre de Sciences Nucléaires et de Sciences de la Matière (CSNSM), and Université Paris-Sud - Paris 11 (UP11)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS)
Subjects: Physics, History, Spectrometer, 010308 nuclear & particles physics, business.industry, Physics::Instrumentation and Detectors, Electron, [PHYS.NEXP]Physics [physics]/Nuclear Experiment [nucl-ex], 7. Clean energy, 01 natural sciences, Electron spectroscopy, Recoil separator, Computer Science Applications, Education, Semiconductor detector, Nuclear physics, Optics, Internal conversion, 0103 physical sciences, Silicon detector, High Energy Physics::Experiment, 010306 general physics, business, Nuclear Experiment, Beam (structure)
Abstract: International audience; The sage spectrometer allows simultaneous in-beam -ray and internal conversion electron measurements, by combining a germanium detector array with a highly segmented silicon detector and an electron transport system. sage is coupled with the ritu gas- lled recoil separator and the great focal-plane spectrometer for recoil-decay tagging studies. Digital electronics are used both for the ray and the electron parts of the spectrometer. sage was commissioned in the Accelerator Laboratory of the University of Jyvaskyla in the beginning of 2010.
Published: 2010

35. Breakup channels forC12triple-αcontinuum states

Author: Björn Jonson, S. P. Fox, Göran Hugo Nyman, A. Nieminen, F.C. Barker, C. Aa. Diget, Henrik B. Jeppesen, María José García Borge, Heikki Penttilä, A. Jokinen, Peter Dendooven, Olof Tengblad, H. O. U. Fynbo, J. Äystö, Jussi Huikari, V. F. E. Pucknell, K. Wilhelmsen, S. Hyldegaard, Y. Wang, B. R. Fulton, Tommi Eronen, R. Boutami, K. Riisager, Sami Rinta-Antila, Iain Moore, and Anu Kankainen
Subjects: Physics, Nuclear and High Energy Physics, Angular momentum, Excited state, Nuclear Theory, Continuum (design consultancy), Carbon-12, Alpha particle, Atomic physics, Nuclear Experiment, Spin (physics), Ground state, Breakup
Abstract: The triple-alpha-particle breakup of states in the triple-alpha continuum of C-12 has been investigated by way of coincident detection of all three alpha particles of the breakup. The states have been fed in the beta decay of N-12 and B-12, and the alpha particles measured using a setup that covers all of the triple-alpha phase space. Contributions from the breakup through the Be-8(0(+)) ground state as well as other channels-interpreted as breakup through excited energies in Be-8-have been identified. Spins and parities of C-12 triple-alpha continuum states are deduced from the measured phase-space distributions for breakup through Be-8 above the ground state by comparison to a fully symmetrized sequential R-matrix description of the breakup. At around 10 MeV in C-12, the breakup is found to be dominated by 0(+) strength breaking up through the ghost of the Be-8(0(+)) ground state with L = 0 angular momentum between the first emitted alpha particle and the intermediate Be-8 nucleus. For C-12 energies above the 12.7 MeV 1(+) state, however, L = 2 breakup of a C-12 2(+) state through the Be-8(2(+)) excited state dominates. Furthermore, the possibility of a 2(+) excited state in the 9-12 MeV region of C-12 is investigated.
Published: 2009

