Two-phonon structures for beta-decay theory
Abstract
The -decay rates of 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 Sc, the spin-parity of the ground state is found to be . We predict that the half-life of Ca is 0.3 ms, while the total probability of the emission is 6.1%. Additionally, the random matrix theory has been applied to analyse the statistical properties of the spectrum populated in the -decay to elucidate the obtained results.
Keywords
Cite
@article{arxiv.1810.04932,
title = {Two-phonon structures for beta-decay theory},
author = {A. P. Severyukhin and N. N. Arsenyev and I. N. Borzov and R. G. Nazmitdinov and S. Åberg},
journal= {arXiv preprint arXiv:1810.04932},
year = {2018}
}
Comments
4 pages, 1 figure, proceedings of International Conference on Nuclear Structure and Related Topics (NSRT18), June 3-9 2018, Burgas, Bulgaria