Change in the conversion rate for the E3-isomer sup(235m)U (76,8 eV; 1/2+ → 7/2-) at variation of configurations of the valence band of the atomic shell

In the framework of the relativistic Hartree-Fock-Slater method, a change of the conversion rate lambda for the E3 isomer (at the transition energy of h/2πω=77 eV) with respect to the rate lambda for the normal configuration of uranium atom, (7ssup(1/2)sup(2)(6dsup(3/2))sup(1)(5fsup(5/2))sup(3), is calcUlated for 14 configurations of the valence band of the atomic shell, including considerable variations of the occupation numbers in 6d, 7s, and 5f orbits. A very strong change Δlambda/lambda1 is found to be due to variation of the occupation number for the 5f orbit (ΔN(5f) not equal to 0); the change amounts to about 8% per ΔN(5f)=+-1, that is an order of magnitude higher than Δlambda/lambda1 due to variations of the occupation numbers for other orbits in the cases where N(5f)=const. Though the direct contribution from the 5f electrons to the conversion is very small (<= 0.1%), variations ΔN(5f) in the occupation number of the well localized 5f orbit result in an equal change of the screening effect for more extended 6p and 6d orbits, which are mainly responsible for the conversion. This comphased effect is producing a strong summary change Δlambda/lambda1 for ΔN(5f) not equal to 0. A rigid correlation between the partial conversion rate and the r. m. s. radius of the orbit is obtained for 6p orbits