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28 results on '"P. J. Coleman-Smith"'

1. A phylogenetic approach for weighting genetic sequences

Author

Nicola De Maio, Alexander V. Alekseyenko, William J. Coleman-Smith, Fabio Pardi, Marc A. Suchard, Asif U. Tamuri, Jakub Truszkowski, and Nick Goldman

Subjects
Phylogenetics, Sequence weights, Alignment, Protein profile, Conservation scores, Computer applications to medicine. Medical informatics, R858-859.7, Biology (General), QH301-705.5
Abstract

Abstract Background Many important applications in bioinformatics, including sequence alignment and protein family profiling, employ sequence weighting schemes to mitigate the effects of non-independence of homologous sequences and under- or over-representation of certain taxa in a dataset. These schemes aim to assign high weights to sequences that are ‘novel’ compared to the others in the same dataset, and low weights to sequences that are over-represented. Results We formalise this principle by rigorously defining the evolutionary ‘novelty’ of a sequence within an alignment. This results in new sequence weights that we call ‘phylogenetic novelty scores’. These scores have various desirable properties, and we showcase their use by considering, as an example application, the inference of character frequencies at an alignment column—important, for example, in protein family profiling. We give computationally efficient algorithms for calculating our scores and, using simulations, show that they are versatile and can improve the accuracy of character frequency estimation compared to existing sequence weighting schemes. Conclusions Our phylogenetic novelty scores can be useful when an evolutionarily meaningful system for adjusting for uneven taxon sampling is desired. They have numerous possible applications, including estimation of evolutionary conservation scores and sequence logos, identification of targets in conservation biology, and improving and measuring sequence alignment accuracy.

Published
2021
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2. 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

3. 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

4. Study of decay properties for Ba to Nd nuclei relevant for the formation of the r-process rare-earth peak (A∼160)

Author

M. Pallàs, A. Tarifeño-Saldivia, G. G. Kiss, J. L. Tain, A. Tolosa-Delgado, A. Vitéz-Sveiczer, F. Calviño, J. Agramunt, P. Aguilera, A. Algora, J. M. Allmond, H. Baba, N. T. Brewer, R. Caballero-Folch, P. J. Coleman-Smith, G. Cortes, T. Davinson, I. Dillmann, C. Domingo-Pardo, A. Estrade, N. Fukuda, S. Go, C. J. Griffin, R. K. Grzywacz, O. Hall, L. J. Harkness-Brennan, T. Isobe, D. Kahl, T. T. King, A. Korgul, S. Kovács, S. Kubono, M. Labiche, J. Liu, M. Madurga, K. Miernik, F. Molina, N. Mont-Geli, A. I. Morales, E. Nácher, A. Navarro, N. Nepal, S. Nishimura, M. Piersa-Silkowska, V. Phong, B. C. Rasco, J. Romero-Barrientos, B. Rubio, K. P. Rykaczewski, Y. Saito, H. Sakurai, Y. Shimizu, M. Singh, T. Sumikama, H. Suzuki, T. N. Szegedi, H. Takeda, K. Wang, M. Wolińska-Cichocka, P. J. Woods, and R. Yokoyama

Subjects
General Medicine
Abstract

At the RIKEN Nishina Center, exotic neutron-rich isotopes of Ba, La, Ce, Pr, and Nd were measured. This work reports their half-lives (T1/2) and β-delayed neutron-emission probabilities (Pxn). The setup consisted of the BigRIPS in-flight separator for particle identification, the Advanced Implantation Detector Array (AIDA) for ions and β detection, and the BRIKEN neutron counter for neutron detection. Using this arrangement, 4 new T1/2 and 14 new P1n were measured. Furthermore, 38 T1/2 and 2 P1n values were remeasured, decreasing the uncertainties for some of them. In addition to improving predictions of nucleosynthesis models that describe the production of the rare-earth peak at A ∼ 160 via the r-process, these additional experimental data should help to constrain theoretical models for calculations of T1/2 and Pxn in this region.

