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 triton channel, on a Sn-120 target. Measurements were made for both continuum 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 proceed solely via a Coulomb force. The data generally show a somewhat better agreement with continuum discretized coupled channels calculations, indicating the importance of the nuclear force and channel coupling in the reaction mechanism.