Systematics of Gamow-Teller strengths in mid-fp-shell nuclei

Abstract

We show that the presently available data on the Gamow-Teller (GT) strength in mid-fp-shell nuclei are proportional to the product of the numbers of valence protons and neutron holes in the full fp-shell. This observation leads to important insights into the mechanism for GT quenching and to a simple parametrization of the Gamow-Teller strengths important for electron capture by fp-shell nuclei in the early stage of supernovae.

9 pages + 1 figure, Caltech preprint MAP-166

References in corpus (1)

• Monte Carlo evaluation of path integrals for the nuclear shell model

Cited by in corpus (10)

• Shell-model calculations of stellar weak interaction rates: II. Weak rates for nuclei in the mass range A=45-65 in supernovae environment
• Shell-model Monte Carlo studies of fp-shell nuclei
• Electron capture on iron group nuclei
• Supernova electron capture rates for 55Co and 56Ni
• Stellar electron capture rates on neutron-rich nuclei and their impact on core-collapse
• Gamow-Teller GT+ distributions in nuclei with mass A=90-97
• Gamow-Teller strength distributions for nuclei in pre-supernova stellar cores
• Microscopic description of Gamow-Teller transitions in middle pf--shell nuclei by a realistic shell model calculation
• Centroids of Gamow-Teller transitions at finite temperature in fp-shell neutron-rich nuclei
• ${\beta }^{+}$ and electron capture of fp shell nuclei with $Tz=-2$