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343 results on '"Ur C.A"'

1. Lifetime measurement in neutron-rich A~100 nuclei

Author

Ansari S., Régis J-M., Jolie J., Saed-Samii N., Warr N., Korten W., Zielińska M., Salsac M.-D., Blanc A., Jentschel M., Köster U., Mutti P., Soldner T., Simpson G.S., Drouet F., Vancraeyenest A., de France G., Clément E., Stezowski O., Ur C.A., Urban W., Regan P.H., Podolyák Zs., Larijani C., Townsley C., Carroll R., Wilson E., Mach H., Fraile L.M., Paziy V., Olaizola B., Vedia V., Bruce A.M., Roberts O.J., Smith J.F., Scheck M., Kröll T., Hartig A.-L., Ignatov A., Ilieva S., Lalkovski S., Mărginean N., Otsuka T., Shimizu N., Togashi T., and Tsunoda Y.

Subjects
Physics, QC1-999
Abstract

Lifetimes of excited states of the 98;100;102Zr nuclei were measured by using the Generalized Centroid Difference Method. The nuclei of interest were populated via neutron-induced fission of 241Pu and 235U during the EXILL-FATIMA campaign. The obtained lifetimes were used to calculate the B(E2) transition strengths and β deformation parameters which were then compared with the recent theoretical predictions obtained with Monte Carlo Shell Model.

Published
2018
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2. The γ-γ fast-timing technique and the EXILL&FATIMA campaign

Author

Régis J.-M., Simpson G.S., Mach H., Blanc A., Jentschel M., Köster U., Mutti P., Soldner T., de France G., Ur C.A., Urban W., Jolie J., Saed-Samii N., Warr N., Fraile L.M., Paziy V., Regan P.H., Podolyák Zs., Lalkovski S., Bruce A.M., Kröll T., Korten W., and Marginean N.

Subjects
Physics, QC1-999
Abstract

At the Institut Laue-Langevin in Grenoble, germanium-gated γ-γ fast-timing lifetime measurements of nuclear excited states in neutron-rich nuclei have been performed within a prompt γ-ray spectroscopy experimental campaign. We report on results obtained from the cold-neutron induced fission of 235U. The excited secondary fission products were stopped almost instantaneously within the thick target and the γ rays emitted were collected triggerlessly using the EXILL&FATIMA mixed array of HPGe and LaBr3(Ce) detectors. Precise lifetimes could be determined by analysing the γ-γ time difference spectra using the generalized centroid difference method. This picosecondsensitive method provides many advantages and is briefly explained. Still, the major source of systematic errors is related to the contribution of time-correlated Compton background. The EXILL&FATIMA results are discussed with respect to the typical energy-dependent timing behaviour of the background. According to the time response of the background, appropriate methods and a time correction for the sub-nanosecond regime are proposed.

Published
2018
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3. (n,γ) reactions on rare Ca isotopes: Valence-hole - core excitation couplings in 47Ca

Author

Bottoni S., Cieplicka-Oryńczak N., Bocchi G., Leoni S., Fornal B., Colò G., Bortignon P.F., Benzoni G., Blanc A., Bracco A., Crespi F.C.L., Jentschel M., Köster U., Michelagnoli C., Million B., Mutti P., Soldner T., Türler A., Ur C.A., and Urban W.

Subjects
Physics, QC1-999
Abstract

Recent results on the structure of 47Ca will be presented. The nucleus of interest was populated via the cold-neutron capture 46Ca(n,γ) reaction, on a rare 46Ca target, during the EXILL experimental campaign at the nuclear reactor of Institut Laue- Langevin in Grenoble. High-resolution γ-ray spectroscopy, performed with a composite array of HPGe detectors, enabled the identification of new transitions deexciting states between the neutron-capture level and the ground state. Experimental data will be compared with a novel microscopic theoretical model, currently under development, specifically designed to describe the low-lying structure of odd-mass nuclei with one valence particle/hole outside a spherical doubly-magic core, using the Skyrme effective interaction self-consistently.

Published
2018
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4. Excited States and Collectivity in 88Se

Author

Simpson G., Grachev I., Thiamova G., Ramdhane M., Sieja K., Blanc A., Jentschel M., Köster U., Mutti P., Soldner T., de France G., Ur C.A., and Urban W.

Subjects
Physics, QC1-999
Abstract

The γ decays of excited states in the very neutron-rich nucleus 88Se have been observed following the cold neutron-induced fission of 235U at the PF1B facility of the Institut Laue-Langevin (ILL), Grenoble. The EXILL array was used to measure γ - γ - γ coincidences, which were then analysed to build a level scheme of 88Se. A low (2+1) energy hints at the onset of quadrupole deformation and the identification of possible members of a (2+2) band provide evidence for γ vibrations. Shell-model calculations using a 78Ni core reproduce the experimental decay scheme well, implying that interactions between particles in the π f5/2 p and vsd orbits are responsible for much of the collectivity present. The algebraic collective model has also been used to interpret the experimental data, showing that that the experimental spectrum is consistent with 88Se being a transitional nucleus, possessing weak static β deformation and γ instability.

Published
2018
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5. Study of the population of neutron-rich heavy nuclei in the A~200 mass region via multinucleon transfer reactions

Author

Fioretto E., Corradi L., Galtarossa F., Szilner S., Montanari D., Mijatović T., Pollarolo G., Jia H.M., Ackermann D., Bourgin D., Colucci G., Courtin S., Fruet G., Goasduff A., Grebosz J., Haas F., Jelavić Malenica D., Jeong S.C., John P.R., Milin M., Montagnoli G., Skukan N., Scarlassara F., Soić N., Stefanini A.M., Strano E., Tokić V., Ur C.A, Valiente-Dobón J.J., and Watanabe Y.X.

Subjects
Physics, QC1-999
Abstract

Multineutron and multiproton transfer channels, populated in the inverse kinematics reaction 197Au+130Te at Elab=1.07 GeV, were measured at Laboratori Nazionali di Legnaro using the presently heaviest ion beam delivered by the PIAVE-ALPI accelerator complex and detecting both projectile-like and targetlike ions. To this end the large solid angle magnetic spectrometer PRISMA was coupled to a second arm for the detection of the heavy fragments in kinematic coincidence with the light ones selected and identified with the spectrometer. The data analysis is still in progress and will allow to compare the yields of both light and heavy partner with theoretical predictions performed with the GRAZING code to get quantitative information on transfer channels and the effect of evaporation and fission on the production rate of primary fragments. The mass integrated Z distribution, extracted from the experimental data, evidenced the population of proton pickup channels that, in conjunction with the neutron stripping ones from the 130Te, open the path for the production of neutron-rich heavy nuclei. In the following, we will present some preliminary results as well as details on the experimental configuration and perspectives for future investigations in the neutron-rich heavy region.

