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Experimental approach towards shell structure at Sn-100 and Ni-78

Grawe, H ; Gorska, M ; Fahlander, Claes LU ; Palacz, M ; Nowacki, F ; Caurier, E ; Daugas, JM ; Lewitowicz, M ; Sawicka, M and Grzywacz, R , et al. (2002) In Nuclear Physics, Section A 704. p.211-222
Abstract
The status of experimental approach to Sn-100 and Ni-78 is reviewed. Revised single particle energies for neutrons are deduced for the N=Z=50 shell closure and evidence for low lying I-pi=2(+) and 3(-) states is presented. Moderate E2 polarization charges of 0.1 e and 0.6 e are found to reproduce the experimental data when core excitation of Sn-100 is properly accounted for in the shell model. For the neutron rich Ni region no conclusive evidence for an N=40 subshell is found, whereas firm evidence for the persistence of the N=50 shell at Ni-78 is inferred from the existence of seniority isomers. The disappearance of this isomerism in the mid nug(9/2) shell is discussed.
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organization
publishing date
type
Contribution to journal
publication status
published
subject
in
Nuclear Physics, Section A
volume
704
pages
211 - 222
publisher
Elsevier
external identifiers
  • wos:000177073200023
  • scopus:0037125059
ISSN
0375-9474
DOI
10.1016/S0375-9474(02)00781-9
language
English
LU publication?
yes
id
ab67865f-8222-48f5-845f-d0522e97ee63 (old id 332614)
date added to LUP
2016-04-01 15:46:42
date last changed
2025-10-14 10:35:18
@article{ab67865f-8222-48f5-845f-d0522e97ee63,
  abstract     = {{The status of experimental approach to Sn-100 and Ni-78 is reviewed. Revised single particle energies for neutrons are deduced for the N=Z=50 shell closure and evidence for low lying I-pi=2(+) and 3(-) states is presented. Moderate E2 polarization charges of 0.1 e and 0.6 e are found to reproduce the experimental data when core excitation of Sn-100 is properly accounted for in the shell model. For the neutron rich Ni region no conclusive evidence for an N=40 subshell is found, whereas firm evidence for the persistence of the N=50 shell at Ni-78 is inferred from the existence of seniority isomers. The disappearance of this isomerism in the mid nug(9/2) shell is discussed.}},
  author       = {{Grawe, H and Gorska, M and Fahlander, Claes and Palacz, M and Nowacki, F and Caurier, E and Daugas, JM and Lewitowicz, M and Sawicka, M and Grzywacz, R and Rykaczewski, K and Sorlin, O and Leenhardt, S and Azaiez, F}},
  issn         = {{0375-9474}},
  language     = {{eng}},
  pages        = {{211--222}},
  publisher    = {{Elsevier}},
  series       = {{Nuclear Physics, Section A}},
  title        = {{Experimental approach towards shell structure at Sn-100 and Ni-78}},
  url          = {{http://dx.doi.org/10.1016/S0375-9474(02)00781-9}},
  doi          = {{10.1016/S0375-9474(02)00781-9}},
  volume       = {{704}},
  year         = {{2002}},
}