COMPLETE OH-OMEGA CALCULATIONS OF GAMOW-TELLER STRENGTHS FOR NUCLEI IN THE IRON REGION

Gamow-Teller strengths for selected nuclei in the iron region (A appro ximately 56) have been investigated via shell-model Monte Carlo calcul ations with realistic interactions in the complete fp basis. Results f or all cases show significant quenching relative to single-particle es timates, in quantitative agreement with (n,p) data. The T = 0 residual interaction and the f7/2-f5/2 spin-orbit splitting are shown to play major roles in the quenching mechanism. Calculated B(E2,2(1+) --> 0(1)) values are in fair agreement with experiment using effective charge s of e(p) = 1.1e and e(n) = 0.1e.