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Two-phonon structures for beta-decay theory

Severyukhin, A. P. LU ; Arsenyev, N. N. ; Borzov, I. N. ; Nazmitdinov, R. G. and Åberg, S. LU (2018) 2018 International Conference on Nuclear Structure and Related Topics, NSRT 2018 In EPJ Web of Conferences 194.
Abstract

The β-decay rates of 60Ca have been studied within a microscopic model, which is based on the Skyrme interaction T45 to construct single-particle and phonon spaces. We observe a redistribution of the Gamow-Teller strength due to the phonon-phonon coupling, considered in the model. For 60Sc, the spin-parity of the ground state is found to be 1+. We predict that the half-life of 60Ca is 0.3 ms, while the total probability of the βxn emission is 6:1%. Additionally, the random matrix theory has been applied to analyze the statistical properties of the 1+ spectrum populated in the β-decay to elucidate the obtained results.

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author
; ; ; and
organization
publishing date
type
Chapter in Book/Report/Conference proceeding
publication status
published
subject
host publication
International Conference on Nuclear Structure and Related Topics (NSRT18)
series title
EPJ Web of Conferences
volume
194
article number
02008
conference name
2018 International Conference on Nuclear Structure and Related Topics, NSRT 2018
conference location
Burgas, Bulgaria
conference dates
2018-06-03 - 2018-06-09
external identifiers
  • scopus:85057855052
ISSN
2101-6275
DOI
10.1051/epjconf/201819402008
language
English
LU publication?
yes
id
ec7ef5fb-bbc7-4b6b-8666-c34dc9837b3b
date added to LUP
2018-12-20 09:43:21
date last changed
2022-01-31 08:00:17
@inproceedings{ec7ef5fb-bbc7-4b6b-8666-c34dc9837b3b,
  abstract     = {{<p>The β-decay rates of <sup>60</sup>Ca have been studied within a microscopic model, which is based on the Skyrme interaction T45 to construct single-particle and phonon spaces. We observe a redistribution of the Gamow-Teller strength due to the phonon-phonon coupling, considered in the model. For <sup>60</sup>Sc, the spin-parity of the ground state is found to be 1+. We predict that the half-life of <sup>60</sup>Ca is 0.3 ms, while the total probability of the βxn emission is 6:1%. Additionally, the random matrix theory has been applied to analyze the statistical properties of the 1<sup>+</sup> spectrum populated in the β-decay to elucidate the obtained results.</p>}},
  author       = {{Severyukhin, A. P. and Arsenyev, N. N. and Borzov, I. N. and Nazmitdinov, R. G. and Åberg, S.}},
  booktitle    = {{International Conference on Nuclear Structure and Related Topics (NSRT18)}},
  issn         = {{2101-6275}},
  language     = {{eng}},
  month        = {{11}},
  series       = {{EPJ Web of Conferences}},
  title        = {{Two-phonon structures for beta-decay theory}},
  url          = {{http://dx.doi.org/10.1051/epjconf/201819402008}},
  doi          = {{10.1051/epjconf/201819402008}},
  volume       = {{194}},
  year         = {{2018}},
}