36. TIARA: a large solid angle silicon array for direct reaction studies with radioactive beams

Author: V. F. E. Pucknell, Y. Merrer, S. Appleton, R. Chapman, W. Gelletly, N. Curtis, B. Lecornu, G. Voltolini, G. Moores, W. N. Catford, L. Olivier, H. Savajols, J.M. Casadjian, M. Rejmund, C. Marry, D. D. Warner, G. Iltis, Marielle Chartier, N. I. Ashwood, N. L. Achouri, S.D. Pain, B. Raine, B. Fernández-Domínguez, Ch. Theisen, M. Burns, X. Liang, Martin Freer, T. D. Baldwin, C. N. Timis, O. Sorlin, Julien Gautier, N. A. Orr, Luis Caballero, J. Cacitti, Berta Rubio, Roy Crawford Lemmon, M. Labiche, F. Saillant, N. Amzal, K. Faiz, K. M. Spohr, Nuclear Physics Group, STFC Daresbury Laboratory, Department of Engineering and Science, University of the West of Scotland (UWS), Department of Physics, University of Surrey (UNIS), Laboratoire de physique corpusculaire de Caen (LPCC), Université de Caen Normandie (UNICAEN), Normandie Université (NU)-Normandie Université (NU)-École Nationale Supérieure d'Ingénieurs de Caen (ENSICAEN), Normandie Université (NU)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), Oliver Lodge Laboratory, University of Liverpool, School of Physics and Astronomy, University of Birmingham [Birmingham], Instituto de Fisica Corpuscular (IFIC), Consejo Superior de Investigaciones Científicas [Madrid] (CSIC)-Universitat de València (UV), Grand Accélérateur National d'Ions Lourds (GANIL), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), Institut de Recherches sur les lois Fondamentales de l'Univers (IRFU), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université Paris-Saclay, Normandie Université (NU)-Centre National de la Recherche Scientifique (CNRS)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3), and Centre National de la Recherche Scientifique (CNRS)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)
Subjects: Nuclear and High Energy Physics, Proton, Physics::Instrumentation and Detectors, Position sensitive silicon detectors, FOS: Physical sciences, Kinematics, [PHYS.NEXP]Physics [physics]/Nuclear Experiment [nucl-ex], 01 natural sciences, Nuclear physics, 0103 physical sciences, Nuclear Experiment (nucl-ex), 010306 general physics, Nuclear Experiment, Instrumentation, Physics, Spectrometer, Inverse kinematics, 010308 nuclear & particles physics, Nucleon transfer reactions, Detector, Solid angle, 3. Good health, Excited state, Ground state, Radioactive beams
Abstract: A compact, quasi-4 pi position sensitive silicon array. TIARA, designed to study direct reactions induced by radioactive beams in inverse kinematics is described here. The Transfer and Inelastic All-angle Reaction Array (TIARA) consists of 8 resistive charge division detectors forming an octagonal barrel around the target and a set of double-sided silicon-strip annular detectors positioned at each end of the barrel. The detector was coupled to the gamma-ray array EXOGAM and the spectrometer VAMOS at the GANIL Laboratory to demonstrate the potential of such an apparatus with radioactive beams. The N-14(d,p)N-15 reaction, well known in direct kinematics, has been carried out in inverse kinematics for that purpose. The observation of the N-15 ground state and excited states at 7.16 and 7.86 MeV is presented here as well as the comparison of the measured proton angular distributions with DWBA calculations. Transferred l-values are in very good agreement with both theoretical calculations and previous experimental results obtained in direct kinematics., The collaboration wishes to thank the GANIL cyclotron operations crew for delivering the 14N beam.Partial support from the European Union under contract No506065 and from the Spanish MEC Grant FPA2005-03993 are also gratefully acknowledged. The development and construction of TIARA were financed by an EPSRC(UK) grant.
Published: 2009

37. Towards combining in-beam γ-ray and conversion electron spectroscopy

Author: P. Papadakis, R.-D. Herzberg, J. Pakarinen, P. A. Butler, P. J. Coleman-Smith, J. R. Cresswell, P. T. Greenlees, P. Jones, R. Julin, I. H. Lazarus, S. C. Letts, R. D. Page, E. Parr, P. Peura, V. F. E. Pucknell, P. Rahkila, D. A. Seddon, J. Simpson, J. Sorri, J. Thornhill, D. Wells, Jan Jolie, Andreas Zilges, Nigel Warr, and Andrey Blazhev
Subjects: Nuclear physics, Physics, Spectrometer, Proton, Physics::Instrumentation and Detectors, Nuclear Theory, Resolution (electron density), Gamma ray, Gamma spectroscopy, Nuclear Experiment, Spectroscopy, Electron spectroscopy, Particle detector
Abstract: The SAGE spectrometer will combine a segmented Si‐detector with a Ge‐detector array aiming to take the simultaneous in‐beam γ‐ray and conversion electron spectroscopy to the next level. It will be coupled with the GREAT focal plane spectrometer and the RITU gas‐filled recoil separator at the accelerator laboratory of the University of Jyvaskyla, Finland. Its high efficiency and resolution will open the door to a new era of complete spectroscopy directed, amongst others, at the study of superheavy nuclei aiming to investigate the properties of the next spherical proton shell above Z = 82.
Published: 2009

