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Observation of a Core-Excited E4 Isomer in 98Cd

Blazhev, A; Andreoiu, Corina LU ; Ekman, Jörgen LU ; Fahlander, Claes LU and Rudolph, Dirk LU (2004) In Physical Review C: covering nuclear physics 69.
Abstract
A core-excited I = (12+) spin-gap isomer was identified in 98Cd in an experiment at EUROBALL IV. It was found to feed the known I = (8+) seniority isomer by an E4 transition. Half-lives of T1/2 = 0.23() µs and 0.17() µs were measured for the two states at Ex = 6635 keV and 2428 keV, respectively. From the excitation energy of the core-excited isomer a 100Sn shell gap of 6.46(15) MeV is inferred. The measured E4 and E2 strengths, 100Sn core excitations and the origin of empirical polarization charges are discussed in the framework of large-scale shell model calculations. An E2 polarization charge for protons of e<0.4 e is found, which corresponds to the empirical value e = 0.45() e in the pure proton hole valence space.
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: covering nuclear physics
volume
69
publisher
American Physical Society
external identifiers
  • WOS:000222391000012
  • Scopus:4143094990
DOI
10.1103/PhysRevC.69.064304
language
English
LU publication?
yes
id
8037d8f3-9a83-4e7b-b2e7-a0e5ddfc84b0 (old id 713186)
date added to LUP
2007-12-11 14:11:46
date last changed
2016-12-04 04:44:52
@misc{8037d8f3-9a83-4e7b-b2e7-a0e5ddfc84b0,
  abstract     = {A core-excited I = (12+) spin-gap isomer was identified in 98Cd in an experiment at EUROBALL IV. It was found to feed the known I = (8+) seniority isomer by an E4 transition. Half-lives of T1/2 = 0.23() µs and 0.17() µs were measured for the two states at Ex = 6635 keV and 2428 keV, respectively. From the excitation energy of the core-excited isomer a 100Sn shell gap of 6.46(15) MeV is inferred. The measured E4 and E2 strengths, 100Sn core excitations and the origin of empirical polarization charges are discussed in the framework of large-scale shell model calculations. An E2 polarization charge for protons of e&lt;0.4 e is found, which corresponds to the empirical value e = 0.45() e in the pure proton hole valence space.},
  author       = {Blazhev, A and Andreoiu, Corina and Ekman, Jörgen and Fahlander, Claes and Rudolph, Dirk},
  language     = {eng},
  publisher    = {ARRAY(0x8f02200)},
  series       = {	Physical Review C: covering nuclear physics},
  title        = {Observation of a Core-Excited E4 Isomer in 98Cd},
  url          = {http://dx.doi.org/10.1103/PhysRevC.69.064304},
  volume       = {69},
  year         = {2004},
}