EXCITATION OF 3/2+, 2.02-MEV STATE IN 41CA BY (T,D) REACTION

The Ca40 (t,d) reaction, with 20-MeV tritons, was used to excite the ground and first two excited states of Ca41. The measured differential cross sections were analyzed using the distorted-wave method, assuming the usual first-order stripping mechanism. The triton optical potential was obtained by fitting measurements of the elastic scattering. The spectroscopic factor C2 S for d32 capture into the 2.02-MeV state was found to be about 0.06 times that for f72 capture into the ground state when the usual well-depth prescription was used for the neutron wave function. More realistic d32 neutron form factors based upon simple model wave functions for Ca40 and Ca41 were also used. They led to spectroscopic factors which are at least twice as large and are found to be very sensitive to the type of nucleon-nucleon interaction assumed. The implications for the amount of particle-hole excitation in the ground state of Ca40 are discussed. © 1969 The American Physical Society.