Radiative pion capture in 2H, 3He and 3H.

We investigate the π^– + ²H → γ + n + n, π^– + ³He → γ + ³H, π^– + ³He → γ + n + d, π^– + ³He → γ + n + n + p and π^– + ³H → γ + n + n + n capture reactions using realistic two-nucleon and three-nucleon potentials and the single nucleon Kroll-Ruderman-type transition operator. We obtain predictions for the total capture rates for all these processes, calculating rigorously the initial and final nuclear states. [ABSTRACT FROM AUTHOR]