Intermediate energy charge-exchange reactions induced by polarized 3He

Spin polarization transfer is proven to be very useful in obtaining detailed information of the continuum nuclear responses. The data, taken for the (p, n) reactions, have enabled us to separate the response into the spin longitudinal and transverse components. These partial nuclear responses have been successfully used to make critical tests of nuclear structure models. In the present paper, we shall first summarize the results of the data and the theoretical analyses made so far. We shall then discuss information obtainable from the (3He, t) reaction, emphasizing on the differences and similarities in comparison with the (p, n) reaction. The results of numerical calculations made for (3He, t) reactions based on the microscopic distorted wave impulse approximation will also be reported.