Published
2023

5. Measuring the β-decay Properties of Neutron-rich Exotic Pm, Sm, Eu, and Gd Isotopes to Constrain the Nucleosynthesis Yields in the Rare-earth Region

Author

G. G. Kiss, A. Vitéz-Sveiczer, Y. Saito, A. Tarifeño-Saldivia, M. Pallas, J. L. Tain, I. Dillmann, J. Agramunt, A. Algora, C. Domingo-Pardo, A. Estrade, C. Appleton, J. M. Allmond, P. Aguilera, H. Baba, N. T. Brewer, C. Bruno, R. Caballero-Folch, F. Calvino, P. J. Coleman-Smith, G. Cortes, T. Davinson, N. Fukuda, Z. Ge, S. Go, C. J. Griffin, R. K. Grzywacz, O. Hall, A. Horváth, J. Ha, L. J. Harkness-Brennan, T. Isobe, D. Kahl, T. T. King, A. Korgul, S. Kovács, R. Krücken, S. Kubono, M. Labiche, J. Liu, J. Liang, M. Madurga, K. Miernik, F. Molina, A. I. Morales, M. R. Mumpower, E. Nacher, A. Navarro, N. Nepal, S. Nishimura, M. Piersa-Siłkowska, V. Phong, B. C. Rasco, B. Rubio, K. P. Rykaczewski, J. Romero-Barrientos, H. Sakurai, L. Sexton, Y. Shimizu, M. Singh, T. Sprouse, T. Sumikama, R. Surman, H. Suzuki, T. N. Szegedi, H. Takeda, A. Tolosa, K. Wang, M. Wolinska-Cichocka, P. Woods, R. Yokoyama, Z. Xu, Universitat Politècnica de Catalunya. Departament de Física, Universitat Politècnica de Catalunya. Doctorat en Enginyeria Nuclear i de les Radiacions Ionitzants, and Universitat Politècnica de Catalunya. ANT - Advanced Nuclear Technologies Research Group

Subjects
Física [Àrees temàtiques de la UPC], Space and Planetary Science, Astronomy and Astrophysics, Stars, Nucleosynthesis, Estels, Nucleosíntesi
Abstract

The β-delayed neutron-emission probabilities of 28 exotic neutron-rich isotopes of Pm, Sm, Eu, and Gd were measured for the first time at RIKEN Nishina Center using the Advanced Implantation Detector Array (AIDA) and the BRIKEN neutron detector array. The existing β-decay half-life (T 1/2) database was significantly increased toward more neutron-rich isotopes, and uncertainties for previously measured values were decreased. The new data not only constrain the theoretical predictions of half-lives and β-delayed neutron-emission probabilities, but also allow for probing the mechanisms of formation of the high-mass wing of the rare-earth peak located at A ≈ 160 in the r-process abundance distribution through astrophysical reaction network calculations. An uncertainty quantification of the calculated abundance patterns with the new data shows a reduction of the uncertainty in the rare-earth peak region. The newly introduced variance-based sensitivity analysis method offers valuable insight into the influence of important nuclear physics inputs on the calculated abundance patterns. The analysis has identified the half-lives of 168Sm and of several gadolinium isotopes as some of the key variables among the current experimental data to understand the remaining abundance uncertainty at A = 167–172.

Published
2022

6. 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

7. 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

8. 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

9. 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

10. Quadrupole collectivity in Ca42 from low-energy Coulomb excitation with AGATA

Author

D. Mengoni, M. Kisieliński, G. Anil Kumar, M. Kicińska-Habior, D. Karpiński, G. Lehaut, S. F. Özmen, A. Colombo, F. Recchia, R. Menegazzo, J. Iwanicki, F. Azaiez, B. Million, J. Eberth, D. M. Cullen, N. Toniolo, G. Maron, G. de Angelis, M. Krzysiek, O. Stezowski, P. Reiter, B. Birkenbach, D. T. Doherty, M. D. Salsac, P. J. Coleman-Smith, M. Kowalczyk, M. Gulmini, B. Bounthong, J. Srebrny, S. Franchoo, Hans-Jurgen E. Hess, K. Rusek, M. Ciemala, A. Obertelli, J. L. Wood, S. Leoni, H. Naïdja, C. Michelagnoli, A. Giaz, D. Bazzacco, G. Benzoni, J. Styczen, A. Gottardo, L. Berti, R. Wadsworth, E. Farnea, W. Korten, M. Komorowska, F. C. L. Crespi, Ch. Theisen, M. Kmiecik, A. Jungclaus, Megumi Niikura, D. S. Judson, K. Mazurek, S. Brambilla, B. Dulny, T. Abraham, Joël Chavas, Roberto Isocrate, F. Camera, Tomás R. Rodríguez, P. Bednarczyk, I. Stefan, A. Czermak, L. Charles, G. Jaworski, P. Désesquelles, M. Zieblinski, B. Bruyneel, B. Fornal, X. Grave, S. Lunardi, J. Grebosz, N. Kondratyev, Andreas Görgen, K. Wrzosek-Lipska, G. Rampazzo, Pär-Anders Söderström, Marco Bellato, E. Merchan, Andreas Wiens, Alessandra Corsi, T. Habermann, L. Próchniak, P. J. Napiorkowski, M. Zielińska, A. Lopez-Martens, C. A. Ur, B. Wasilewska, K. Hadynska-Klek, Begoña Quintana, D. Rosso, J. Ljungvall, E. Sahin, A. Gadea, A. Korichi, A. Maj, F. Nowacki, P. Cocconi, Alberto Pullia, Bo Cederwall, N. Karkour, Damiano Bortolato, J. J. Valiente Dobon, D. R. Napoli, W. Meczynski, N. Redon, S. Myalski, and M. Palacz

