Evolution of shape and collectivity along the Ge isotopic chain: The case of 80Ge

Rhodes, D.; Brown, B. A.; Gade, A.; Biswas, S.; Chester, A.; Farris, P.; Henderson, J.; Hill, A.; Li, J.; Nowacki, F.; Rubino, E.; Weisshaar, D.; Wu, C. Y.

doi:10.1103/physrevc.105.024325

Title: Evolution of shape and collectivity along the Ge isotopic chain: The case of ⁸⁰Ge

Journal Article · 21 February 2022 · Physical Review. C

DOI: https://doi.org/10.1103/physrevc.105.024325 · OSTI ID:1845988

Rhodes, D. ^[1]; Brown, B. A. ^[2]; Gade, A. ^[2]; Biswas, S. ^[3]; Chester, A. ^[2]; Farris, P. ^[2]; Henderson, J. ^[4];

^[2]; Li, J. ^[2]; Nowacki, F. ^[5];

^[2];

^[2]; Wu, C. Y. ^[6]

Michigan State Univ., East Lansing, MI (United States); TRIUMF, Vancouver, BC (Canada); Michigan State University
Michigan State Univ., East Lansing, MI (United States)
Michigan State Univ., East Lansing, MI (United States); Paul Scherrer Inst. (PSI), Villigen (Switzerland)
Univ. of Surrey, Guildford (United Kingdom)
Univ. of Strasbourg (France); Centre National de la Recherche Scientifique (CNRS), Strasbourg (France)
Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States)

In this work, the shape and collectivity of ⁸⁰Ge were investigated via a sub-barrier-energy Coulomb excitation measurement using the JANUS setup at the NSCL ReA3 facility. The ⁸⁰Ge spectroscopic quadrupole moment $$Q_{s}(2^{+}_{1})$$ of the $$2^{+}_{1}$$ state was measured for the first time, and the precision of the ⁸⁰Ge $$B(E2; 0^{+}_{1}$$ → $$2^{+}_{1}$$) transition strength was increased. The experimental $$Q_{s}(2^{+}_{1})$$ value indicates a large, prolate deformation for ⁸⁰Ge, which is consistent with large-scale shell-model calculations performed for comparison. These results provide important benchmarks for models that try to describe nuclear shape in neutron-rich nuclei near the magic number N=50.

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Research Organization:: Lawrence Livermore National Laboratory (LLNL), Livermore, CA (United States); Michigan State Univ., East Lansing, MI (United States)

Sponsoring Organization:: National Science Foundation (NSF); UK Research and Innovation (UKRI); USDOE National Nuclear Security Administration (NNSA); USDOE Office of Science (SC), Nuclear Physics (NP)

Grant/Contract Number:: AC52-07NA27344; NA0003180; SC0020451

OSTI ID:: 1845988

Report Number(s):: LLNL-JRNL-829086; PHY-1565546; PHY-1811855; DE-AC52-07NA27344; MR/T022264/1

Journal Information:: Physical Review. C, Journal Name: Physical Review. C Journal Issue: 2 Vol. 105; ISSN 2469-9985

Publisher:: American Physical Society (APS)Copyright Statement

Country of Publication:: United States

Language:: English

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