On Statistical Properties of the Gamow–Teller Strength Distribution in 60 Ca
(2020) In Physics of Atomic Nuclei 83(2). p.171-178- Abstract
Abstract: The β-decay half-life and the delayed neutron emission of 60Ca are 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 and the tensor correlations, 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 probabilities of the βxn emission is 6.1%. To elucidate the obtained results, the random matrix theory has been applied to analyse the statistical properties of the $$1^{+}$$ spectrum populated in the β-decay. We found a... (More)
Abstract: The β-decay half-life and the delayed neutron emission of 60Ca are 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 and the tensor correlations, 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 probabilities of the βxn emission is 6.1%. To elucidate the obtained results, the random matrix theory has been applied to analyse the statistical properties of the $$1^{+}$$ spectrum populated in the β-decay. We found a remarkable agreement between the GT strength distribution, obtained within the microscopic approach, and the ones, generated by means of the random coupling between the one- and two-phonon configurations.
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- author
- Severyukhin, A. P. LU ; Arsenyev, N. N. ; Borzov, I. N. ; Nazmitdinov, R. G. and Åberg, S. LU
- organization
- publishing date
- 2020
- type
- Contribution to journal
- publication status
- published
- subject
- in
- Physics of Atomic Nuclei
- volume
- 83
- issue
- 2
- pages
- 8 pages
- publisher
- MAIK Nauka/Interperiodica
- external identifiers
-
- scopus:85089221594
- ISSN
- 1063-7788
- DOI
- 10.1134/S106377882002026X
- language
- English
- LU publication?
- yes
- id
- 1c4f5d2f-d898-4981-9fb0-be296a85d61f
- date added to LUP
- 2020-08-19 08:50:35
- date last changed
- 2022-04-19 00:23:36
@article{1c4f5d2f-d898-4981-9fb0-be296a85d61f, abstract = {{<p>Abstract: The β-decay half-life and the delayed neutron emission of <sup>60</sup>Ca are 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 and the tensor correlations, considered in the model. For <sup>60</sup>Sc, the spin-parity of the ground state is found to be 1<sup>+</sup>. We predict that the half-life of <sup>60</sup>Ca is 0.3 ms, while the total probabilities of the βxn emission is 6.1%. To elucidate the obtained results, the random matrix theory has been applied to analyse the statistical properties of the $$1^{+}$$ spectrum populated in the β-decay. We found a remarkable agreement between the GT strength distribution, obtained within the microscopic approach, and the ones, generated by means of the random coupling between the one- and two-phonon configurations.</p>}}, author = {{Severyukhin, A. P. and Arsenyev, N. N. and Borzov, I. N. and Nazmitdinov, R. G. and Åberg, S.}}, issn = {{1063-7788}}, language = {{eng}}, number = {{2}}, pages = {{171--178}}, publisher = {{MAIK Nauka/Interperiodica}}, series = {{Physics of Atomic Nuclei}}, title = {{On Statistical Properties of the Gamow–Teller Strength Distribution in <sup>60</sup> Ca}}, url = {{http://dx.doi.org/10.1134/S106377882002026X}}, doi = {{10.1134/S106377882002026X}}, volume = {{83}}, year = {{2020}}, }