Yields of hydrogen isotopes in stopped-pion absorption by light nuclei

The spectra of p , d , and t charged particles produced in stopped-pion absorption by nuclei are analyzed. Respective measurements were performed for 17 nuclei by means of a semiconductor spectrometer. A phenomenological model developed previously for medium-heavy and heavy nuclei was applied to describing the spectra and yields of charged particles originating from light nuclei ( 6,7 Li, 9 Be, 10,11 B, and 12 C). The contribution of intranuclear clusters (such as pp and 3,4 He) to pion absorption was estimated.