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Shape and shell structure of lighter (N?90) neutron-rich nuclei based on a phenomenological Woods-Saxon potential

Hamamoto, Ikuko LU (2019) In Physical Review C 99(2).
Abstract

By using a phenomenologically successful Woods-Saxon potential, I study the shape and shell structure of (A) neutron drip line nuclei with 10≤N≤60, (B) neutron-rich nuclei related to the r process with 40≤N≤90, and (C) one-particle spectra in the potential provided by the nucleus Fe70 as a representative of so-called N=40 "island of inversion" (IoI) nuclei. First, the shell structure that is unique in very weakly bound neutrons is systematically studied, and the approximate neutron number of odd-N nuclei at which spherical (or deformed) halos can be found is pinned down. Second, the difference of the shell structure in r-process nuclei from that in stable nuclei is examined. Third, the similarity and the difference between the shell... (More)

By using a phenomenologically successful Woods-Saxon potential, I study the shape and shell structure of (A) neutron drip line nuclei with 10≤N≤60, (B) neutron-rich nuclei related to the r process with 40≤N≤90, and (C) one-particle spectra in the potential provided by the nucleus Fe70 as a representative of so-called N=40 "island of inversion" (IoI) nuclei. First, the shell structure that is unique in very weakly bound neutrons is systematically studied, and the approximate neutron number of odd-N nuclei at which spherical (or deformed) halos can be found is pinned down. Second, the difference of the shell structure in r-process nuclei from that in stable nuclei is examined. Third, the similarity and the difference between the shell structure of N=20 IoI nuclei and that of N=40 IoI nuclei are analyzed. As a result, it is concluded that in Fe and Cr isotopes the deformation called "N=40 IoI" continuing up to N=50 is unlikely.

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Please use this url to cite or link to this publication:
author
organization
publishing date
type
Contribution to journal
publication status
published
subject
in
Physical Review C
volume
99
issue
2
publisher
American Physical Society
external identifiers
  • scopus:85062468141
ISSN
2469-9985
DOI
10.1103/PhysRevC.99.024319
language
English
LU publication?
yes
id
76e3302b-d788-42e2-bdce-2acee639c27b
date added to LUP
2019-03-13 11:55:51
date last changed
2019-08-11 04:46:39
@article{76e3302b-d788-42e2-bdce-2acee639c27b,
  abstract     = {<p>By using a phenomenologically successful Woods-Saxon potential, I study the shape and shell structure of (A) neutron drip line nuclei with 10≤N≤60, (B) neutron-rich nuclei related to the r process with 40≤N≤90, and (C) one-particle spectra in the potential provided by the nucleus Fe70 as a representative of so-called N=40 "island of inversion" (IoI) nuclei. First, the shell structure that is unique in very weakly bound neutrons is systematically studied, and the approximate neutron number of odd-N nuclei at which spherical (or deformed) halos can be found is pinned down. Second, the difference of the shell structure in r-process nuclei from that in stable nuclei is examined. Third, the similarity and the difference between the shell structure of N=20 IoI nuclei and that of N=40 IoI nuclei are analyzed. As a result, it is concluded that in Fe and Cr isotopes the deformation called "N=40 IoI" continuing up to N=50 is unlikely.</p>},
  articleno    = {024319},
  author       = {Hamamoto, Ikuko},
  issn         = {2469-9985},
  language     = {eng},
  month        = {02},
  number       = {2},
  publisher    = {American Physical Society},
  series       = {Physical Review C},
  title        = {Shape and shell structure of lighter (N?90) neutron-rich nuclei based on a phenomenological Woods-Saxon potential},
  url          = {http://dx.doi.org/10.1103/PhysRevC.99.024319},
  volume       = {99},
  year         = {2019},
}