Published
2017
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7. g-factor measurements of isomeric states in 174W

Author

Rocchini M., Nannini A., Benzoni G., Melon B., John P.R., Ur C.A., Avigo R., Bazzacco D., Blasi N., Bocchi G., Bottoni S., Bracco A., Camera F., Ceruti S., Crespi F.C.L., Georgiev G., Giaz A., Gottardo A., Leoni S., Menegazzo R., Mengoni D., Michelagnoli C., Million B., Modamio V., Morales A.I., Napoli D.R., Ottanelli M., Pellegri L., Perego A., Valiente-Dobon J.J., and Wieland O.

Subjects
Physics, QC1-999
Abstract

The experimental setup GAMIPE used for gyro magnetic factor measurements at Laboratori Nazionali di Legnaro and a recent experimental work regarding K-isomers in 174W are described. Aim of the experiment is to study the detailed structure of the isomeric states wave functions, by the measurement of the magnetic dipole moments. This piece of information can provide interesting hints for theoretical models. Preliminary results concerning the population of the isomers of interest and half-lives are presented.

Published
2016
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8. The Generalized Centroid Difference method for lifetime measurements via γ-γ coincidences using large fast-timing arrays

Author

Régis J.-M., Jolie J., Mach H., Simpson G.S., Blazhev A., Pascovici G., Pfeiffer M., Rudigier M., Saed-Samii N., Warr N., Blanc A., de France G., Jentschel M., Köster U., Mutti P., Soldner T., Ur C.A., Urban W., Bruce A.M., Drouet F., Fraile L.M., Ilieva S., Korten W., Kröll T., Lalkovski S., Mărginean S., Paziy V., Podolyák Zs., Regan P.H., Stezowski O., and Vancraeyenest A.

Subjects
Physics, QC1-999
Abstract

A novel method for direct electronic “fast-timing” lifetime measurements of nuclear excited states via γ-γ coincidences using an array equipped with N very fast high-resolution LaBr3(Ce) scintillator detectors is presented. The generalized centroid difference method provides two independent “start” and “stop” time spectra obtained without any correction by a superposition of the N(N – 1)/2 calibrated γ-γ time difference spectra of the N detector fast-timing system. The two fast-timing array time spectra correspond to a forward and reverse gating of a specific γ-γ cascade and the centroid difference as the time shift between the centroids of the two time spectra provides a picosecond-sensitive mirror-symmetric observable of the set-up. The energydependent mean prompt response difference between the start and stop events is calibrated and used as a single correction for lifetime determination. These combined fast-timing array mean γ-γ zero-time responses can be determined for 40 keV < Eγ < 1.4 MeV with a precision better than 10 ps using a 152Eu γ-ray source. The new method is described with examples of (n,γ) and (n,f,γ) experiments performed at the intense cold-neutron beam facility PF1B of the Institut Laue-Langevin in Grenoble, France, using 16 LaBr3(Ce) detectors within the EXILL&FATIMA campaign in 2013. The results are discussed with respect to possible systematic errors induced by background contributions.

Published
2015
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9. High precision γ spectroscopy of 69,71Zn from (n, γ) reactions using EXILL

Author

Bączyk P., Czerwiński M., Korgul A., Rząca-Urban T., Urban W., Blanc A., Jentschel M., Mutti P., Köster U., Soldner T., de France G., Simpson G., and Ur C.A.

Subjects
Physics, QC1-999
Abstract

Measurement of γ radiation following slow neutron capture on 68Zn and 70Zn using very efficient germanium array EXILL was done at Institute Laue-Langevin in Grenoble. New spectroscopic information for 69Zn (including doorway state) and first results for 71Zn (accurate energy of β decaying isomer) were obtained. Binding energies for 68Zn, 69Zn and 71Zn were determined with 5-to-70 times higher accuracy than presented in the literature.

Published
2015
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10. Transfer probability measurements in the superfluid 116Sn+60Ni system

Author

Montanari D., Corradi L., Szilner S., Pollarolo G., Fioretto E., Stefanini A.M., Farnea E., Michelagnoli C., Montagnoli G., Scarlassara F., Ur C.A., Courtin S., Goasduff A., Haas F., Mijatović T., and Soić N.

Subjects
Physics, QC1-999
Abstract

We measured excitation functions for the main transfer channels in the 116Sn+60Ni reaction from above to well below the Coulomb barrier. The experiment has been performed in inverse kinematics, detecting the lighter (target-like) ions with the magnetic spectrometer PRISMA at very forward angles. The comparison between the data and microscopic calculations for the present case and for the previously measured 96Zr+40Ca system, namely superfluid and near closed shells nuclei, should significantly improve our understanding of nucleon-nucleon correlation properties in multinucleon transfer processes.

Published
2014
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11. Study of shape transition in the neutron-rich Os isotopes

Author

John P.R., Modamio V., Valiente-Dobón J.J., Mengoni D., Gottardo A., Bazzacco D., Lunardi S., Alexander T., Angelis G. de, Ashwood N., Barr M., Bizzeti P.G., Bizzeti-Sona A.M., Bottoni S., Bowry M., Bracco A., Browne F., Bunce M., Gadea A., Camera F., Corradi L., Crespi F.C.L., Farnea E., Fioretto E., Kokalova Tz., Korten W., Kuşoğlu A., Lenzi S., Leoni S., Michelagnoli C., Mijatović T., Montagnoli G., Montanari D., Napoli D.R., Podolyák Zs., Pollarolo G., Recchia F., Roberts O.J., Şahin E., Salsac M.-D., Scarlassara F., Stefanini A.M., Szilner S., Ur C.A., Walshe J., and Wheldon C.

