PI-MESON ABSORPTION BY 3-PARTICLE NUCLEI

The reactions pi+ + He-3 --> 3p and pi- + H-3 --> 3n are considered with both two- and three-nucleon pion-absorption taken into account. The pion-absorption with all nucleons of the nucleus involved and the interference of the two absorption mechanisms are shown to be of the same importance as a pure two-particle absorption in nuclei. The latter cannot be considered dominating as it used to be.