Effect of fission product internal conversion on degree of their ionization

Experimental study of distribution fine structure on ionization degree of a heavy group (A=131-145) separated by mass of 241Pu fission products at three values of kinetic energy, i.e. Ek=67, 70 and 73 MeV. Their structure smoothing and the separation of atomic and nuclear ionization effects of fission products was performed by their additional recharging in t <5x10-10 s after fission. It has been shown that the contribution of the nuclear effect of ionization depends on excitation energy of fission products and their nuclear structure attaining ∼ 50% for certain masses. Experimental proofs of the essential role of nuclear transition internal conversion of fission products in the formation of their electron shell have been obtained