Nuclear excitation due to photon-free annihilation of positrons
Vishnevskii' I.N. , Zheltonozhskii V.A. , Svyato V.P. , Trishin V.V.
The excitation of In113115 and Cd111 nuclei in photon-free annihilation of positrons in matter was investigated experimentally by observing the isomeric T'-ray transitions. A large discrepancy between the theoretical and experimental cross sections for In115 is established.