Zhang, W, Cederwall, B, Doncel, M, Aktas, Ö, Ertoprak, A, Qi, C, Grahn, T, Nara Singh, BS, Cullen, DM, Hodge, D et al (show 33 more authors)
(2023)
Decay spectroscopy of
<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"><mml:mmultiscripts><mml:mi>Os</mml:mi><mml:mprescripts /><mml:none /><mml:mrow><mml:mn>171</mml:mn><mml:mo>,</mml:mo><mml:mn>172</mml:mn></mml:mrow></mml:mmultiscripts></mml:math>
and
<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"><mml:mmultiscripts><mml:mi>Ir</mml:mi><mml:mprescripts /><mml:none /><mml:mrow><mml:mn>171</mml:mn><mml:mo>,</mml:mo><mml:mn>172</mml:mn><mml:mo>,</mml:mo><mml:mn>174</mml:mn></mml:mrow></mml:mmultiscripts></mml:math>.
Physical Review C, 107 (1).
014308-.
Abstract
We report on a study of the α-decay fine structure and the associated Eα-Eγ correlations in the decays of Os171,172 and Ir171,172,174. In total, 13 new α-decay energy lines have been resolved, and three new γ-ray transitions have been observed following the new decay branches to Re168 and W167. The weak α-decay branch from the bandhead of the νi13/2 band in Os171 observed in this work highlights an unusual competition between α, β, and electromagnetic decays from this isomeric state. The nucleus Os171 is therefore one of few nuclei observed to exhibit three different decay modes from the same excited state. The nuclei of interest were produced in Mo92(Kr83,xpyn) fusion-evaporation reactions at the Accelerator Laboratory of the University of Jyväskylä, Finland. The fusion products were selected using the gas-filled ion separator RITU and their decays were characterized using an array of detectors for charged particles and electromagnetic radiation known as GREAT. Prompt γ-ray transitions were detected and correlated with the decays using the JUROGAM II germanium detector array surrounding the target position. Results obtained from total Routhian surface (TRS) calculations suggest that α-decay fine structure and the associated hindrance factors may be a sensitive probe of even relatively small shape changes between the final states in the daughter nucleus.
| Item Type: | Article |
|---|---|
| Divisions: | Faculty of Science and Engineering > School of Physical Sciences |
| Depositing User: | Symplectic Admin |
| Date Deposited: | 04 May 2023 10:45 |
| Last Modified: | 17 Mar 2024 16:12 |
| DOI: | 10.1103/physrevc.107.014308 |
| Open Access URL: | https://doi.org/10.1103/PhysRevC.107.014308 |
| Related URLs: | |
| URI: | https://livrepository.liverpool.ac.uk/id/eprint/3170166 |
Dimensions
Dimensions
