Evolution of the N = 40 neutron subshell in 20 ≤ Z ≤ 30 nuclei within the dispersive optical model

The evolution of single-particle neutron spectra in the N = 40 isotones 60 Ca, 62 Ti, 64 Cr, 66 Fe, 68 Ni, and 70 Zn is calculated on the basis of the mean-field model featuring a dispersive optical potential. The results of these calculations agree with the idea that the degree of collectivity beco...

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Bibliographic Details
Published in:Physics of atomic nuclei 2016-07, Vol.79 (4), p.581-585
Main Authors: Bespalova, O. V., Ermakova, T. A., Klimochkina, A. A., Spasskaya, T. I.
Format: Article
Language:English
Subjects:
Analysis
CALCIUM 60
CHROMIUM 64
IRON 66
ISOTONIC NUCLEI
MEAN-FIELD THEORY
NEUTRON SPECTRA
NICKEL 68
Nuclear physics
NUCLEAR PHYSICS AND RADIATION PHYSICS
Nuclei
OPTICAL MODELS
Particle and Nuclear Physics
Physics
Physics and Astronomy
TITANIUM 62
ZINC 70
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Summary:The evolution of single-particle neutron spectra in the N = 40 isotones 60 Ca, 62 Ti, 64 Cr, 66 Fe, 68 Ni, and 70 Zn is calculated on the basis of the mean-field model featuring a dispersive optical potential. The results of these calculations agree with the idea that the degree of collectivity becomes higher in the 64 Сr nucleus and that the coupling of single-particle motion to this collectivity becomes stronger, as well as with available experimental data, which are indicative of the closure of the N = 40 subshell in 68 Ni and of the trend toward this closure in 60 Ca.
ISSN:1063-7788
1562-692X
DOI:10.1134/S1063778816040049