Subjects
Physics, QC1-999
Abstract

The neutron-rich isotopes of tungsten, osmium and platinum have different shapes in their ground states and present also shape transitions phenomena. Spectroscopic information for these nuclei is scarce and often limited to the gamma rays from the decay of isomeric states. For the neutron-rich even-even osmium isotopes 194Os and 198Os, a shape transition between a slightly prolate deformed to an oblate deformed ground state was deduced from the observed level schemes. For the even-even nucleus lying in between, 196Os, no gamma ray transition is known. In order to elucidate the shape transition and to test the nuclear models describing it, this region was investigated through gamma-ray spectroscopy using the AGATA demonstrator and the large acceptance heavy-ion spectrometer PRISMA at LNL, Italy. A two-nucleon transfer from a 198Pt target to a stable 82Se beam was utilized to populate medium-high spin states of 196Os. The analysis method and preliminary results, including the first life-time measurement of isomeric states with AGATA, are presented.

Published
2014
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12. Search for particle–vibration coupling in 65Cu

Author

Bocchi Giovanni, Leoni S., Bracco A., Bottoni S., Benzoni G., Coló G., Bortignon P. F., Mǎrginean N., Bucurescu D., Cǎta-Danil Gh., Cǎta-Danil I., Deleanu D., Filipescu D., Gheorghe I., Ghiţǎ D.G., Glodariu T., Licǎ R., Mihai C., Mǎrginean R., Negreţ A., Nitǎ C. R., Sava T., Stroe L., Şuvǎilǎ R., and Ur C.A.

Subjects
Physics, QC1-999
Abstract

The lifetime of the 9/2+ state of 65Cu, at 2534 keV, has been measured by fast timing techniques, in order to establish wether such state arises from a weak coupling between a p3/2 proton and the 3− octupole vibration at 3.56 MeV in the 64Ni core. The 65Cu nucleus was populated by the reaction 7Li + 64Ni at 32 MeV, at the Horia Hulubei National Institute of Physics and Nuclear Engineering (NIPNE) in Bucharest, and its γ-decay was detected by the ROSPHERE array. The measured lifetime coresponds to a B(E3) reduced transition probability to the ground state equal to 8.89 W.u., in agreement with theoretical predictions in the weak coupling limit.

Published
2014
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13. New Isomers in the Neutron-Rich Region Beyond 208Pb

Author

Gottardo A., Valiente-Dobón J.J., Benzoni G., Gadea A., Lunardi S., Boutachkov P., Bruce A.M., Górska M., Grebosz J., Pietri S., Podolyák Zs., Pfützner M., Regan P.H., Weick H., Núñez J. Alcántara, Algora A., Al-Dahan N., Angelis G. de, Ayyad Y., Alkhomashi N., Allegro P.R.P., Bazzacco D., Benlliure J., Bowry M., Bracco A., Bunce M., Camera F., Casarejos E., Cortes M.L., Crespi F.C.L., Corsi A., Bacelar A.M. Denis, Deo A.Y., Domingo-Pardo C., Doncel M., Dombradi Zs., Engert T., Eppinger K., Farrelly G.F., Farinon F., Farnea E., Geissel H., Gerl J., Goel N., Gregor E., Habermann T., Hoischen R., Janik R., John P. R., Klupp S., Kojouharov I., Kurz N., Lenzi S.M., Leoni S., Mandal S., Menegazzo R., Mengoni D., Million B., Modamio V., Morales A.I., Napoli D.R., Naqvi F., Nicolini R., Nociforo C., Prochazka A., Prokopowicz W., Recchia F., Ribas R.V., Reed M.W., Rudolph D., Sahin E., Schaffner H., Sharma A., Sitar B., Siwal D., Steiger K., Strmen P., Swan T.P.D., Szarka I., Ur C.A., Walker P.M., Wieland O., and Wollersheim H-J.

Subjects
Physics, QC1-999
Abstract

The region of neutron-rich nuclei beyond 208Pb has been very difficult to explore due to its high mass and exoticity. However, recent experimental improvements allowed one to perform a quite extended isomer decay spectroscopy of these nuclei.

Published
2014
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14. Spectroscopy of neutron rich nuclei using cold neutron induced fission of actinide targets at the ILL: the EXILL campaign

Author

de France G., Blanc A., Drouet F., Jentschel M., Köster U., Mutti P., Régis J.M., Simpson G., Soldner T., Stezowski O., Ur C.A., Urban W., and Vancrayenest A.

Subjects
Physics, QC1-999
Abstract

A combination of germanium detectors has been installed at the PF1B neutron guide of the ILL to perform the prompt spectroscopy of neutron-rich nuclei produced in the neutron-capture induced-fission of 235U and 241Pu. In addition LaBr3 detectors from the FATIMA collaboration have been installed in complement with the EXOGAM clovers to measure lifetimes of low-lying excited states. The measured characteristics and online spectra indicate very good performances of the overall setup.

Published
2014
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15. Fusion of 28Si + 28Si: oscillations above the barrier and the behavior down to 1μb

Author

Stefanini A.M., Montagnoli G., Corradi L., Courtin S., Fioretto E., Grebosz J., Haas F., Jia H.M., Mazzocco M., Michelagnoli C., Mijatović T., Montanari D., Parascandolo C., Scarlassara F., Strano E., Szilner S., Torresi D., and Ur C.A.

Subjects
Physics, QC1-999
Abstract

Fusion excitation functions of light heavy-ion systems show oscillatory structures above the Coulomb barrier, caused by resonances or due to the penetration of successive centrifugal barriers well separated in energy. In heavier systems, the amplitude of oscillations decreases and the peaks get nearer to each other. This makes the measurements very challenging. We have performed a first experiment for 28Si + 28Si, by measuring fusion cross sections (σ) in an energy range of ≃15 MeV above the barrier, with a small ΔElab = 0.5 MeV step. Three regular oscillations are clearly observed, which are best revealed by plotting the energy-weighted derivative of the excitation function. The excitation function has been recently measured down to cross sections ≤1μb with larger energy steps. Coupled-channel (CC) calculations based on a shallow potential in the entrance channel are able to reproduce the oscillations. A further analysis will provide a stringent test for the calculations, in particular for the choice of the ion-ion potential, because the subbarrier excitation function has to be reproduced as well. Coupled-channel (CC) calculations based on a shallow potential in the entrance channel are able to reproduce the oscillations. A further analysis will provide a stringent test for the calculations, in particular for the choice of the ion-ion potential, because the subbarrier excitation function has to be reproduced as well.