38. Probing the maximally deformed light rare-earth region around the drip-line nucleus 130Sm

Author: M Petri, E S Paul, P J Nolan, A J Boston, R J Cooper, M R Dimmock, S Gros, B M McGuirk, H C Scraggs, G Turk, B Rossé, M Meyer, N Redon, Ch Schmitt, O Stézowski, D Guinet, Ph Lautesse, G De France, S Bhattachasyya, G Mukherjee, F Rejmund, M Rejmund, H Savajols, J N Scheurer, A Astier, I Deloncle, A Prévost, B M Nyakó, J Gál, J Molnár, J Timár, L Zolnai, K Juhász, V F E Pucknell, R Wadsworth, P Joshi, G La Rana, R Moro, M Trotta, E Vardaci, G Hackman, G Ball, Institut de Physique Nucléaire de Lyon (IPNL), Université Claude Bernard Lyon 1 (UCBL), Université de Lyon-Université de Lyon-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), Grand Accélérateur National d'Ions Lourds (GANIL), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), Centre d'Etudes Nucléaires de Bordeaux Gradignan (CENBG), Université Sciences et Technologies - Bordeaux 1 (UB)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), Centre de Spectrométrie Nucléaire et de Spectrométrie de Masse (CSNSM), Université Paris-Sud - Paris 11 (UP11)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), EXOGAM, Centre National de la Recherche Scientifique (CNRS)-Université Claude Bernard Lyon 1 (UCBL), Université de Lyon-Université de Lyon-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3), Centre National de la Recherche Scientifique (CNRS)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3), Université Sciences et Technologies - Bordeaux 1-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), Centre National de la Recherche Scientifique (CNRS)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Paris-Sud - Paris 11 (UP11), M., Petri, E. S., Paul, P. J., Nolan, A. J., Boston, R. J., Cooper, M. R., Dimmock, S., Gro, B. M., Mcguirk, H. C., Scragg, G., Turk, B., Rosse, M., Meyer, N., Redon, Schmitt, C. h., O., Stezowski, D., Guinet, Lautesse, P. h., G., De France, S., Bhattacharyya, G., Mukherjee, F., Rejmund, M., Rejmund, H., Savajol, J. N., Scheurer, A., Astier, I., Deloncle, A., Prevost, B. M., Nyako, J., Gal, J., Molnar, J., Timar, L., Zolnai, K., Juhasz, V. F. E., Pucknell, R., Wadsworth, P., Joshi, LA RANA, Giovanni, Moro, RENATA EMILIA MARIA, M., Trotta, Vardaci, Emanuele, G., Hackman, and G., Ball
Subjects: radioactive ion beam, Proton, Nuclear Theory, 27.60.+j, 21.10.Re, 23.20.Lv, [PHYS.NEXP]Physics [physics]/Nuclear Experiment [nucl-ex], 01 natural sciences, Cerium Isotopes, Nuclear physics, ground-state deformation, 0103 physical sciences, medicine, Neutron, Nuclear Experiment, 010306 general physics, Spin (physics), Mathematical Physics, Line (formation), Physics, Spectrometer, 010308 nuclear & particles physics, neutron deficient rare-earth nuclei, Condensed Matter Physics, Atomic and Molecular Physics, and Optics, medicine.anatomical_structure, Physics::Accelerator Physics, Atomic physics, charged particle spectrometer, Nucleus, Beam (structure)
Abstract: The neutron deficient rare-earth nuclei of the A similar to 130 region are of particular interest since highly deformed prolate ground states are expected. Indeed these nuclei are predicted to show maximal ground-state deformations of beta(2) similar to 0.40 (axis ratio of 3:2), comparable to the deformation deduced for superdeformed cerium isotopes at high spin. A fusion-evaporation experiment was performed with radioactive ion beams at GANIL in October 2004 which had the goal to reach very proton-rich exotic nuclei located near the proton drip-line. A radioactive Kr-76 beam, delivered by the SPIRAL facility, was used to bombard a thin Ni-58 target. Emitted gamma-rays were detected by the EXOGAM gamma-ray spectrometer which was, for the first time, coupled with both the DIAMANT charged-particle array and the VAMOS spectrometer.
Published: 2006

