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The neutron and proton two-particle nucleus $^{134}$Sb : New low-spin states observed in the decay of $^{134}$Sn and an estimate of the energy of the 7$^-$ isomer

Authors :
K.I. Erokhina
W. Urban
W. Kurcewicz
F. Coraggio
W.R. Phillips
Birger Fogelberg
J. Blomqvist
J. Galy
B. J. Varley
A. Covello
A. G. Smith
A. Korgul
L. R. Morss
M. Górska
V. I. Isakov
A. Gargano
Henryk Mach
N. Schulz
John Durell
T. Rzaca-Urban
I. Ahmad
H. Gausemel
P. Hoff
F. Andreozzi
Institut de Recherches Subatomiques (IReS)
Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Cancéropôle du Grand Est-Université Louis Pasteur - Strasbourg I-Centre National de la Recherche Scientifique (CNRS)
Heyd, Yvette
Source :
European Physical Journal A, European Physical Journal A, EDP Sciences, 2002, 15, pp.181-184, Exotic Nuclei and Atomic Masses ISBN: 9783642624247
Publication Year :
2002
Publisher :
HAL CCSD, 2002.

Abstract

Excited states in the 134Sb nucleus, populated in the β−-decay of 134Sn, have been studied at the mass separator OSIRIS. The 134Sn activity was produced via fast neutron-induced fission of 238U target. A main result was the discovery of a very low-lying first-excited state of 134Sb, at 13 keV, which has led to a strong revision of the level scheme. The new results are compared with different theoretical calculations and with the known data for the analogous neutron and proton two-particle nucleus in the 208Pb region. On the basis of this comparison, the energy of the (πg 7/2νf 7/2)7− isomer is estimated to be about 250 keV, some 100 keV lower than previously reported.

Details

Language :
English
ISBN :
978-3-642-62424-7
ISSN :
14346001 and 1434601X
ISBNs :
9783642624247
Database :
OpenAIRE
Journal :
European Physical Journal A, European Physical Journal A, EDP Sciences, 2002, 15, pp.181-184, Exotic Nuclei and Atomic Masses ISBN: 9783642624247
Accession number :
edsair.doi.dedup.....431bc6943798c5274ed2134f993fddbe