First Evidence of Axial Shape Asymmetry and Configuration Coexistence in 74Zn: Suggestion for a Northern Extension of the N=40 Island of Inversion
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68407700%3A21670%2F23%3A00366899" target="_blank" >RIV/68407700:21670/23:00366899 - isvavai.cz</a>
Result on the web
<a href="https://doi.org/10.1103/PhysRevLett.130.122502" target="_blank" >https://doi.org/10.1103/PhysRevLett.130.122502</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1103/PhysRevLett.130.122502" target="_blank" >10.1103/PhysRevLett.130.122502</a>
Alternative languages
Result language
angličtina
Original language name
First Evidence of Axial Shape Asymmetry and Configuration Coexistence in 74Zn: Suggestion for a Northern Extension of the N=40 Island of Inversion
Original language description
The excited states of N = 44 74Zn were investigated via gamma-ray spectroscopy following 74Cu beta decay. By exploiting gamma-gamma angular correlation analysis, the 2 thorn 2 , 3 thorn 1 , 0 thorn 2 , and 2 thorn 3 states in 74Zn were firmly established. The gamma-ray branching and E2/M 1 mixing ratios for transitions deexciting the 2 thorn 2 , 3 thorn 1 , and 2 thorn 3 states were measured, allowing for the extraction of relative BoE2 thorn values. In particular, the 2 thorn 3 -0 thorn 2 and 2 thorn 3 -4 thorn 1 transitions were observed for the first time. The results show excellent agreement with new microscopic large-scale shell-model calculations, and are discussed in terms of underlying shapes, as well as the role of neutron excitations across the N = 40 gap. Enhanced axial shape asymmetry (triaxiality) is suggested to characterize 74Zn in its ground state. Furthermore, an excited K = 0 band with a significantly larger softness in its shape is identified. A shore of the N = 40 "island of inversion" appears to manifest above Z = 26, previously thought as its northern limit in the chart of the nuclides.
Czech name
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Czech description
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Classification
Type
J<sub>imp</sub> - Article in a specialist periodical, which is included in the Web of Science database
CEP classification
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OECD FORD branch
10304 - Nuclear physics
Result continuities
Project
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Continuities
I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace
Others
Publication year
2023
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data specific for result type
Name of the periodical
Physical Review Letters
ISSN
0031-9007
e-ISSN
1079-7114
Volume of the periodical
130
Issue of the periodical within the volume
12
Country of publishing house
US - UNITED STATES
Number of pages
6
Pages from-to
1-6
UT code for WoS article
000960591800006
EID of the result in the Scopus database
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