39. A new concept in data acquisition electronics, control, and monitoring for the next generation of nuclear gamma ray spectrometer

Author: H. Kluge, C. Ender, V. F. E. Pucknell, C. Ring, M.M. Aleonard, J.R. Cresswell, I.H. Lazarus, S. Kossionides, A. Richard, P. J. Nolan, L. Wendling, P. Ziem, Anders Holm, K.H. Maier, F.A. Beck, W. Gast, Institut de Recherches Subatomiques (IReS), Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Cancéropôle du Grand Est-Université Louis Pasteur - Strasbourg I-Centre National de la Recherche Scientifique (CNRS), Centre d'Etudes Nucléaires de Bordeaux Gradignan (CENBG), Université Sciences et Technologies - Bordeaux 1-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), and Heyd, Yvette
Subjects: Ethernet, Nuclear and High Energy Physics, Engineering, [PHYS.NEXP] Physics [physics]/Nuclear Experiment [nucl-ex], business.industry, [PHYS.NEXP]Physics [physics]/Nuclear Experiment [nucl-ex], Data acquisition, Nuclear Energy and Engineering, Nuclear electronics, Control system, Computer data storage, Electronic engineering, Instrumentation (computer programming), Electronics, Electrical and Electronic Engineering, business, Computer hardware, VMEbus
Abstract: A new data acquisition system designed for a future high-resolution gamma-ray detector array-the Euroball-is described. It will use newly designed high-resolution electronics together with the VXIbus system as the instrumentation bus. The planned electronics and the general structure of the data acquisition system are described in detail. For control and setup of the data acquisition system, Ethernet based communication is planned. The other elements involved in a data acquisition system (readout, graphics, sorting, storage, etc.) are being planned using international standards and a European agreed solution wherever possible. Depending on the possible integration density and the number of channels, the whole system will consist of 10 to 16 VXI crates containing the digitizing electronics and several VME crates for event filter CPUs and data storage control. >
Published: 1990

40. Study of the neutron-rich nucleusSi36

Author: Roberto Menegazzo, A. Hodsdon, A. Jungclaus, F. Azaiez, Suzana Szilner, V. F. E. Pucknell, B. R. Behera, R. Chapman, N. Toniolo, G. de Angelis, M. Trotta, D. R. Napoli, A. Papenberg, M. Stanoiu, F. Scarlassara, A. M. Stefanini, D. Bazzacco, Z. M. Wang, S. Beghini, L. Corradi, D. Verney, M. Burns, X. Liang, F. Haas, L. Berti, G. Pollarolo, Zsolt Dombrádi, K. M. Spohr, S. Lunardi, J. Wrzesiński, Alick Deacon, F. Ibrahim, A. Gadea, M. D. Salsac, E. Farnea, J. F. Smith, A. Latina, F. Nowacki, D. Curien, E. Fioretto, K. Keyes, N. Marginean, G. Montagnoli, E. Caurier, and J. Ollier
Subjects: Physics, Nuclear and High Energy Physics, 010308 nuclear & particles physics, SHELL model, Solid angle, 01 natural sciences, Ion, medicine.anatomical_structure, Excited state, 0103 physical sciences, medicine, Level structure, Neutron, Atomic physics, 010306 general physics, Nucleus
Abstract: Excited states of $N=22$ $^{36}\mathrm{Si}$, populated in deep-inelastic processes produced by the interaction of a 215 MeV beam of $^{36}\mathrm{S}$ ions with a $^{208}\mathrm{Pb}$ target, were studied in the present work. \ensuremath{\gamma} rays from the binary fragments detected using CLARA, an array of 25 Ge Clover detectors, were measured in coincidence with projectile-like fragments detected by PRISMA, a large solid angle magnetic spectrometer. Two new \ensuremath{\gamma}-ray photopeaks at energies of 1442 and 842 keV were observed and tentatively assigned to the ${4}^{+}\ensuremath{\rightarrow}{2}^{+}$ and ${6}^{+}\ensuremath{\rightarrow}{4}^{+}$ transitions, respectively. The systematics of the level structures of $N=22$ isotones are presented, and a comparison is made of the behavior of Si, Mg, and S isotopes. The level structure of $^{36}\mathrm{Si}$ is also compared with the results of $\mathit{sdpf}$ shell model calculations.
Published: 2006

