Comparative compilation of experimental and theoretical internal conversion coefficients of pure E2 transitions

The most precise theoretical internal conversion coefficient (ICC) tables are of Hager and Seltzer, Rosel et al. and Kibe'di et al. with subtle differences. The experimental measurements of ICCs are one of the important parameters in nuclear structure studies. A rigorous comparison of experimental ICCs with various theoretical tabulations is possible only when a large data on experimental ICCs is available at one place. For this reason, a compilation of all the available experimental K-shell internal conversion coefficients (α_K) of pure E2 transitions for a number of elements in the range of 24⩽Z ⩽ 94 is presented. Listing of experimental data includes 284 pure E2 transitions in 175 nuclei across the nuclear chart of which 30 transitions in 19 nuclei are of high precision. Data sets with less than 10 % experimental uncertainty have been selected for comparison with the theoretical values of Hager and Seltzer, Rosel et al. and Kibe'di et al. The relative percentage deviation (%Δ) have been calculated for each of the above theories and the average (%Δ‾)are estimated. The BrIccFO theoretical calculations of Kibe'di et al. using the frozen orbital approximation are seen to give theoretical ICCs closest to experimental values.