ReactionsHe3(π−, n)

Abstract

Differential cross sections for the (n",n) reactions in 3 He and 4 He have been measured at energies of 100, 200, and 290 MeV 0 The angular distributions for 3 He and 4 He are different, with 4 He characterized by an oscillatory pattern with a dip at a fixed angle of =* 70°. The forward-angle cross sections show a simple dependence upon momentum transfer for both 3 He and 4 He. These results are discussed in the context of single-nucleon and multinucleon reaction diagrams.