41. Characterisation of Pixellated CdZnTe Detectors for Use in a Portable Gamma-Ray Spectrometer

Author: P. J. Nolan, S. C. Letts, A. Petts, I.H. Lazarus, D. M. Cullen, V. F. E. Pucknell, Susan Rigby, J. Simpson, A. J. Boston, D. C. Oxley, and Paul Seller
Subjects: Physics, Photon, Spectrometer, Physics::Instrumentation and Detectors, business.industry, Physics::Medical Physics, Detector, Compton scattering, Collimator, Context (language use), Collimated light, law.invention, Optics, law, Spectroscopy, business
Abstract: The characterization of a pixellated CdZnTe detector will be discussed in the context of the development of a portable gamma-ray spectrometer device. The device will utilize the spectroscopic properties of CdZnTe to provide both isotopic identification and directional information. The CdZnTe sensors will be configured for use as a Compton camera, maximizing the efficiency for both spectroscopy and imaging of the source being assayed. In order to achieve this, pulse shape analysis algorithms are being developed to accurately determine the position of the interaction of a gamma-ray photon within the detector. A pixellated CdZnTe detector has been scanned by moving a highly collimated source in controlled steps across the surface of the detector and taking data for a set period of time at each position. In this work, a 57Co source has been used with a 1 mm tungsten injection collimator moved in 1 mm steps across the front face and side surfaces of the detector. The results from the preparatory work and the initial scans of the detector are discussed in this work.
Published: 2006

42. The CLARA-PRISMA setup installed at LNL: first results

Author: G. de Angelis, S. Beghini, M. Pignanelli, A. M. Bizzeti-Sona, A. Gadea, G. Montagnoli, X. Liang, Roberto Menegazzo, G. Pollarolo, M. Nespolo, L. Corradi, D. Curien, P. G. Bizzeti, M. Trotta, E. Fioretto, A. M. Stefanini, C. Rusu, V. F. E. Pucknell, B. R. Behera, F. Della Vedova, M Chambit, B. J. Varley, S. Leoni, N. Marginean, S. Lunardi, B. Million, Roy Crawford Lemmon, R. Chapman, C. A. Ur, Suzana Szilner, D. R. Napoli, E. Farnea, S. J. Freeman, S. M. Lenzi, W. Zhimin, P. Medina, M. Axiotis, Fernando Scarlassara, A. Bracco, F. Camera, A. Latina, D. Bazzacco, A. G. Smith, Institut de Recherches Subatomiques (IReS), Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Cancéropôle du Grand Est-Université Louis Pasteur - Strasbourg I-Centre National de la Recherche Scientifique (CNRS), and P. Regan, P. Stevenson
Subjects: Nuclear physics, Physics, Nuclear and High Energy Physics, Spectrometer, 010308 nuclear & particles physics, 0103 physical sciences, Detector, [PHYS.NEXP]Physics [physics]/Nuclear Experiment [nucl-ex], 010306 general physics, 7. Clean energy, 01 natural sciences, Linear particle accelerator
Abstract: CLARA is an array of 25 Clover (EUROBALL type) Ge detectors, placed at the target position of the large acceptance magnetic spectrometer PRISMA. Due to the granularity of the CLARA Ge array (100 crystals), the photopeak efficiency ($\approx$3%) and the PRISMA large acceptance ($\approx$80 msr, and 20% $\Delta$p/p), the setup is an excellent tool to investigate the structure of neutron-rich nuclei, populated in multinucleon transfer reactions and deep inelastic collisions with stable beams. Since March 2004 the setup is fully operational, and since then several experiments have been performed, with beams delivered by the LNL XTU-Tandem and the ALPI linac. In this contribution the preliminary outcome of the first experiments is shown.
Published: 2005

