1999/01/27 by Jameel‐Un Nabi, J. -U. Nabi, H. V. Klapdor‐Kleingrothaus +1 · 4 citations
Earth and Planetary Sciences · Physics and Astronomy · #High-pressure geophysics and materials #Nuclear physics research studies #Quantum Chromodynamics and Particle Interactions #astro-ph #nucl-th
paper · pdf · doi:10.1007/s100500050292
published as Eur.Phys.J.A5:337-339,1999 · 9 pages
arxiv created 1999/01/27 · openalex publication_date 1999/07/01 · arxiv updated 2011/08/03 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28
We report here the microscopic calculation of weak interaction rates in stellar matter for 709 nuclei with A = 18 to 100 using a generalized form of proton-neutron quasiparticle RPA model with separable Gamow-Teller forces. This is the first ever extensive microscopic calculation of weak rates calculated over a wide temperature-density grid which includes 107 ≤ T(K) ≤ 30 × 109 and 10 ≤ ρYe (gcm-3) ≤ 1011, and over a larger mass range. Particle emission processes from excited states, previously ignored, are taken into account, and are found to significantly affect some β decay rates. The calculated capture and decay rates take into consideration the latest experimental energy levels and ft value compilations. Our calculation of electron capture and β-decay rates, in the fp-shell, show considerable differences with a recently reported shell model diagonalization approach calculation.