Issue |
Europhys. Lett.
Volume 46, Number 5, June I 1999
|
|
---|---|---|
Page(s) | 577 - 582 | |
Section | Nuclear physics | |
DOI | https://doi.org/10.1209/epl/i1999-00301-2 | |
Published online | 01 September 2002 |
Shell-model study of the highly forbidden beta decay
Department of Physics, University of Jyväskylä
P.O. Box 35 (Y5 ), 40351 Jyväskylä, Finland
Received:
19
November
1998
Accepted:
18
March
1999
Ordinary decay of the + ground state of
is studied. Partial half-lives for the highly-forbidden transitions to
the three lowest-lying states
of
are
calculated by using both the harmonic oscillator and the Woods-Saxon
mean-field wave functions. We find the decay to be dominated, as
expected, by the unique fourth-forbidden transition to the excited
5+ state of
.
The theoretical beta-decay half-life of
is found to be
years which is approximately 25 times
longer than the measured double-beta-decay half-life of
years.
PACS: 21.60.Cs – Shell model / 23.40.-s – Decay; double decay; electron and muon capture / 23.40.Hc – Relation with nuclear matrix elements and nuclear structure
© EDP Sciences, 1999
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