43. Spectroscopy of $^{212}$Po and $^{213}$At using a $^8$He radioactive beam and EXOGAM

Author: A. B. Garnsworthy, B. Rossé, G. A. Jones, G. J. Lane, V. F. E. Pucknell, S. J. Williams, R. J. Senior, G. Sletten, Karin Andgren, Alison Bruce, W. N. Catford, Sanchita Mandal, E. S. Paul, A. P. Byrne, N. Redon, N. J. Thompson, G.D. Dracoulis, Philip M Walker, Bo Cederwall, Zs. Podolyák, B. M. McGuirk, Grand Accélérateur National d'Ions Lourds (GANIL), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), Institut de Physique Nucléaire de Lyon (IPNL), Université Claude Bernard Lyon 1 (UCBL), Université de Lyon-Université de Lyon-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), EXOGAM, SPIRAL, Centre National de la Recherche Scientifique (CNRS)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3), Centre National de la Recherche Scientifique (CNRS)-Université Claude Bernard Lyon 1 (UCBL), and Université de Lyon-Université de Lyon-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)
Subjects: Physics, Nuclear reaction, Nuclear and High Energy Physics, education.field_of_study, 010308 nuclear & particles physics, Cyclotron, Population, [PHYS.NEXP]Physics [physics]/Nuclear Experiment [nucl-ex], 01 natural sciences, law.invention, Ion, law, Excited state, 0103 physical sciences, Gamma spectroscopy, Atomic physics, 010306 general physics, Spectroscopy, education, Beam (structure)
Abstract: A beam of 28 MeV He-8 particles with an average intensity 2 x 10(5) ions s(-1), produced by the SPIRAL facility at GANIL, was used to initiate fusion-evaporation reactions in thick targets of Pb-201 and Bi-209. Excited states of Po-212 and At-213 were populated in (He-8,4n) reactions. The emitted gamma-rays were detected using the EXOGAM array composed of four Compton suppressed germanium Clover detectors in a close geometry configuration. Preliminary results show that Po-212 has been populated to high spin (I similar or equal to 14) with a significantly increased yield compared with our previous He-8 beam experiment. An apparently increased relative population of states up to 12(+) was observed compared with published results from a Pb-208(Be-9,alpha n)(212) Po reaction at 48 MeV. Evidence is presented for a previously unreported de-excitation pathway: 69 keV (13(-) -> 12(+)). States up to I-pi = (39/2(-)) have also been observed in At-213.
Published: 2005

44. Merger of the DIAMANT Light Charge Particle Detector into the AFRODITE Data Acquisition System

Author: Robert Bark, Sean Murray, O. Shirinda, János Timár, L. Molnár, T. Hlatshwayo, V. F. E. Pucknell, A. Krasznahorkay, K. Juhász, B. M. Nyakó, L. Zolnai, S. M. Mullins, J. N. Scheurer, T. Malwela, J. J. Lawrie, Gábor Kalinka, F. S. Komati, J.F. Sharpey-Schafer, E. Gueorguieva, S. S. Ntshangase, J. Gál, and J. V. Pilcher
Subjects: Nuclear physics, Physics, Data acquisition, Spectrometer, Charge (physics), Detector array, Particle detector
Abstract: The Chessboard section of the DIAMANT CsI detector array has been merged into the AFRODITE γ‐ray spectrometer acquisition system. The details of the data acquisition merging is explained together with how consistency is maintained and ensured between the two distinct systems.
Published: 2005

