(HE-3,T) REACTIONS ON UNSTABLE NUCLEI AT INTERMEDIATE ENERGIES

We study the charge-exchange (He-3,t) reactions on unstable nuclei the oretically. Since this charge-exchange reaction takes place on the nuc lear surface, this reaction is very sensitive to the neutron skin, and we show that the calculated cross sections are affected strongly by t he existence of the neutron skin. This reaction can be observed using the inversa-kinematics method. We think the (He-3,t) reaction is very useful to observe the neutron skins and also to get new information on isospin dependence of the Delta excitation mechanism in nuclei.