Published
2014
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16. Heavy-ion transfer reactions at large internuclear distances using the PRISMA magnetic spectrometer

Author

Montanari D. J., Corradi L., Szilner S., Pollarolo G., Fioretto E., Stefanini A.M., Farnea E., Michelagnoli C., Montagnoli G., Scarlassara F., Ur C.A., Courtin S., Goasduff A., Haas F., Mijatović T., and Soić N.

Subjects
Physics, QC1-999
Abstract

We measured excitation functions for the main transfer channels in the 116Sn+60Ni reaction at different bombarding energies from above to well below the Coulomb barrier. The experiment has been performed in inverse kinematics, detecting the lighter (target-like) ions with the magnetic spectrometer PRISMA at very forward angles. Good mass, nuclear charge and kinetic energy resolutions have been achieved. The comparison between the data and microscopic calculations for the present case and for the previously measured 96Zr+40Ca system, namely superfluid and near closed shells nuclei, should significantly improve our understanding of nucleon-nucleon correlation properties in multinucleon transfer processes.

Published
2013
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17. γ-ray spectroscopy of fission fragments from the cold-neutron 235U induced fission with EXILL

Author

Konstantinopoulos T., Astier A., Petrache C., Abudra A., Bontemps R., Deloncle I., Kaim S., Leguillon R., Porquet M.-G., Zerrouki T., Grente L., Salsac M.-D., Zielinska M., France G. de, Janas Z., Karny M., Korgul A., Ramdhane M., Gey G., Simpson G., Vancraeyenest A., Blanc A., Jentschel M., Köster U., Mutti P., Soldner T., Urban W., Duchêne G., Lozeva R., Ibrahim F., Gargano A., Covello A., Mengoni D., Ur C.A., Sferrazza M., and Melon B.

Subjects
Physics, QC1-999
Abstract

A cold neutron induced fission experiment recently took place at the Institute Laue-Langevin (ILL) in Grenoble. The neutron beam was provided by the nuclear reactor facility at ILL and the detector setup that was used for the γ-spectroscopy of the fission products consisted mainly of the detectors of the EXOGAM array [1], thereby the name of the campaign is EXILL. The main purpose of our measurement was to investigate the nuclei in the region with N = 50 close to 78Ni as well as the nuclei close to the N = 82 shell closure. In this paper, the motivation of the experiment is described as well as the experimental setup and the status of the ongoing data analysis.

Published
2013
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18. Spectroscopy of neutron rich nuclei using cold neutron induced fission of actinide targets at the ILL: The EXILL campaign

Author

Blanc A., de France G., Drouet F., Jentschel M., Köster U., Mancuso C., Mutti P., Régis J.M., Simpson G., Soldner T., Ur C.A., Urban W., and Vancraeyenest A.

Subjects
Physics, QC1-999
Abstract

One way to explore exotic nuclei is to study their structure by performing γ-ray spectroscopy. At the ILL, we exploit a high neutron flux reactor to induce the cold fission of actinide targets. In this process, fission products that cannot be accessed using standard spontaneous fission sources are produced with a yield allowing their detailed study using high resolution γ-ray spectroscopy. This is what was pursued at the ILL with the EXILL (for EXOGAM at the ILL) campaign. In the present work, the EXILL setup and performance will be presented.

Published
2013
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19. Pair transfer processes probed at deep sub barrier energies

Author

Scarlassara F., Montanari D., Montagnoli G., Michelagnoli C., Mărginean N., Jelavić-Malenica D., Gadea A., Haas F., Fioretto E., Farnea E., Mason P., Szilner S., Pollarolo G., Corradi L., Soić N., Stefanini A.M., Ur C.A., and Valiente-Dobón J.J.

Subjects
Physics, QC1-999
Abstract

Multinucleon transfer cross sections in the system 40Ca+96Zr have been measured at bombarding energies ranging from the Coulomb barrier to ~ 25% below. Target-like (lighter) recoils in inverse kinematics have been completely identif ed in A,Z and Q-value with the large solid angle magnetic spectrometer PRISMA. The experimental slopes of the neutron transfer probabilities at large internuclear separation are consistent with the values derived from the binding energies. A phenomenological interpretation of the transfer probabilities indicates the presence of enhanced values for the even number of neutron transfers.

Published
2011
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20. Quasi-elastic reactions: an interplay of reaction dynamics and nuclear structure

Author

Recchia F., Montanari D., Montagnoli G., Mărginean N., Lunardi S., Jelavić-Malenica D., Goasduff A., Gadea A., Fioretto E., Farnea E., Courtin S., Haas F., Pollarolo G., Corradi L., Mijatović T., Szilner S., Sahin E., Scarlassara F., Soić N., Stefanini A.M., Ur C.A., and Valiente-Dobón J.J.

Subjects
Physics, QC1-999
Abstract

Multinucleon transfer reactions have been investigated in 40Ar+208Pb with the Prisma+Clara set-up. The experimental differential cross sections of different neutron transfer channels have been obtained at three different angular settings taking into account the transmission through the spectrometer. The experimental yields of the excited states have been determined via particle-γ coincidences. In odd Ar isotopes, we reported a signif cant population of 11/2− states, reached via neutron transfer. Their structure matches a stretched conf guration of the valence neutron coupled to vibration quanta.

Published
2011
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21. A setup for high-energy [formula omitted]-ray spectroscopy with the ELI-NP large-volume LaBr3:Ce and CeBr3 detectors at the 9 MV Tandem accelerator at IFIN-HH

Author

Aogaki, S., Balabanski, D.L., Borcea, R., Constantin, P., Costache, C., Cuciuc, M., Kuşoğlu, A., Mihai, C., Mihai, R.E., Stan, L., Söderström, P.-A., Testov, D., Turturică, A., Ujeniuc, S., Adachi, S., Camera, F., Ciocan, Gh., Crespi, F.C.L., Florea, N.M., Fujikawa, Y., Furuno, T., Gamba, E., Guţoiu, R.A., Kawabata, T., Mărginean, N.M., Million, B., Neacsu, C., Nichita, D., Niina, R., Okamoto, S., Pai, H., Pappalardo, A., Sakanashi, K., Tamii, A., Ur, C.A., and Wieland, O.