45. The VXI electronics of the DIAMANT particle detector array

Author: J.F. Chemin, J. N. Scheurer, G. Hegyesi, J. L. Pedroza, Jozsef Molnar, V. F. E. Pucknell, B. M. Nyakó, K. Juhász, J. Gál, Gábor Kalinka, and M. M. Aléonard
Subjects: Physics, Nuclear and High Energy Physics, Signal processing, Spectrometer, business.industry, Detector, Constant fraction discriminator, Zero crossing, Particle detector, Charged particle, Optics, Figure of merit, business, Instrumentation
Abstract: A VXI card designed for the processing of signals from the particle detector array DIAMANT, a CsI(Tl) light charged particle ancillary detector system to the EUROBALL and the EXOGAM gamma-spectrometers, is described. The card provides particle energy, particle-type and time-reference information and is compatible with the existing signal-processing system of EUROBALL/EXOGAM. In order to have full compatibility with the electronics of these spectrometers without sacrificing the performance of the card, some new solutions are used in the signal processing. For particle discrimination three methods can be selected; the ballistic deficit method, the zero-crossing method and a combination of these two methods. The figure of merit of the particle discrimination using the combined method is better than that of the zero crossing or the ballistic deficit method individually. Timing signals for particle–gamma coincidence are derived by a specially designed non-delay-line constant fraction discriminator, which exhibits low rise-time-dependent walk. The card has been tested with EUROBALL. The results of these tests are presented.
Published: 2004

46. 10Beexcited states populated in the9Be(9Be,8Be)10Bereaction

Author: V. A. Ziman, V. F. E. Pucknell, N. M. Clarke, B.R. Fulton, C. J. Bickerton, C. E. Harrison, R. J. Woolliscroft, W. N. Catford, R. P. Ward, N. I. Ashwood, and Martin Freer
Subjects: Physics, Nuclear and High Energy Physics, Spins, Excited state, Energy spectrum, State (functional analysis), Atomic physics, Ground state, Excitation
Abstract: Analysis of the ${}^{9}\mathrm{Be}{(}^{9}\mathrm{Be}{,}^{8}\mathrm{Be}{)}^{10}\mathrm{Be}$ reaction at ${E}_{\mathrm{beam}}=48\mathrm{MeV}$ indicates that excited states in ${}^{10}\mathrm{Be}$ were populated up to $\ensuremath{\sim}15\mathrm{MeV}.$ Detecting coincident $\ensuremath{\alpha}$ particles allowed the excitation energy spectrum of ${}^{8}\mathrm{Be}$ to be reconstructed. By gating on either the ${}^{8}\mathrm{Be}{2}^{+}$ or ${4}^{+}$ states, information on the total magnitudes of the spins of the various states in the coincident ${}^{10}\mathrm{Be}$ nuclei was obtained. Members of the ground state ${K=0}^{+}$ and ${K=1}^{\ensuremath{-}}$ rotational bands were populated, with the excitation energies in good agreement with the previous work. In addition, a new state was identified at 13.78 MeV.
Published: 2003

47. ElectromagneticB(E2)transition strengths along the yrast negative-parity band of113I

Author: R. Menegazzo, S. Lunardi, N. Marginean, G. de Angelis, D. R. Napoli, D. Curien, A. Dewald, V. F. E. Pucknell, Roberto Isocrate, S. M. Lenzi, P. Petkov, N. Kintz, E. Farnea, C. Ring, A. Fitzler, A. Gadea, and T. Klug
Subjects: Physics, Nuclear and High Energy Physics, Excited state, Yrast, Quadrupole, Parity (physics), Atomic physics, Beam energy, Excitation, Coincidence
Abstract: The mean lifetimes of seven states in ${}^{113}\mathrm{I}$ excited via the reaction ${}^{58}\mathrm{Ni}{(}^{58}\mathrm{Ni},3p)$ at a beam energy of 210 MeV were measured for the first time by means of the recoil-distance Doppler-shift technique. The lifetimes were determined in coincidence mode within the framework of the differential decay-curve method. The quadrupole deformation derived from the $B(E2)$ values at the bottom of the negative-parity yrast band confirms the predictions of previous TRS calculations. At higher excitation energy along the yrast line, the experimental $B(E2)$ transition strengths indicate an apparent loss of collectivity with increasing spin. A three-band mixing calculation provides an overall description of these strengths.
Published: 2003

