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Absence of Low-Energy Shape Coexistence in ^ 80 Ge: The Nonobservation of a Proposed Excited 0_ 2 ^ + Level at 639 keV.

Author
Abstract
:

The ^{80}Ge structure was investigated in a high-statistics β-decay experiment of ^{80}Ga using the GRIFFIN spectrometer at TRIUMF-ISAC through γ, β-e, e-γ, and γ-γ spectroscopy. No evidence was found for the recently reported 0_{2}^{+} 639-keV level suggested as evidence for low-energy shape coexistence in ^{80}Ge. Large-scale shell model calculations performed in ^{78,80,82}Ge place the 0_{2}^{+} level in ^{80}Ge at 2 MeV. The new experimental evidence combined with shell model predictions indicate that low-energy shape coexistence is not present in ^{80}Ge.

Year of Publication
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2020
Journal
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Physical review letters
Volume
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125
Issue
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17
Number of Pages
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172501
Date Published
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2020
ISSN Number
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0031-9007
URL
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https://link.aps.org/abstract/PRL/v125/p172501
DOI
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10.1103/PhysRevLett.125.172501
Short Title
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Phys Rev Lett
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