We discuss the process of resonant subbarrier internal conversion of gamma
rays, where the converted electron is transferred to one of the atomic orbi
tals. For the first time we study how this process is affected by residual
interactions: the splitting of the atomic terms in the total angular moment
um of the atom, configuration mixing, and the magnetic interaction between
the electrons of the atom. The calculations are done by the relativistic mu
lticonfiguration Dirac-Fock method with allowance for the Breit interaction
for the M1 transition with an energy of 35 492 eV in multiply charged ions
of Te-125. We show that allowing for the residual interaction is obligator
y if we want to calculate the conversion rate in the vicinity of a resonanc
e correctly. (C) 1999 American Institute of Physics. [S1063-7761(99)00511-9
].