48. Octupole correlations in the 114Xe nucleus determined through linear polarization analysis with EUROBALL

Author: A. Fitzler, J.A. Sampson, A. Gadea, N. Marginean, V. F. E. Pucknell, P. Petkov, J. L. Pedroza, Ramon Wyss, G. de Angelis, R. Menegazzo, C. Ring, E. Farnea, Roberto Isocrate, M. De Poli, N. Kintz, D. Curien, P. Pavan, S. Kasemann, D. R. Napoli, A. Dewald, and T. Kluge
Subjects: Nuclear reaction, Physics, Dipole, Atomic orbital, Linear polarization, Excited state, Nuclear Theory, Neutron, Fermi surface, Physics::Atomic Physics, Atomic physics, Nuclear Experiment, Spectral line
Abstract: Octupole correlations have been suggested to be present at low and medium spin in the light Te, I and Xe nuclei. In this mass region the Fermi surface for both protons and neutrons lies between the d 5/2 and the h 11/2 orbitals. Experimentally octupole correlations have been suggested in the light Xe and Te nuclei based on electric dipole (E1) transitions linking the rotational sequences whose character has been inferred only from branching ratios and angular behaviour. Since the experimental confirmation of the electric character of these dipole transitions is paramount in order to firmly establish the octupole nature of such excitations, we have investigated at EUROBALL the linear polarization of the γ rays deexciting such nuclei. In the present work we report the linear polarization and lifetime results obtained for the 114Xe nucleus. Moreover the observation of two E3 transitions deexciting the 5− and 3− states of the octupole sequence has allowed a quantitative determination of the octupole collectivity. High-spin states in the neutron deficient nucleus 114Xe were populated using the 58Ni + 58Ni reaction at 210 MeV.
Published: 2003

49. Breakup measurements of particle unbound states in10B

Author: P. J. Leask, R. P. Ward, R. L. Cowin, Martin Freer, B. R. Fulton, S. M. Singer, D. L. Watson, N. Curtis, W. N. Catford, K. L. Jones, N. A. Orr, C. D. Freeman, V. F. E. Pucknell, and N. M. Clarke
Subjects: Nuclear physics, Physics, Nuclear and High Energy Physics, 010308 nuclear & particles physics, 0103 physical sciences, Particle, 010306 general physics, Breakup, 01 natural sciences
Published: 2001

50. SAPhIR: a fission-fragment detector

Author: Th. Ethvignot, Xavier Coppolani, Y. Le Coz, N. Karkour, M. Houry, O. Maillard, W. Korten, A. Bouillac, C. Gautherin, V. F. E. Pucknell, Ph. Legou, P. Le Bourlout, G. Carles, B. Delaitre, G. Barreau, G. Belier, A. Le Coguie, Ch. Theisen, G. Durand, G. B. L. Smith, T.P. Doan, I. Merlin, V. Méot, R. Lucas, B. Cahan, and D. Linget
Subjects: Nuclear physics, Physics, Fission products, Fission, Detector, Radiochemistry, Gamma spectroscopy, Particle detector, Semiconductor detector
Abstract: SAPhIR is the acronym for S_aclay A_quitaine P_h_otovoltaic cells for I_somer R_esearch. It consists of solar cells, used for fission-fragment detection. It is a collaboration between 3 laboratories: CEA Saclay, CENBG Bordeaux and CEA Bruyeres le Châtel. The coupling of a highly efficient fission-fragment detector like SAPhIR with EUROBALL will provide new insights in the study of very deformed nuclear matter and in the spectroscopy of neutron-rich nuclei.
Published: 1998

Catalog

Books, media, physical & digital resources

See catalog results

Searchworks

Select search scope, currently: Articles Catalog books, media & more in Jio Institute collections Articles journal articles & other e-resources

Search

Search Constraints

Refine your results

Search Limiters

Topic

Publication Year Range

Language

Journal

Database

Publisher

55 results on '"V. F. E. Pucknell"'

Search Results

Catalog

Select search scope, currently: Articles

Catalog

books, media & more in Jio Institute collections

Articles

journal articles & other e-resources