Angle independence of the⁵Li_g.s. Γ width

Summary

We measured the differential cross-sections for the⁶Li(³He, ααp) reaction at various detector angles in a kinematical complete way by 7 and 9 MeV energy³He beams. The analysis of the αp bidimensional spectra allowed us to separate the⁵Li_{g. s.} contributions from the first excited state ones of the same nucleus. The Γ(⁵Li_{g. s.}) values deduced from both the experiments atE(³He)=7 and 9 MeV do not appear to be dependent on the: i)⁵Li_{g. s.} emission angle, ii)⁵Li_{g. s.} decay proton angle when correlated to the various α-particle emission angles.