Published
2023
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22. The GALILEO [formula omitted]-ray array at the Legnaro National Laboratories

Author

Goasduff, A., Mengoni, D., Recchia, F., Valiente-Dobón, J.J., Menegazzo, R., Benzoni, G., Barrientos, D., Bellato, M., Bez, N., Biasotto, M., Blasi, N., Boiano, C., Boso, A., Bottoni, S., Bracco, A., Brambilla, S., Brugnara, D., Camera, F., Capra, S., Capsoni, A., Cocconi, P., Coelli, S., Cortés, M.L., Crespi, F.C.L., de Angelis, G., Egea, F.J., Fanin, C., Fantinel, S., Gadea, A., Gamba, E.R., Gambalonga, A., Gesmundo, C., Gosta, G., Gottardo, A., Gozzelino, A., Gregor, E.T., Gulmini, M., Ha, J., Hadyńska-Klȩk, K., Illana, A., Isocrate, R., Jaworski, G., John, P.R., Lenzi, S.M., Leoni, S., Lunardi, S., Magalini, M., Marchini, N., Million, B., Modamio, V., Nannini, A., Napoli, D.R., Pasqualato, G., Pellumaj, J., Pérez-Vidal, R.M., Pigliapoco, S., Polettini, M., Porzio, C., Pullia, A., Ramina, L., Rampazzo, G., Rampazzo, M., Rebeschini, M., Rezynkina, K., Rocchini, M., Romanato, M., Rosso, D., Saltarelli, A., Scarcioffolo, M., Siciliano, M., Testov, D.A., Tomasella, D., Tomasi, F., Toniolo, N., Ur, C.A., Ventura, S., Veronese, F., Viscione, E., Volpe, V., Wieland, O., Zanon, I., Ziliani, S., Zhang, G., and Bazzacco, D.

Published
2021
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24. Spectroscopy of Neutron-rich Fe Isotopes Populated in the \(^{70}\)Zn+\(^{238}\)U Reaction

Author

Benito, J., primary, Lenzi, S.M., additional, Recchia, F., additional, Axiotis, M., additional, Aydin, S., additional, Bazzacco, D., additional, Benzoni, G., additional, Bizzeti, P.G., additional, Bizzeti-Sona, A.M., additional, Bracco, A., additional, Broda, R., additional, Bucurescu, D., additional, Caurier, E., additional, Corradi, L., additional, de Angelis, G., additional, Della Vedova, F., additional, Farnea, E., additional, Fornal, B., additional, Fioretto, E., additional, Gadea, A., additional, Gottardo, A., additional, Ionescu-Bujor, M., additional, Iordachescu, A., additional, Leoni, S., additional, Lunardi, S., additional, Mărginean, N., additional, Mărginean, R., additional, Mason, P., additional, Menegazzo, R., additional, Mengoni, D., additional, Million, B., additional, Montagnoli, G., additional, Napoli, D.R., additional, Nowacki, F., additional, Orlandi, R., additional, Pollarolo, G., additional, Poves, A., additional, Sahin, E., additional, Scarlassara, F., additional, Singh, R.P., additional, Stefanini, A.M., additional, Szilner, S., additional, Ur, C.A., additional, Valiente-Dobón, J.J., additional, and Wieland, O., additional

Published
2024
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28. A setup for high-energy γ-ray spectroscopy with the ELI-NP large-volume LaBr3:Ce and CeBr3 detectors at the 9 MV Tandem accelerator at IFIN-HH

Author

Aogaki, S., primary, Balabanski, D.L., additional, Borcea, R., additional, Constantin, P., additional, Costache, C., additional, Cuciuc, M., additional, Kuşoğlu, A., additional, Mihai, C., additional, Mihai, R.E., additional, Stan, L., additional, Söderström, P.-A., additional, Testov, D., additional, Turturică, A., additional, Ujeniuc, S., additional, Adachi, S., additional, Camera, F., additional, Ciocan, Gh., additional, Crespi, F.C.L., additional, Florea, N.M., additional, Fujikawa, Y., additional, Furuno, T., additional, Gamba, E., additional, Guţoiu, R.A., additional, Kawabata, T., additional, Mărginean, N.M., additional, Million, B., additional, Neascu, C., additional, Nichita, D., additional, Niina, R., additional, Okamoto, S., additional, Pai, H., additional, Pappalardo, A., additional, Sakanashi, K., additional, Tamii, A., additional, Ur, C.A., additional, and Wieland, O., additional

Published
2023
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29. The ROSPHERE γ-ray spectroscopy array

Author

Bucurescu, D., Căta-Danil, I., Ciocan, G., Costache, C., Deleanu, D., Dima, R., Filipescu, D., Florea, N., Ghiţă, D.G., Glodariu, T., Ivaşcu, M., Lică, R., Mărginean, N., Mărginean, R., Mihai, C., Negret, A., Niţă, C.R., Olăcel, A., Pascu, S., Sava, T., Stroe, L., Şerban, A., Şuvăilă, R., Toma, S., Zamfir, N.V., Căta-Danil, G., Gheorghe, I., Mitu, I.O., Suliman, G., Ur, C.A., Braunroth, T., Dewald, A., Fransen, C., Bruce, A.M., Podolyák, Zs., Regan, P.H., and Roberts, O.J.

Published
2016
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31. Search of Neutrinoless Double Beta Decay with the GERDA Experiment

Author

Agostini, M., Allardt, M., Bakalyarov, A.M., Balata, M., Barabanov, I., Baudis, L., Bauer, C., Becerici-Schmidt, N., Bellotti, E., Belogurov, S., Belyaev, S.T., Benato, G., Bettini, A., Bezrukov, L., Bode, T., Borowicz, D., Brudanin, V., Brugnera, R., Budjáš, D., Caldwell, A., Cattadori, C., Chernogorov, A., D'Andrea, V., Demidova, E.V., Domula, A., Doroshkevich, E., Egorov, V., Falkenstein, R., Fedorova, O., Freund, K., Frodyma, N., Gangapshev, A., Garfagnini, A., Gooch, C., Gotti, C., Grabmayr, P., Gurentsov, V., Gusev, K., Hampel, W., Hegai, A., Heisel, M., Hemmer, S., Heusser, G., Hoffmann, W., Hult, M., Inzhechik, L.V., Ioannucci, L., Janicksó Csáthy, J., Jochum, J., Junker, M., Kazalov, V., Kihm, T., Kirpichnikov, I.V., Kirsch, A., Klimenko, A., Knöpfle, K.T., Kochetov, O., Kornoukhov, V.N., Kuzminov, V.V., Laubenstein, M., Lazzaro, A., Lebedev, V.I., Lehnert, B., Liao, H.Y., Lindner, M., Lippi, I., Lubashevskiy, A., Lubsandorzhiev, B., Lutter, G., Macolino, C., Majorovits, B., Maneschg, W., Marissens, G., Medinaceli, E., Misiaszek, M., Moseev, P., Nemchenok, I., Nisi, S., Palioselitis, D., Panas, K., Pandola, L., Pelczar, K., Pessina, G., Pullia, A., Reissfelder, M., Riboldi, S., Rumyantseva, N., Sada, C., Salathe, M., Schmitt, C., Schneider, B., Schreiner, J., Schulz, O., Schwingenheuer, B., Schönert, S., Seitz, H., Selivalenko, O., Shevchik, E., Shirchenko, M., Simgen, H., Smolnikov, A., Stanco, L., Stepaniuk, M., Strecker, H., Ur, C.A., Vanhoefer, L., Vasenko, A.A., Veresnikova, A., von Sturm, K., Wagner, V., Walter, M., Wegmann, A., Wester, T., Wiesinger, C., Wilsenach, H., Wojcik, M., Yanovich, E., Zavarise, P., Zhitnikov, I., Zhukov, S.V., Zinatulina, D., Zuber, K., and Zuzel, G.

