Centroids of Gamow-Teller transitions at finite temperature in fp-shell neutron-rich nuclei
arXiv:astro-ph/9907159 · doi:10.1238/Physica.Regular.059a00352
Abstract
The temperature dependence of the energy centroids and strength distributions for Gamow-Teller (GT) $1^+$ excitations in several fp-shell nuclei is studied. The quasiparticle random phase approximations (QRPA) is extended to describe GT states at finite temperature. A shift to lower energies of the GT$^+$ strength is found, as compared to values obtained at zero temperature.
12 pages, contains 3 tables. E-mail: akr@tifr.res.in, civitare@venus.fisica.unlp.edu.ar