Subjects
Physics, Sideband, 010308 nuclear & particles physics, Coulomb excitation, 01 natural sciences, Matrix (mathematics), Excited state, 0103 physical sciences, Quadrupole, AGATA, Sum rule in quantum mechanics, Atomic physics, 010306 general physics, Beam (structure)
Abstract

A Coulomb-excitation experiment to study electromagnetic properties of Ca42 was performed using a 170-MeV calcium beam from the TANDEM XPU facility at INFN Laboratori Nazionali di Legnaro. γ rays from excited states in Ca42 were measured with the AGATA spectrometer. The magnitudes and relative signs of ten E2 matrix elements coupling six low-lying states in Ca42, including the diagonal E2 matrix elements of 21+ and 22+ states, were determined using the least-squares code gosia. The obtained set of reduced E2 matrix elements was analyzed using the quadrupole sum rule method and yielded overall quadrupole deformation for 01,2+ and 21,2+ states, as well as triaxiality for 01,2+ states, establishing the coexistence of a weakly deformed ground-state band and highly deformed slightly triaxial sideband in Ca42. The experimental results were compared with the state-of-the-art large-scale shell-model and beyond-mean-field calculations, which reproduce well the general picture of shape coexistence in Ca42.

Published
2018

11. 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
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12. 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

13. 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

14. 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

15. Superdeformed and Triaxial States in Ca 42

Author

G. Benzoni, Bo Cederwall, M. Komorowska, Begoña Quintana, D. Rosso, J. Styczen, Damiano Bortolato, J. J. Valiente Dobon, P. Bednarczyk, L. Charles, M. Ziȩbliński, W. Korten, R. Nicolini, L. Próchniak, P. Reiter, D. R. Napoli, T. Habermann, A. Maj, A. Gottardo, L. Berti, A. Lopez-Martens, G. Rampazzo, J. L. Wood, F. Nowacki, P. J. Coleman-Smith, C. Michelagnoli, B. Bounthong, S. Franchoo, P. Cocconi, T. Abraham, J. Ljungvall, Marco Bellato, M. Kicińska-Habior, P. Désesquelles, G. Anil Kumar, J. Mierzejewski, N. Kondratyev, K. Hadyńska-Klȩk, A. Korichi, P. A. Söderström, E. Sahin, Agnese Giaz, M. Kisieliński, F. Recchia, Benedicte Million, X. Grave, A. Gadea, N. Toniolo, S. F. Özmen, G. Maron, O. Stezowski, D. Karpiński, E. Farnea, S. Lunardi, S. Leoni, H. Naïdja, M. Palacz, J. Srebrny, D. Bazzacco, J. Iwanicki, F. Azaiez, B. Dulny, Joël Chavas, Roberto Isocrate, Alberto Pullia, G. Jaworski, P. J. Napiorkowski, J. Eberth, M. Gulmini, M. Kmiecik, Megumi Niikura, G. de Angelis, V. Vandone, M. Krzysiek, N. Karkour, F. C. L. Crespi, I. Stefan, B. Bruyneel, Ch. Theisen, M. Ciemala, A. Obertelli, M. Zielinska, Andrea Corsi, D. M. Cullen, B. Fornal, R. Menegazzo, C. A. Ur, K. Rusek, R. Wadsworth, A. Colombo, S. Myalski, G. Lehaut, A. Jungclaus, M. Kowalczyk, A. Czermak, W. Mȩczyński, B. Birkenbach, D. T. Doherty, M. D. Salsac, D. S. Judson, K. Mazurek, J. Grȩbosz, D. Mengoni, Tomás R. Rodríguez, B. Wasilewska, S. Brambilla, F. Camera, Andreas Görgen, E. Merchan, Andreas Wiens, K. Wrzosek-Lipska, Herbert Hess, N. Redon, European Commission, Federal Ministry of Education and Research (Germany), National Science Centre (Poland), Generalitat Valenciana, Nuclear Astrophysics Virtual Institute (Germany), Helmholtz Association, Ministerio de Economía y Competitividad (España), Research Council of Norway, Laboratori Nazionali di Legnaro, Helmholtz Centre for Heavy Ion Research, and University of Warsaw