Published
2016
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32. Selective properties of neutron transfer reactions in the 90Zr + 208Pb system for the population of excited states in zirconium isotopes

Author

Varga Pajtler, M., Szilner, S., Corradi, L., de Angelis, G., Fioretto, E., Gadea, A., Haas, F., Lunardi, S., Jelavić Malenica, D., Mărginean, N., Mengoni, D., Mijatović, T., Montagnoli, G., Montanari, D., Pollarolo, G., Recchia, F., Salsac, M.-D., Scarlassara, F., Soić, N., Stefanini, A.M., Ur, C.A., and Valiente-Dobón, J.J.

Published
2015
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34. Test of the SO(6) selection rule in 196Pt using cold-neutron capture

Author

Jolie, J., Régis, J.-M., Wilmsen, D., Saed-Samii, N., Pfeiffer, M., Warr, N., Blanc, A., Jentschel, M., Köster, U., Mutti, P., Soldner, T., Simpson, G.S., De France, G., Urban, W., Drouet, F., Vancraeyenest, A., Bruce, A.M., Roberts, O.J., Fraile, L.M., Paziy, V., Ignatov, A., Kröll, Th., Ivanova, D., Kisyov, S., Lalkovski, S., Podolyak, Zs., Regan, P.H., Wilson, E., Korten, W., Ur, C.A., Lica, R., and Marginean, N.

Published
2015
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35. Limit on Neutrinoless Double Beta Decay of 76Ge by GERDA

Author

Agostini, M., Allardt, M., Andreotti, E., Bakalyarov, A.M., Balata, M., Barabanov, I., Heider, M. Barabè, Barros, N., Baudis, L., Bauer, C., Becerici-Schmidt, N., Bellotti, E., Belogurov, S., Belyaev, S.T., Benato, G., Bettini, A., Bezrukov, L., Bode, T., Brudanin, V., Brugnera, R., Budjáš, D., Caldwell, A., Cattadori, C., Chernogorov, A., Cossavella, F., Demidova, E.V., Domula, A., Egorov, V., Falkenstein, R., Ferella, A., Freund, K., Frodyma, N., Gangapshev, A., Garfagnini, A., Gotti, C., Grabmayr, P., Gurentsov, V., Gusev, K., Guthikonda, K.K., Hampel, W., Hegai, A., Heisel, M., Hemmer, S., Heusser, G., Hofmann, W., Hult, M., Inzhechik, L.V., Csáthy, J. Janicskó, Jochum, J., Junker, M., Kihm, T., Kirpichnikov, I.V., Kirsch, A., Klimenko, A., Knöpfle, K.T., Kochetov, O., Kornoukhov, V.N., Kuzminov, V.V., Laubenstein, M., Lazzaro, A., Lebedev, V.I., Lehnert, B., Liao, H.Y., Lindner, M., Lippi, I., Lubashevskiy, A., Lubsandorzhiev, B., Lutter, G., Machado, A.A., Macolino, C., Majorovits, B., Maneschg, W., Misiaszek, M., Nemchenok, I., Nisi, S., Shaughnessy, C.O’., Pandola, L., Pelczar, K., Pessina, G., Pullia, A., Riboldi, S., Rumyantseva, N., Sada, C., Salathe, M., Schmitt, C., Schreiner, J., Schulz, O., Schwingenheuer, B., Schönert, S., Shevchik, E., Shirchenko, M., Simgen, H., Smolnikov, A., Stanco, L., Strecker, H., Tarka, M., Ur, C.A., Vasenko, A.A., Volynets, O., von Sturm, K., Wagner, V., Walter, M., Wegmann, A., Wester, T., Wojcik, M., Yanovich, E., Zavarise, P., Zhitnikov, I., Zhukov, S.V., Zinatulina, D., Zuber, K., and Zuzel, G.

Published
2015
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36. High-spin states in Po above the -decaying (18 ) Isomer

Author

Zago, L., Gottardo, A., Valiente-Dobón, J.J., Benzoni, G., Gadea, A., Górska, M., Lunardi, S., Podolyák, Zs., Regan, P.H., Rudolph, D., Algora, A., de Angelis, G., Bazzacco, D., Benlliure, J., Boutachkov, P., Bracco, A., Bruce, A.M., Camera, F., Casarejos, E., Cortés, M.L., Crespi, F.C.L., Corsi, A., Domingo-Pardo, C., Doncel, M., Engert, T., Geissel, H., Gerl, J., Goasduff, A., Goel, N., Grebosz, J., Gregor, E., Habermann, T., Klupp, S., Kojouharov, I., Kurz, N., Lenzi, S.M., Leoni, S., Mandal, S., Menegazzo, R., Mengoni, D., Million, B., Morales, A.I., Napoli, D.R., Naqvi, F., Nociforo, C., Pfützner, M., Pietri, S., Prochazka, A., Recchia, F., Sahin, E., Schaffner, H., Sharma, A., Sitar, B., Siwal, D., Strmen, P., Szarka, I., Ur, C.A., Walker, P.M., Weick, H., Wieland, O., and Wollersheim, H.J.

