Lifetime measurements of states of , , , and using the AGATA -ray tracking spectrometer
Abstract
Lifetimes or lifetime limits of a small number of excited states of the sulfur isotopes with mass numbers A = 35 , 36, 37, and 38 have been measured using the differential recoil-distance method. The isotopes of sulfur were populated in binary grazing reactions initiated by a beam of 36S ions of energy 225 MeV incident on a thin 208Pb target which was mounted in the Cologne plunger apparatus. The combination of the PRISMA magnetic spectrometer and an early implementation of the AGATA γ-ray tracking array was used to detect γ rays in coincidence with projectile-like nuclear species. Lifetime measurements of populated states were measured within the range from about 1 to 100 ps. The number of states for which lifetime measurements or lifetime limits were possible was limited by statistics. For 35S, the lifetime was determined for the first 1/2+ state at 1572 keV; the result is compared with a previous published lifetime value. The lifetime of the 3- state of 36S at 4193 keV was determined and compared with earlier measurements. No previous lifetime information exists for the (6+) state at 6690 keV; a lifetime measurement with large associated error was made in the present work. For 37S,more »
- Authors:
-
more »
- University of the West of Scotland, Paisley (United Kingdom); Scottish Universities Physics Alliance (SUPA) (United Kingdom)
- Université Larbi Tébessi, Tébessa (Algeria)
- University of Strasbourg (France); Centre National de la Recherche Scientifique (CNRS), Strasbourg (France)
- Laboratori Nazionali di Legnaro, Padova (Italy)
- Florida State University, Tallahassee, FL (United States); TRIUMF, Vancouver, BC (Canada)
- Universitá degli Studi di Padova (Italy); Istituto Nazionale di Fisica Nucleare, Sezione di Padova (Italy)
- University zu Koln (Germany)
- University of the West of Scotland, Paisley (United Kingdom); Scottish Universities Physics Alliance (SUPA) (United Kingdom); Horia Hulubei National Institute for R&D in Physics and Nuclear Engineering (IFIN-HH), Bucharest (Romania)
- University Paris-Sud, Orsay (France); Université Paris-Saclay, Orsay (France)
- Universidad de Salamanca (Spain); University of Liverpool (United Kingdom)
- University of Florence (Italy)
- Institute Laue-Langevin, Grenoble (France)
- Ruder Bošković Institute, Zagreb (Croatia)
- Université Paris-Saclay, Orsay (France)
- Laboratori Nazionali di Legnaro, Padova (Italy); University of Oslo (Norway)
- Indian Inst. of Technology (IIT), Ropar (India)
- Publication Date:
- Research Org.:
- Florida State Univ., Tallahassee, FL (United States)
- Sponsoring Org.:
- USDOE Office of Science (SC), Nuclear Physics (NP); Science and Technologies Facility Council (STFC); National Science Foundation (NSF); Natural Sciences and Engineering Research Council of Canada (NSERC); Croatian Science Foundation
- OSTI Identifier:
- 1979897
- Grant/Contract Number:
- SC0009883; ST/L005808/1; ST/P005101/1; PHY-1712953
- Resource Type:
- Accepted Manuscript
- Journal Name:
- Physical Review. C
- Additional Journal Information:
- Journal Volume: 106; Journal Issue: 2; Journal ID: ISSN 2469-9985
- Publisher:
- American Physical Society (APS)
- Country of Publication:
- United States
- Language:
- English
- Subject:
- nuclear physics; electromagnetic transitions; lifetimes and widths; nuclear structure and decays; shell model
Citation Formats
Grocutt, L., Chapman, R., Bouhelal, M., Haas, F., Goasduff, A., Smith, J. F., Lubna, R. S., Courtin, S., Bazzacco, D., Braunroth, T., Capponi, L., Corradi, L., Derkx, X., Desesquelles, P., Doncel, M., Fioretto, E., Gottardo, A., Liberati, V., Melon, B., Mengoni, D., Michelagnoli, C., Mijatović, T., Modamio, V., Montagnoli, G., Montanari, D., Mulholland, K. F., Napoli, D. R., Petrache, C. M., Pipidis, A., Recchia, F., Sahin, E., Singh, P. P., Stefanini, A. M., Szilner, S., and Valiente-Dobón, J. J. Lifetime measurements of states of S35 , S36 , S37 , and S38 using the AGATA γ -ray tracking spectrometer. United States: N. p., 2022.
Web. doi:10.1103/physrevc.106.024314.
