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., Mijatovic, 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-Dobon, J. J. (2022). Lifetime measurements of states of S-35, S-36, S-37, and S-38 using the AGATA gamma-ray tracking spectrometer. Phys. Rev. C, 106 (2). COLLEGE PK: AMER PHYSICAL SOC. ISSN 2469-9993

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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 S-36 ions of energy 225 MeV incident on a thin Pb-208 target which was mounted in the Cologne plunger apparatus. The combination of the PRISMA magnetic spectrometer and an early implementation of the AGATA gamma-ray tracking array was used to detect gamma 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 S-35, 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 S-36 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 S-37, the states for which lifetime limits were established were those at 646 keV with J(pi)=3/2(-) and at 2776 keV with J(pi)=11/2(-); there are no previously published lifetime values for excited states of 37S. Finally, a lifetime limit was established for the J(pi )= (6(+)) state of S-38 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.

Item Type: Journal Article
Creators:
CreatorsEmailORCIDORCID Put Code
Grocutt, L.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Chapman, R.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Bouhelal, M.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Haas, F.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Goasduff, A.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Smith, J. F.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Lubna, R. S.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Courtin, S.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Bazzacco, D.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Braunroth, T.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Capponi, L.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Corradi, L.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Derkx, X.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Desesquelles, P.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Doncel, M.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Fioretto, E.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Gottardo, A.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Liberati, VUNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Melon, B.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Mengoni, D.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Michelagnoli, C.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Mijatovic, T.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Modamio, VUNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Montagnoli, G.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Montanari, D.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Mulholland, K. F.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Napoli, D. R.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Petrache, C. M.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Pipidis, A.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Recchia, F.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Sahin, E.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Singh, P. P.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Stefanini, A. M.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Szilner, S.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Valiente-Dobon, J. J.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
URN: urn:nbn:de:hbz:38-696617
DOI: 10.1103/PhysRevC.106.024314
Journal or Publication Title: Phys. Rev. C
Volume: 106
Number: 2
Date: 2022
Publisher: AMER PHYSICAL SOC
Place of Publication: COLLEGE PK
ISSN: 2469-9993
Language: English
Faculty: Unspecified
Divisions: Unspecified
Subjects: no entry
Uncontrolled Keywords:
KeywordsLanguage
NUCLEAR-DATA SHEETS; SHELL-MODEL; COULOMB-EXCITATION; TRANSITIONS; COLLECTIVITY; DETECTORMultiple languages
Physics, NuclearMultiple languages
URI: http://kups.ub.uni-koeln.de/id/eprint/69661

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