Abstract

The nucleus $^{212}$Po has been produced through the fragmentation of a $^{238}$U primary beam at 1 GeV/nucleon at GSI, separated with the FRagment Separator, FRS, and studied via isomer γ-decay spectroscopy with the RISING setup. Two delayed previously unknown γ rays have been observed. One has been attributed to the E3 decay of a 21$^{−}$ isomeric state feeding the α-emitting 45-s (18$^{+}$) high-spin isomer. The other γ-ray line has been assigned to the decay of a higher-lying 23$^{+}$ metastable state. These are the first observations of high-spin states above the $^{212}$Po (18$^{+}$) isomer, by virtue of the selectivity obtained via ion-by-ion identification of $^{238}$U fragmentation products. Comparison with shell-model calculations points to shortfalls in the nuclear interactions involving high-j proton and neutron orbitals, to which the region around Z∼100 is sensitive.

Published
2022

37. High-spin states in 212Po above the α-decaying (18+) isomer

Author

Zago, L., primary, Gottardo, A., additional, Valiente-Dobón, J.J., additional, Benzoni, G., additional, Gadea, A., additional, Górska, M., additional, Lunardi, S., additional, Podolyák, Zs., additional, Regan, P.H., additional, Rudolph, D., additional, Algora, A., additional, de Angelis, G., additional, Bazzacco, D., additional, Benlliure, J., additional, Boutachkov, P., additional, Bracco, A., additional, Bruce, A.M., additional, Camera, F., additional, Casarejos, E., additional, Cortés, M.L., additional, Crespi, F.C.L., additional, Corsi, A., additional, Domingo-Pardo, C., additional, Doncel, M., additional, Engert, T., additional, Geissel, H., additional, Gerl, J., additional, Goasduff, A., additional, Goel, N., additional, Grebosz, J., additional, Gregor, E., additional, Habermann, T., additional, Klupp, S., additional, Kojouharov, I., additional, Kurz, N., additional, Lenzi, S.M., additional, Leoni, S., additional, Mandal, S., additional, Menegazzo, R., additional, Mengoni, D., additional, Million, B., additional, Morales, A.I., additional, Napoli, D.R., additional, Naqvi, F., additional, Nociforo, C., additional, Pfützner, M., additional, Pietri, S., additional, Prochazka, A., additional, Recchia, F., additional, Sahin, E., additional, Schaffner, H., additional, Sharma, A., additional, Sitar, B., additional, Siwal, D., additional, Strmen, P., additional, Szarka, I., additional, Ur, C.A., additional, Walker, P.M., additional, Weick, H., additional, Wieland, O., additional, and Wollersheim, H.-J., additional

Published
2022
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38. Germanium-gated γ–γ fast timing of excited states in fission fragments using the EXILL&FATIMA spectrometer

Author

Régis, J.-M., Simpson, G.S., Blanc, A., de France, G., Jentschel, M., Köster, U., Mutti, P., Paziy, V., Saed-Samii, N., Soldner, T., Ur, C.A., Urban, W., Bruce, A.M., Drouet, F., Fraile, L.M., Ilieva, S., Jolie, J., Korten, W., Kröll, T., Lalkovski, S., Mach, H., Mărginean, N., Pascovici, G., Podolyak, Zs., Regan, P.H., Roberts, O.J., Smith, J.F., Townsley, C., Vancraeyenest, A., and Warr, N.

Published
2014
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43. Conceptual design and infrastructure for the installation of the first AGATA sub-array at LNL

Author

Gadea, A., Farnea, E., Valiente-Dobón, J.J., Million, B., Mengoni, D., Bazzacco, D., Recchia, F., Dewald, A., Pissulla, Th., Rother, W., de Angelis, G., Austin, A., Aydin, S., Badoer, S., Bellato, M., Benzoni, G., Berti, L., Beunard, R., Birkenbach, B., Bissiato, E., Blasi, N., Boiano, C., Bortolato, D., Bracco, A., Brambilla, S., Bruyneel, B., Calore, E., Camera, F., Capsoni, A., Chavas, J., Cocconi, P., Coelli, S., Colombo, A., Conventi, D., Costa, L., Corradi, L., Corsi, A., Cortesi, A., Crespi, F.C.L., Dosme, N., Eberth, J., Fantinel, S., Fanin, C., Fioretto, E., Fransen, Ch., Giaz, A., Gottardo, A., Grave, X., Grebosz, J., Griffiths, R., Grodner, E., Gulmini, M., Habermann, T., He, C., Hess, H., Isocrate, R., Jolie, J., Jones, P., Latina, A., Legay, E., Lenzi, S., Leoni, S., Lelli, F., Lersch, D., Lunardi, S., Maron, G., Menegazzo, R., Michelagnoli, C., Molini, P., Montagnoli, G., Montanari, D., Möller, O., Napoli, D.R., Nicoletto, M., Nicolini, R., Ozille, M., Pascovici, G., Peghin, R., Pignanelli, M., Pucknell, V., Pullia, A., Ramina, L., Rampazzo, G., Rebeschini, M., Reiter, P., Riboldi, S., Rigato, M., Rossi Alvarez, C., Rosso, D., Salvato, G., Strachan, J., Sahin, E., Scarlassara, F., Simpson, J., Stefanini, A.M., Stezowski, O., Tomasi, F., Toniolo, N., Triossi, A., Turcato, M., Ur, C.A., Vandone, V., Venturelli, R., Veronese, F., Veyssiere, C., Viscione, E., Wieland, O., Wiens, A., Zocca, F., and Zucchiatti, A.

Published
2011
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44. Interaction position resolution simulations and in-beam measurements of the AGATA HPGe detectors

Author

Söderström, P.-A., Recchia, F., Nyberg, J., Al-Adili, A., Ataç, A., Aydin, S., Bazzacco, D., Bednarczyk, P., Birkenbach, B., Bortolato, D., Boston, A.J., Boston, H.C., Bruyneel, B., Bucurescu, D., Calore, E., Colosimo, S., Crespi, F.C.L., Dosme, N., Eberth, J., Farnea, E., Filmer, F., Gadea, A., Gottardo, A., Grave, X., Grebosz, J., Griffiths, R., Gulmini, M., Habermann, T., Hess, H., Jaworski, G., Jones, P., Joshi, P., Judson, D.S., Kempley, R., Khaplanov, A., Legay, E., Lersch, D., Ljungvall, J., Lopez-Martens, A., Meczynski, W., Mengoni, D., Michelagnoli, C., Molini, P., Napoli, D.R., Orlandi, R., Pascovici, G., Pullia, A., Reiter, P., Sahin, E., Smith, J.F., Strachan, J., Tonev, D., Unsworth, C., Ur, C.A., Valiente-Dobón, J.J., Veyssiere, C., and Wiens, A.

