Study of Two-Step Mechanisms in Pion Absorption on 6Li, 12C via Deuteron Emission

摘要

The (pi+,pd), and (pi+,dd) reactions were investigated with pions of 100 and165 MeV kinetic energy on 6Li and 12C targets. In comparison with previouslypublished (pi+,pp) data on the same targets and at the same beam energies,kinematic regions were identified in which the neutron pickup process n+p->ddominated the observed deuteron yield. The importance of this mechanismincreases with energy, contributing half of the observed cross section at 165MeV. The contribution of direct quasi-triton absorption is significant only at100 MeV.