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α decay of high-spin isomers in N = 84 isotones

Clark, R. M. ; Crawford, H. L. ; Macchiavelli, A. O. ; Rudolph, D. LU ; Såmark-Roth, A. LU ; Campbell, C. M. ; Cromaz, M. ; Fallon, P. ; Morse, C. and Santamaria, C. (2019) In Physical Review C 99(2).
Abstract

The superfluid tunneling model is applied to the calculation of half-lives of the observed α decays in N=84 isotones. Results of our calculations are compared to experimental data on the ground-state α decays along the isotonic chain from 144Nd to 159Re. Good agreement is found. The α decays of the known high-spin isomers in 155Lu, 156Hf, 157Ta, and 158W are also well reproduced, once a reduction in the pairing strength is taken into account. This includes reproduction of the main features of the recently observed fine structure from 155Lu (25/2-) and 156Hf (8+). Predictions for the α-decay fine structure of... (More)

The superfluid tunneling model is applied to the calculation of half-lives of the observed α decays in N=84 isotones. Results of our calculations are compared to experimental data on the ground-state α decays along the isotonic chain from 144Nd to 159Re. Good agreement is found. The α decays of the known high-spin isomers in 155Lu, 156Hf, 157Ta, and 158W are also well reproduced, once a reduction in the pairing strength is taken into account. This includes reproduction of the main features of the recently observed fine structure from 155Lu (25/2-) and 156Hf (8+). Predictions for the α-decay fine structure of 157Ta (25/2-) and 158W (8+) high-spin isomers are presented.

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author
; ; ; ; ; ; ; ; and
organization
publishing date
type
Contribution to journal
publication status
published
subject
keywords
alpha decay, isomer decays, lifetimes & widths, nuclear structure and decays
in
Physical Review C
volume
99
issue
2
article number
024325
pages
6 pages
publisher
American Physical Society
external identifiers
  • scopus:85062472746
ISSN
2469-9985
DOI
10.1103/PhysRevC.99.024325
project
Characterization of New Superheavy Elements
language
English
LU publication?
yes
id
5b8836cf-8ced-4bb4-b6e4-2b1c1ab2d92e
date added to LUP
2019-03-11 12:19:37
date last changed
2020-12-29 04:09:47
@article{5b8836cf-8ced-4bb4-b6e4-2b1c1ab2d92e,
  abstract     = {<p>The superfluid tunneling model is applied to the calculation of half-lives of the observed α decays in <i>N</i>=84 isotones. Results of our calculations are compared to experimental data on the ground-state α decays along the isotonic chain from <sup>144</sup>Nd to <sup>159</sup>Re. Good agreement is found. The α decays of the known high-spin isomers in <sup>155</sup>Lu, <sup>156</sup>Hf, <sup>157</sup>Ta, and <sup>158</sup>W are also well reproduced, once a reduction in the pairing strength is taken into account. This includes reproduction of the main features of the recently observed fine structure from <sup>155</sup>Lu (25/2<sup>-</sup>) and <sup>156</sup>Hf (8<sup>+</sup>). Predictions for the α-decay fine structure of <sup>157</sup>Ta (25/2<sup>-</sup>) and <sup>158</sup>W (8<sup>+</sup>) high-spin isomers are presented.</p>},
  author       = {Clark, R. M. and Crawford, H. L. and Macchiavelli, A. O. and Rudolph, D. and Såmark-Roth, A. and Campbell, C. M. and Cromaz, M. and Fallon, P. and Morse, C. and Santamaria, C.},
  issn         = {2469-9985},
  language     = {eng},
  month        = {02},
  number       = {2},
  publisher    = {American Physical Society},
  series       = {Physical Review C},
  title        = {α decay of high-spin isomers in <i>N</i> = 84 isotones},
  url          = {https://lup.lub.lu.se/search/ws/files/61359036/PhysRevC.99.024325.pdf},
  doi          = {10.1103/PhysRevC.99.024325},
  volume       = {99},
  year         = {2019},
}