Low-, medium-, and high-spin states in the N = Z + 1 nucleus Ga 63

Rudolph, D.; Ragnarsson, I.; Clark, R. M.; Andreoiu, C.; Carpenter, M. P.; Ekman, J.; Fahlander, C.; Kondev, F. G.; Lauritsen, T.; Sarantites, D. G.; Seweryniak, D.; Svensson, C. E.

doi:10.1103/PhysRevC.103.034306

Title: Low-, medium-, and high-spin states in the $N = Z + 1$ nucleus ${}^{63}{Ga}$

Journal Article · Fri Mar 05 00:00:00 EST 2021 · Physical Review C

DOI:https://doi.org/10.1103/PhysRevC.103.034306· OSTI ID:1769457

;

; Clark, R. M.;

; Carpenter, M. P.; Ekman, J.; Fahlander, C.;

;

; Sarantites, D. G.; Seweryniak, D.; Svensson, C. E.

The fusion-evaporation reaction Si-28 + Ca-40 at 122 MeV beam energy was used to populate excited states in the N = Z + 1 nucleus Ga-63. With the combination of the Gammasphere spectrometer and the Microball CsI(T1) charged-particle detector array, the level scheme of Ga-63 was extended by more than a factor of two in terms of number of gamma-ray transitions and excited states, excitation energy (E-x > 30 MeV), and angular momentum (I > 30 h). Nine regular sequences of states were newly established in the high-spin part of the level scheme. The majority of these rotational band structures could be connected to the previously known part of the level scheme by high-energy gamma-ray transitions in the energy range E-gamma = 4-6 MeV. Low-spin states were assessed by shell-model calculations. The high-spin rotational bands were interpreted and classified by means of cranked Nilsson-Strutinsky calculations.

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Research Organization:: Argonne National Lab. (ANL), Argonne, IL (United States); Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States)

Sponsoring Organization:: Swedish Research Council (SRC); USDOE Office of Science (SC), Basic Energy Sciences (BES); USDOE Office of Science (SC), Nuclear Physics (NP)

Grant/Contract Number:: AC02-06CH11357; AC02-05CH11231; FG05-88ER-40406; VR 2016-3969; FG05-88ER40406

OSTI ID:: 1769457

Alternate ID(s):: OSTI ID: 1777454; OSTI ID: 1780752

Journal Information:: Physical Review C, Journal Name: Physical Review C Vol. 103 Journal Issue: 3; ISSN 2469-9985

Publisher:: American Physical SocietyCopyright Statement

Country of Publication:: United States

Language:: English

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Title: Low-, medium-, and high-spin states in the N = Z + 1 nucleus Ga 63

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Title: Low-, medium-, and high-spin states in the $N = Z + 1$ nucleus ${}^{63}{Ga}$