Grocutt, L., Chapman, R., Bouhelal, M., Haas, F., Goasduff, A., Smith, J. F., Lubna, R. S., Courtin, S., Bazzacco, D., Braunroth, T., Capponi, L., Corradi, L., Derkx, X., Desesquelles, P., Doncel, M., Fioretto, E., Gottardo, A., Liberati, V., Melon, B., Mengoni, D., Michelagnoli, C., Mijatović, T., Modamio, V., Montagnoli, G., Montanari, D., Mulholland, K. F., Napoli, D. R., Petrache, C. M., Pipidis, A., Recchia, F., Sahin, E., Singh, P. P., Stefanini, A. M., Szilner, S., & Valiente-Dobón, J. J. Lifetime measurements of states of S35 , S36 , S37 , and S38 using the AGATA γ -ray tracking spectrometer. United States. https://doi.org/10.1103/physrevc.106.024314
Grocutt, L., Chapman, R., Bouhelal, M., Haas, F., Goasduff, A., Smith, J. F., Lubna, R. S., Courtin, S., Bazzacco, D., Braunroth, T., Capponi, L., Corradi, L., Derkx, X., Desesquelles, P., Doncel, M., Fioretto, E., Gottardo, A., Liberati, V., Melon, B., Mengoni, D., Michelagnoli, C., Mijatović, T., Modamio, V., Montagnoli, G., Montanari, D., Mulholland, K. F., Napoli, D. R., Petrache, C. M., Pipidis, A., Recchia, F., Sahin, E., Singh, P. P., Stefanini, A. M., Szilner, S., and Valiente-Dobón, J. J. Tue .
"Lifetime measurements of states of S35 , S36 , S37 , and S38 using the AGATA γ -ray tracking spectrometer". United States. https://doi.org/10.1103/physrevc.106.024314. https://www.osti.gov/servlets/purl/1979897.
@article{osti_1979897,
title = {Lifetime measurements of states of S35 , S36 , S37 , and S38 using the AGATA γ -ray tracking spectrometer},
author = {Grocutt, L. and Chapman, R. and Bouhelal, M. and Haas, F. and Goasduff, A. and Smith, J. F. and Lubna, R. S. and Courtin, S. and Bazzacco, D. and Braunroth, T. and Capponi, L. and Corradi, L. and Derkx, X. and Desesquelles, P. and Doncel, M. and Fioretto, E. and Gottardo, A. and Liberati, V. and Melon, B. and Mengoni, D. and Michelagnoli, C. and Mijatović, T. and Modamio, V. and Montagnoli, G. and Montanari, D. and Mulholland, K. F. and Napoli, D. R. and Petrache, C. M. and Pipidis, A. and Recchia, F. and Sahin, E. and Singh, P. P. and Stefanini, A. M. and Szilner, S. and Valiente-Dobón, J. J.},
abstractNote = {Lifetimes or lifetime limits of a small number of excited states of the sulfur isotopes with mass numbers A = 35 , 36, 37, and 38 have been measured using the differential recoil-distance method. The isotopes of sulfur were populated in binary grazing reactions initiated by a beam of 36S ions of energy 225 MeV incident on a thin 208Pb target which was mounted in the Cologne plunger apparatus. The combination of the PRISMA magnetic spectrometer and an early implementation of the AGATA γ-ray tracking array was used to detect γ rays in coincidence with projectile-like nuclear species. Lifetime measurements of populated states were measured within the range from about 1 to 100 ps. The number of states for which lifetime measurements or lifetime limits were possible was limited by statistics. For 35S, the lifetime was determined for the first 1/2+ state at 1572 keV; the result is compared with a previous published lifetime value. The lifetime of the 3- state of 36S at 4193 keV was determined and compared with earlier measurements. No previous lifetime information exists for the (6+) state at 6690 keV; a lifetime measurement with large associated error was made in the present work. For 37S, the states for which lifetime limits were established were those at 646 keV with Jπ = 3/2- and at 2776 keV with Jπ = 11/2-; there are no previously published lifetime values for excited states of 37S. Finally, a lifetime limit was established for the Jπ =(6+) state of 38S at 3675 keV; no lifetime information exists for this state in the literature. Measured lifetime values were compared with the results of state-of-the-art shell-model calculations based on the PSDPF, SDPF-U, and FSU effective interactions. In addition, nuclear magnetic-dipole and electric-quadrupole moments, branching ratios, mixing ratios, and electromagnetic transition rates, where available, have been compared with shell-model values. The current work suffers from poor statistics; nevertheless, lifetime values and limits have been possible, allowing a useful discussion of the ability of state-of-the-art shell-model calculations to reproduce the experimental results.},
doi = {10.1103/physrevc.106.024314},
journal = {Physical Review. C},
number = 2,
volume = 106,
place = {United States},
year = {Tue Aug 16 00:00:00 EDT 2022},
month = {Tue Aug 16 00:00:00 EDT 2022}
}
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