Published
2011
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46. First in-beam experiment with the ELIADE detectors: a spectroscopic study of 130La

Author

Capponi, L., primary, Kuşoğlu, A., additional, Söderström, P.-A., additional, Balabanski, D.L., additional, Turturică, G.V., additional, Bocchi, G., additional, Chesnevskaya, S., additional, Dhal, A., additional, Dinescu, D., additional, Djourelov, N., additional, Niu, Y., additional, Oprisa, A., additional, Pappalardo, A., additional, Suliman, G., additional, and Ur, C.A., additional

Published
2021
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47. Transition probabilities in 31P and 31S: A test for isospin symmetry

Author

Tonev, D., de Angelis, G., Deloncle, I., Goutev, N., De Gregorio, G., Pavlov, P., Pantaleev, I.L., Iliev, S., Yavahchova, M.S., Bizzeti, P.G., Demerdjiev, A., Dimitrov, D.T., Farnea, E., Gadea, A., Geleva, E., He, C.Y., Laftchiev, H., Lenzi, S.M., Lunardi, S., Marginean, N., Menegazzo, R., Napoli, D.R., Nowacki, F., Orlandi, R., Penttilä, H., Recchia, F., Sahin, E., Singh, R.P., Stoyanova, M., Ur, C.A., and Wirth, H.-F.

Published
2021
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48. Evolution of the Ar isotopic chain: the N=28 shell gap south of 48Ca

Author

Mengoni, D., Valiente-Dobón, J.J., Gadea, A., Lenzi, S.M., Lunardi, S., Broda, R., Dewald, A., Pissulla, T., Angus, L., Aydin, S., Bazzacco, D., Benzoni, G., Bizzeti, P.G., Bizzeti-Sona, A.M., Corradi, L., Crespi, F., de Angelis, G., Farnea, E., Fioretto, E., Goergen, A., Gottardo, A., Grodner, E., Królas, W., Leoni, S., Mason, P., Montanari, D., Montagnoli, G., Napoli, D.R., Obertelli, A., Pawłat, T., Pollarolo, G., Recchia, F., Algora, A., Rubio, B., Sahin, E., Scarlassara, F., Smith, J.F., Stefanini, A.M., Szilner, S., Ur, C.A., Wady, P.T., and Wrzesiński, J.

Published
2010
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49. Transition probabilities in P and S: A test for isospin symmetry

Author

Tonev, D., de Angelis, G., Deloncle, I., Goutev, N., De Gregorio, G., Pavlov, P., Pantaleev, I.L., Iliev, S., Yavahchova, M.S., Bizzeti, P.G., Demerdjiev, A., Dimitrov, D.T., Farnea, E., Gadea, A., Geleva, E., He, C.Y., Laftchiev, H., Lenzi, S.M., Lunardi, S., Marginean, N., Menegazzo, R., Napoli, D.R., Nowacki, F., Orlandi, R., Penttilä, H., Recchia, F., Sahin, E., Singh, R.P., Stoyanova, M., Ur, C.A., and Wirth, H.F.

Abstract

Excited states in the mirror nuclei $^{31}$P and $^{31}$S were populated in the 1p and 1n exit channels of the reaction $^{20}$Ne + $^{12}$C, at a beam energy of 33 MeV. The $^{20}$Ne beam was delivered for the first time by the Piave-Alpi accelerator of the Laboratori Nazionali di Legnaro. Angular correlations of coincident γ-rays and Doppler-shift attenuation lifetime measurements were performed using the multi-detector array GASP in conjunction with the EUCLIDES charged particle detector. In the observed B(E1) strengths, the isoscalar component, amounting to 24% of the isovector one, provides strong evidence for breaking of the isospin symmetry in the A=31 mass region. Self-consistent beyond mean field calculations using Equation of Motion method based on a chiral potential and including two- and three-body forces reproduce well the experimental B(E1) strengths, reinforcing our conclusion. Coherent mixing from higher-lying states involving the Giant Isovector Monopole Resonance accounts well for the effect observed. The breaking of the isospin symmetry originates from the violation of the charge symmetry of the two- and three-body parts of the potential, only related to the Coulomb interaction.

Published
2021

50. Manifestation of the Berry phase in the atomic nucleus Pb

Author

Valiente-Dobón, J.J., Gottardo, A., Benzoni, G., Gadea, A., Lunardi, S., Algora, A., de Angelis, G., Bazzacco, D., Benlliure, J., Boutachkov, P., Bracco, A., Bruce, A.M., Camera, F., Casarejos, E., Cortés, M.L., Crespi, F.C.L., Corsi, A., Domingo-Pardo, C., Doncel, M., Engert, T., Geissel, H., Gerl, J., Goasduff, A., Goel, N., Górska, M., Grebosz, J., Gregor, E., Habermann, T., Klupp, S., Kojouharov, I., Kurz, N., Lenzi, S.M., Leoni, S., Mandal, S., Menegazzo, R., Mengoni, D., Million, B., Morales, A.I., Napoli, D.R., Naqvi, F., Nociforo, C., Pfützner, M., Pietri, S., Podolyák, Zs., Prochazka, A., Recchia, F., Regan, P.H., Rudolph, D., Sahin, E., Schaffner, H., Sharma, A., Sitar, B., Siwal, D., Strmen, P., Szarka, I., Ur, C.A., Walker, P.M., Weick, H., Wieland, O., Wollersheim, H.J., and Van Isacker, P.

Abstract

The neutron-rich $^{213}$Pb isotope was produced in the fragmentation of a primary 1 GeV A $^{238}$U beam, separated in FRS in mass and atomic number, and then implanted for isomer decay γ-ray spectroscopy with the RISING setup at GSI. A newly observed isomer and its measured decay properties indicate that states in $^{213}$Pb are characterized by the seniority quantum number that counts the nucleons not in pairs coupled to angular momentum J=0. The conservation of seniority is a consequence of a geometric phase associated with particle-hole conjugation, which becomes observable in semi-magic nuclei where nucleons half-fill the valence shell. The γ-ray spectroscopic observables in $^{213}$Pb are thus found to be driven by two mechanisms, particle-hole conjugation and seniority conservation, which are intertwined through a Berry phase.

Published
2021

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