Influence of multiple ionization of atom on γ ray internal conversion probability

The systematic calculations of the internal-conversion coefficients (ICC) for the hydrogen-like ions are carried out. The differences of the corresponding ICC5 for the neutral atoms reach the order of the value near the ionization threshold and for the high multiplicity transitions. In the number of cases the atoms ionization changes the life time of the excited nuclei up to eight orders. The above difference decreases with the increase in the transition energy, however, it remains noticeable practically for all main transitions. The above-mentioned differences correspond with a very good accuracy to the change in the zero density of the corresponding electron states. The problems of the experimental studies on the effects are discussed