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

Abstract

© 2019 American Physical Society. 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 Nd144 to Re159. Good agreement is found. The α decays of the known high-spin isomers in Lu155, Hf156, Ta157, and W158 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 Lu155(25/2-) and Hf156(8+). Predictions for the α-decay fine structure of Ta157(25/2-) and W158(8+) high-spin isomers are presented.

Authors:
; ; ; ; ; ; ; ; ;
Publication Date:
Research Org.:
Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States)
Sponsoring Org.:
USDOE Office of Science (SC), Nuclear Physics (NP) (SC-26)
OSTI Identifier:
1503661
DOE Contract Number:  
AC02-05CH11231
Resource Type:
Journal Article
Journal Name:
Physical Review C
Additional Journal Information:
Journal Volume: 99; Journal Issue: 2
Country of Publication:
United States
Language:
English

Citation Formats

Clark, RM, Crawford, HL, Macchiavelli, AO, Rudolph, D, Såmark-Roth, A, Campbell, CM, Cromaz, M, Fallon, P, Morse, C, and Santamaria, C. α decay of high-spin isomers in N=84 isotones. United States: N. p., 2019. Web. doi:10.1103/physrevc.99.024325.
Clark, RM, Crawford, HL, Macchiavelli, AO, Rudolph, D, Såmark-Roth, A, Campbell, CM, Cromaz, M, Fallon, P, Morse, C, & Santamaria, C. α decay of high-spin isomers in N=84 isotones. United States. doi:10.1103/physrevc.99.024325.
Clark, RM, Crawford, HL, Macchiavelli, AO, Rudolph, D, Såmark-Roth, A, Campbell, CM, Cromaz, M, Fallon, P, Morse, C, and Santamaria, C. Thu . "α decay of high-spin isomers in N=84 isotones". United States. doi:10.1103/physrevc.99.024325.
@article{osti_1503661,
title = {α decay of high-spin isomers in N=84 isotones},
author = {Clark, RM and Crawford, HL and Macchiavelli, AO and Rudolph, D and Såmark-Roth, A and Campbell, CM and Cromaz, M and Fallon, P and Morse, C and Santamaria, C},
abstractNote = {© 2019 American Physical Society. 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 Nd144 to Re159. Good agreement is found. The α decays of the known high-spin isomers in Lu155, Hf156, Ta157, and W158 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 Lu155(25/2-) and Hf156(8+). Predictions for the α-decay fine structure of Ta157(25/2-) and W158(8+) high-spin isomers are presented.},
doi = {10.1103/physrevc.99.024325},
journal = {Physical Review C},
number = 2,
volume = 99,
place = {United States},
year = {2019},
month = {2}
}

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