TENSOR ANALYZING POWERS FOR LI-7 BREAKUP

Differential cross sections and T-20 and T-T(20) analyzing powers have been measured for 70 MeV Li-7 breakup into the ru particle plus trito n channel, on a Sn-120 target. Measurements were made for both continu um breakup and sequential breakup via the 4.63 MeV state in Li-7. The T-20 data for the continuum breakup do not agree with a semiclassical Coulomb model, indicating that the breakup at small angles does not pr oceed solely via a Coulomb force. The data generally show a somewhat b etter agreement with continuum discretized coupled channels calculatio ns, indicating the importance of the nuclear force and channel couplin g in the reaction mechanism.