Subjects
Physics, Sideband, 010308 nuclear & particles physics, SHELL model, Nuclear Theory, General Physics and Astronomy, Coulomb excitation, 7. Clean energy, 01 natural sciences, Superdeformation, Matrix (mathematics), Physics and Astronomy (all), 0103 physical sciences, AGATA, Atomic physics, 010306 general physics
Abstract

K. Hadyńska-Kl¸ek et al. ; 7 pags., 3 figs., 2 tabs., Shape parameters of a weakly deformed ground-state band and highly deformed slightly triaxial sideband in Ca42 were determined from E2 matrix elements measured in the first low-energy Coulomb excitation experiment performed with AGATA. The picture of two coexisting structures is well reproduced by new state-of-the-art large-scale shell model and beyond-mean-field calculations. Experimental evidence for superdeformation of the band built on 02+ has been obtained and the role of triaxiality in the A∼40 mass region is discussed. Furthermore, the potential of Coulomb excitation as a tool to study superdeformation has been demonstrated for the first time. © 2016 American Physical Society, Special gratitude goes to the INFN LNL and HIL Warsaw technical staff for their support and help, in particular, the accelerator crews for providing intense and good-quality 42Ca and 32S beams. K. H.-K. acknowledges support from the Research Council of Norway under the project Grant No. 213442. T. R. R. acknowledges computing time at GSI-Darmstadt and support from Spanish MINECO under Programa Ramon y Cajal 11420 and FIS-2014-53434-P, H. N. acknowledges support from Helmholtz Association through the Nuclear Astrophysics Virtual Institute NAVI (No. VH-VI-417). We also acknowledge the support by Generalitat Valenciana, Spain, under the grant PROMETEOII/2014/019 and by the FEDER funds of the European Commission (A. Gadea), Spanish Ministerio de Economía y Competitividad under Contract No. FPA2014-57196-C5 (A. J., A. Gadea), German Bundesministerium für Bildung und Forschung (BMBF) under Contract No. 05P12PKFNE TP4 (B. Birkenbach), the Polish National Science Centre under Projects No. DEC-2013/10/M/ST2/00427, No. DPN/N190/ AGATA/2009, No. 2011/03/B/ST2/01894, No. UMO- 2014/14/M/ST2/00738 (COPIN-INFN Collaboration), and No. 2015/17/B/ST2/01534.

Published
2016

16. 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

17. 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

18. 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

19. 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

20. 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
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21. Identification of excited states in theTz=+12nucleus75Rb:The quest for experimental signatures of collective neutron-proton correlations

Author

J. Alexander, C. Baktash, D. G. Sarantites, Carl J Gross, W. Gelletly, D. D. Warner, J. Simpson, H. A. Roth, B. J. Varley, I.H. Lazarus, P. J. Coleman-Smith, Ö. Skeppstedt, K. P. Lieb, Dirk Rudolph, W. Satula, A. Harder, D. M. Cullen, R. A. Cunningham, J. A. Sheikh, M. K. Kabadiyski, and J. D. Garrett

Subjects
Physics, Nuclear and High Energy Physics, Decay scheme, Proton, 010308 nuclear & particles physics, Nuclear Theory, Gamma ray, 01 natural sciences, 7. Clean energy, Omega, Nuclear physics, Pairing, Excited state, 0103 physical sciences, Neutron, Atomic physics, Nuclear Experiment, 010306 general physics, Ground state
Abstract

