Blurring the Boundaries: Decays of Multiparticle Isomers at the Proton Drip Line
Abstract
A multiparticle spin-trap isomer has been discovered in the proton-unbound nucleus 158
73Ta85. The isomer
mainly decays by γ-ray emission with a half-life of 6.1ð1Þ μs. Analysis of the γ-ray data shows that
the isomer lies 2668 keV above the known 9þ state and has a spin 10ℏ higher and negative parity. This
19− isomer also has an 8644(11) keV, 1.4(2)% α-decay branch that populates the 9þ state in 154Lu.
No proton-decay branch from the isomer was identified, despite the isomer being unbound to proton
emission by 3261(14) keV. This remarkable stability against proton emission is compared with theoretical
predictions, and the implications for the extent of observable nuclides are considered.
Main Authors
Format
Articles
Research article
Published
2014
Series
Subjects
Publication in research information system
Publisher
American Physical Society
The permanent address of the publication
https://urn.fi/URN:NBN:fi:jyu-201602051455Käytä tätä linkitykseen.
Review status
Peer reviewed
ISSN
0031-9007
DOI
https://doi.org/10.1103/PhysRevLett.112.092501
Language
English
Published in
Physical Review Letters
Citation
- Carroll, R. J., Page, R. D., Joss, D. T., Uusitalo, J., Darby, I. G., Andgren, K., Cederwall, B., Eeckhaudt, S., Grahn, T., Gray-Jones, C., Greenlees, P., Hadinia, B., Jones, P., Julin, R., Juutinen, S., Leino, M., Leppänen, A.-P., Nyman, M., O’Donnell, D., . . . Simpson, J. (2014). Blurring the Boundaries: Decays of Multiparticle Isomers at the Proton Drip Line. Physical Review Letters, 12(9), Article 092501. https://doi.org/10.1103/PhysRevLett.112.092501
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Copyright© 2014 American Physical Society. Published in this repository with the kind permission of the publisher.