Speaker
Prof.
Yoshitaka Fujita
(Osaka, Japan)
Description
We did \beta^{-}-type high-resolution (3He,t) experiment on
Tz=1 f-shell target nuclei with mass numbers A=42, 46, 50 and
54 and studied the strength distribution of Gamow-Teller
transitions in the final Tz=0 nuclei.
The main strength moved from low-lying region to higher Ex
region as a function of A, and a Resonance-like structure was
formed in the A=54 system. This suggests that the nature of
the residual p-n interaction changed from attractive to repulsive.
