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Nilsson diagrams for light neutron-rich nuclei with weakly-bound neutrons

Hamamoto-Kuroda, Ikuko LU (2007) In Physical Review C: covering nuclear physics 76.
Abstract
Using Woods-Saxon potentials and the eigenphase formalism for one-particle resonances, one-particle bound and resonant levels for neutrons as a function of quadrupole deformation are presented, which are supposed to be useful for the interpretation of spectroscopic properties of some light neutron-rich nuclei with weakly bound neutrons. Compared with Nilsson diagrams in textbooks that are constructed using modified oscillator potentials, we point out a systematic change of the shell structure in connection with both weakly bound and resonant one-particle levels related to small orbital angular momenta . Then, it is seen that weakly bound neutrons in nuclei such as 15-19C and 33-37Mg may prefer being deformed as a result of the Jahn-Teller... (More)
Using Woods-Saxon potentials and the eigenphase formalism for one-particle resonances, one-particle bound and resonant levels for neutrons as a function of quadrupole deformation are presented, which are supposed to be useful for the interpretation of spectroscopic properties of some light neutron-rich nuclei with weakly bound neutrons. Compared with Nilsson diagrams in textbooks that are constructed using modified oscillator potentials, we point out a systematic change of the shell structure in connection with both weakly bound and resonant one-particle levels related to small orbital angular momenta . Then, it is seen that weakly bound neutrons in nuclei such as 15-19C and 33-37Mg may prefer being deformed as a result of the Jahn-Teller effect, due to the near degeneracy of the 1d5/2-2s1/2 levels and the 1f7/2-2p3/2 levels in the spherical potential, respectively. Furthermore, the absence of some one-particle resonant levels compared with the Nilsson diagrams in textbooks is illustrated. (Less)
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author
organization
publishing date
type
Contribution to journal
publication status
published
subject
in
Physical Review C: covering nuclear physics
volume
76
publisher
American Physical Society
external identifiers
  • WOS:000251327000036
  • Scopus:36849040697
DOI
10.1103/PhysRevC.76.054319
language
English
LU publication?
yes
id
52356bb6-e08b-4f39-b07e-ab94626987c1 (old id 702125)
date added to LUP
2008-01-07 21:32:29
date last changed
2016-12-04 04:43:40
@misc{52356bb6-e08b-4f39-b07e-ab94626987c1,
  abstract     = {Using Woods-Saxon potentials and the eigenphase formalism for one-particle resonances, one-particle bound and resonant levels for neutrons as a function of quadrupole deformation are presented, which are supposed to be useful for the interpretation of spectroscopic properties of some light neutron-rich nuclei with weakly bound neutrons. Compared with Nilsson diagrams in textbooks that are constructed using modified oscillator potentials, we point out a systematic change of the shell structure in connection with both weakly bound and resonant one-particle levels related to small orbital angular momenta . Then, it is seen that weakly bound neutrons in nuclei such as 15-19C and 33-37Mg may prefer being deformed as a result of the Jahn-Teller effect, due to the near degeneracy of the 1d5/2-2s1/2 levels and the 1f7/2-2p3/2 levels in the spherical potential, respectively. Furthermore, the absence of some one-particle resonant levels compared with the Nilsson diagrams in textbooks is illustrated.},
  author       = {Hamamoto-Kuroda, Ikuko},
  language     = {eng},
  publisher    = {ARRAY(0x7f8b780)},
  series       = {	Physical Review C: covering nuclear physics},
  title        = {Nilsson diagrams for light neutron-rich nuclei with weakly-bound neutrons},
  url          = {http://dx.doi.org/10.1103/PhysRevC.76.054319},
  volume       = {76},
  year         = {2007},
}