Excited states in the T-z-1/2 nucleus Rb-75 were observed for the first time using the Ca-40(Ca-40,alpha p) reaction at 128 MeV. Identification was achieved using events detected by the Daresbury recoil separator in coincidence with gamma rays detected in the 45 element EUROGAM I Ge-detector array. Threefold events were used to build a decay scheme which consists of two rotational bands observed to I-pi=(45+/2) and I-pi=(33-/2). The positive parity band in Rb-75 behaves similarly to a negative-parity band in Kr-74 and contains a region of alignment at (h) over bar omega approximate to 0.75 MeV. These data, and those of Sr-77, be interpreted by treating protons and neutrons separately in a cranked shell model approach despite a recent suggestion for the presence of T=1 neutron-proton pairing correlations in the neighboring self-conjugate, odd-odd Rb-74 ground state band. Our study suggests that some experimental observables such as the energy levels and moments of inertia, may not be able to differentiate between different T=1 pairing phases in these T-z=1/2 nuclei. (Less)

Published
1997

22. Global properties ofKhindrance probed by theγdecay of the warm rotating174W nucleus

Author

Luna Pellegri, C. A. Ur, B. Million, O. Stezowski, V. Vandone, J. Grebosz, R. Menegazzo, A. Kaşkaş, F. Camera, A. Atac, S. Lunardi, A. Giaz, D. Mengoni, C. Michelagnoli, D. Montanari, D. S. Judson, Andreas Görgen, Herbert Hess, B. Birkenbach, P. Reiter, J. J. Valiente-Dobón, D. R. Napoli, Enrico Calore, S. Leoni, S. Brambilla, P. J. Coleman-Smith, G. de Angelis, E. Sahin, M. D. Salsac, R. Nicolini, E. Vigezzi, A. Gottardo, A. Obertelli, F. Recchia, Alberto Pullia, N. Karkour, F. C. L. Crespi, M. Matsuo, P. A. Söderström, P. J. Nolan, Bo Cederwall, Serkan Akkoyun, A. Jungclaus, D. Bazzacco, T. Hüyük, Damiano Bortolato, A. Gadea, M. Kmiecik, D. Rosso, E. Farnea, Ch. Theisen, Andrea Corsi, D. M. Cullen, P. Désesquelles, Marco Bellato, A. Maj, A. Bracco, G. Benzoni, S. Bottoni, N. Blasi, G. Maron, P. Molini, O. Wieland, J. Eberth, N. Cieplicka, and C. Boiano

Subjects
Physics, Nuclear and High Energy Physics, 010308 nuclear & particles physics, Gamma ray, Quantum number, 01 natural sciences, Excited state, 0103 physical sciences, Nuclear fusion, AGATA, Atomic physics, Multiplicity (chemistry), 010306 general physics, Mixing (physics), Excitation
Abstract

The K hindrance to the gamma decay is studied in the warm rotating W-174 nucleus, focusing on the weakening of the selection rules of the K quantum number with increasing excitation energy. W-174 was populated by the fusion reaction of Ti-50 (at 217 MeV) on a Te-128 target, and its gamma decay was detected by the AGATA Demonstrator array coupled to a BaF2 multiplicity filter at Laboratori Nazionali di Legnaro of INFN. A fluctuation analysis of gamma coincidence matrices gives a similar number of low-K and high-K discrete excited bands. The results are compared to simulations of the gamma-decay flow based on a microscopic cranked shell model at finite temperature in which the K mixing is governed by the interplay of Coriolis force with the residual interaction. Agreement between simulations and experiment is obtained only by hindering the E1 decay between low-K and high-K bands by an amount compatible with that determined by spectroscopic studies of K isomers in the same mass region, with a similar trend with excitation energy. The work indicates that K mixing due to temperature effects may play a leading role for the entire body of discrete excited bands, which probes the onset region of K weakening.

Published
2013

23. Collective nature of low-lying excitations in70,72,74Zn from lifetime measurements using the AGATA spectrometer demonstrator

