K-shell ionization during the α-decay of superheavy nuclei

Abstract

The probabilities of K-shell ionization in daughter atoms during the α-decay of extensively studied 84Po isotopes and superheavy 117 294 Ts, 113 286 Nh, 109 278 Mt, 105 270 Db, 102 253 No, 100 249 Fm, and 111 272 Rg nuclei are calculated. Monopole and dipole terms are considered. More accurate expressions for α-particle tunneling through the atomic Coulomb barrier are derived. The electron wave functions are calculated using the relativistic Dirac–Fock method. The results are essential for processing the spectra analyzed in combined α-, γ-, and conversion-electron spectroscopy.