Precision measurements of proton emission from the ground states of 156Ta and 160Re
Abstract
The decays of the πd3/2 ground states of 156Ta and 160Re have been studied in detail using the GREAT spectrometer. More than 7000 160Re nuclei were produced in reactions of 290- and 300-MeV 58Ni ions with an isotopically enriched 106Cd target and separated in flight using the RITU separator. The proton and α decays of the πd3/2 level were confirmed and the half-life and branching ratios of this state were determined with improved precision to be t1/2=611±7 μs and bp=89±1% and bα=11±1%, respectively. The α-decay branch populated the ground state of 156Ta, allowing improved values for the proton-decay energy and half-life to be obtained (Ep=1011±5 keV; t1/2=106±4 ms). The β decay of this level was identified for the first time and a branching ratio of bβ=29±3% was deduced. The spectroscopic factors deduced from these measurements are compared with predictions.
Main Authors
Format
Articles
Research article
Published
2011
Series
Subjects
Publication in research information system
Publisher
American Physical Society (APS)
The permanent address of the publication
https://urn.fi/URN:NBN:fi:jyu-202204042129Käytä tätä linkitykseen.
Review status
Peer reviewed
ISSN
0556-2813
DOI
https://doi.org/10.1103/PhysRevC.83.064320
Language
English
Published in
Physical Review C : Nuclear Physics
Citation
- Darby, I. G., Page, R. D., Joss, D. T., Bianco, L., Grahn, T., Judson, D. S., Simpson, J., Eeckhaudt, S., Greenlees, P. T., Jones, P. M., Julin, R., Juutinen, S., Ketelhut, S., Leino, M., Leppänen, A.-P., Nyman, M., Rahkila, P., Sarén, J., Scholey, C., . . . Hadinia, B. (2011). Precision measurements of proton emission from the ground states of 156Ta and 160Re. Physical Review C : Nuclear Physics, 83(6), Article 064320. https://doi.org/10.1103/PhysRevC.83.064320
Additional information about funding
This work was supported by the UK Science and Technology Facilities Council; the Swedish Natural Science Research Council; the Academy of Finland through the Finnish Centre of Excellence Programme (Project No. 44875 Nuclear and Condensed Matter Physics Programme at JYFL) and support for C.S. (Contract No. 209430) and P.T.G. (Contract No. 111965); the European Union Sixth Framework Contract EURONS (Contract No. RII3-CT-2004-506065); and the European Union Marie Curie Programme (Contract No. HPMT-CT-2001-00250).
Copyright©2011 American Physical Society