Author

C. Louchart, A. Obertelli, A. Görgen, W. Korten, D. Bazzacco, B. Birkenbach, B. Bruyneel, E. Clément, P. J. Coleman-Smith, L. Corradi, D. Curien, G. de Angelis, G. de France, J.-P. Delaroche, A. Dewald, F. Didierjean, M. Doncel, G. Duchêne, J. Eberth, M. N. Erduran, E. Farnea, C. Finck, E. Fioretto, C. Fransen, A. Gadea, M. Girod, A. Gottardo, J. Grebosz, T. Habermann, M. Hackstein, T. Huyuk, J. Jolie, D. Judson, A. Jungclaus, N. Karkour, S. Klupp, R. Krücken, A. Kusoglu, S. M. Lenzi, J. Libert, J. Ljungvall, S. Lunardi, G. Maron, R. Menegazzo, D. Mengoni, C. Michelagnoli, B. Million, P. Molini, O. Möller, G. Montagnoli, D. Montanari, D. R. Napoli, R. Orlandi, G. Pollarolo, A. Prieto, A. Pullia, B. Quintana, F. Recchia, P. Reiter, D. Rosso, W. Rother, E. Sahin, M.-D. Salsac, F. Scarlassara, M. Schlarb, S. Siem, P. P. Singh, P.-A. Söderström, A. M. Stefanini, O. Stézowski, B. Sulignano, S. Szilner, Ch. Theisen, C. A. Ur, J. J. Valiente-Dobón, and M. Zielinska

Subjects
Nuclear physics, Physics, Nuclear and High Energy Physics, Spectrometer, 010308 nuclear & particles physics, 0103 physical sciences, media_common.cataloged_instance, AGATA, European union, 010306 general physics, 01 natural sciences, media_common
Abstract

This work has been partly financed by the European Union Seventh Framework Program FP7/2007-2013 under Grant Agreement No. 262010 ENSAR, the Polish MNiSW under Grant No. DPN/N190/AGATA/2009, the Spanish Ministerio de Ciencia e Innovacion under Contract No. FPA2011-29854-C04, and ´ the BMBF under Grant Nos. 05P12RDFN8 and 06DA9040I.

Published
2013

24. 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

25. 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

27. 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

28. Towards the Determination of Superdeformation in 42Ca

Author

M. Zielińska, A. Lopez-Martens, C. A. Ur, B. Birkenbach, B. Wasilewska, K. Hadynska-Klek, F. Camera, A. Korichi, J. J. Valiente-Dobón, M. Zieblinski, J. Eberth, M. Gulmini, A. Colombo, F. Recchia, P. Bednarczyk, A. Pullia, J. Grebosz, B. Fornal, M. D. Salsac, W. Korten, D. Mengoni, Andrea Corsi, D. M. Cullen, S. Leoni, F. C. L. Crespi, D. R. Napoli, K. Wrzosek-Lipska, J. Mierzejewski, N. Kondratyev, O. Stezowski, Agnese Giaz, G. de Angelis, R. Wadsworth, M. Krzysiek, A. Gottardo, L. Berti, J. Styczen, M. Ciemala, S. Brambilla, D. Karpiński, A. Obertelli, V. Vandone, Marco Bellato, J. Iwanicki, E. Farnea, Ch. Theisen, F. Azaiez, D. Bazzacco, T. Abraham, P. Désesquelles, X. Grave, S. Lunardi, T. Habermann, B.-Q. Arnés, M. Kmiecik, Damiano Bortolato, Megumi Niikura, B. Million, I. Stefan, M. Kisieliński, A. Jungclaus, G. Anil Kumar, S. Myalski, P. Reiter, Joël Chavas, Roberto Isocrate, E. Merchan, C. Michelagnoli, Andreas Wiens, J. Srebrny, M. Palacz, P. J. Napiorkowski, G. Lehaut, A. Czermak, K. Rusek, S. Franchoo, B. Bruyneel, P. J. Coleman-Smith, M. Kowalczyk, P. Molini, G. Maron, K. Mazurek, B. Dulny, M. Komorowska, G. Jaworski, N. Karkour, R. Menegazzo, G. Benzoni, W. Meczynski, N. Redon, N. Toniolo, G. Rampazzo, A. Gadea, P. Cocconi, R. Nicolini, M. Kicińska-Habior, P. A. Söderström, S. F. Özmen, A. Maj, D. Rosso, and E. Sahin

Subjects
Physics, Focus (computing), 010308 nuclear & particles physics, Nuclear Theory, General Physics and Astronomy, Coulomb excitation, 01 natural sciences, Nuclear physics, Superdeformation, medicine.anatomical_structure, 0103 physical sciences, medicine, Atomic physics, Nuclear Experiment, 010306 general physics, Nucleus
Abstract

The Coulomb excitation experiment to study electromagnetic structure of low-lying states in Ca-42 with a focus on a possible superdeformation in this nucleus was performed at the Laboratori Naziona ...

Published
2013

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