Annihilation of a relativistic positron and K-electron to yield a photon and second K-electron

摘要: We study the annihilation of a fast positron and K-electron resulting in emission photon second K-electron. It is assumed that all electrons positrons move Coulomb field nucleus parameter αZ much less than unity (α=1/137 fine-structure constant Z atomic number). The electron-electron interaction, which responsible for ejection electron by atom, taken into account first order perturbation theory. calculate differential total cross sections process construct ratio double single ionization as function energy incident positron. Finally, we establish high-energy limit this ratio, equal to 0.34/Z2.