Interactions of 38- and 61-Mev Positive Pions in Deuterium

Measurements have been made of the reactions (1) π⁺+d→π⁺+d, (2) π⁺+d→π⁺+n+p, and (3) π⁺+d→p+p at incident pion lab energies of 38 and 61 Mev using a liquid deuterium target and scintillation counters. A separation of the three processes is obtained by determining the mass and energy of reaction products using a pulse-height analysis technique on the signals from the scintillation counters. Results from process (3) are compared with other processes involving two nucleons and a meson and results from processes (1) and (2) are compared with impulse approximation calculations.