Abstract
Pion absorption in was studied at =62.5 and 82.8 MeV using nucleon-nucleon coincidences. For absorption on proton-neutron pairs the differential cross section is the same as that for +d→p+p except for an increase by a factor of about 1.5. For absorption on the proton-proton pair, the differential cross section is asymmetric about 90°, indicating possible isospin mixing. The total cross sections are 10.2±0.9 mb and 13.5±1.3 mb at 62.5 and 82.8 MeV and for are 0.70±0.07 mb and 0.92±0.10 mb at 62.5 and 82.8 MeV. The three-body absorption cross sections for and are found to be comparable to each other and show no strong energy dependence. The three-body absorption cross section () is 6.7±2.5 mb and 5.7±2.3 mb and for , () is 8.7±1.4 mb and 6.5±2.0 mb at 62.5 and 82.8 MeV, respectively.
- Received 21 October 1985
DOI:https://doi.org/10.1103/PhysRevC.33.1714
©1986 American Physical Society