GAMOW-TELLER STRENGTH IN FE-54 AND FE-56

Through a sequence of large scale 0 (h) over bar omega shell model cal culations, Gamow-Teller strengths (S-+ and S--) in Fe-54 and Fe-56 are obtained. They reproduce the experimental values by quenching the sig ma tau operator through the standard factor of 0.77. Comparisons are m ade with recent shell model Monte Carlo calculations. Results are show n to depend critically on the interaction. It is argued that the exper imental data contain enough strength in the region above the resonance to make them consistent with the 3(N-Z) sum rule.