Gamma energy evaluation for creation of 111mCd, 113mIn, and 115mIn isotopes

NASA Glenn Research Center is investigating nuclear reactions in deuterated materials exposed to bremsstrahlung photons with kinetic energies from 1-3 MeV. Recent experiments used a continuous beam Dynamitron electron accelerator with a braking target. Electron beam energy loss verification was desired and experiments using cadmium and indium were completed which are known to transition to excited metastable states after exposure to bremsstrahlung photons. The gamma spin-up of 111Cd, 113In, and 115In are with photon beam energies of 1017 keV, 1024 keV, and 941 keV respectively. Recent tests corroborated published gamma energies using a beam energy loss of 62 to 74 keV.