Internal conversion of high-multipolarity transitions in109Ag and113In

Abstract

The internal conversion coefficients were measured for the 88.032keV E3 transition in ~~ using the 4re pressurized proportional counter, the windowless 4n scintillation counter and the double-focusing magnetic spectrometer. The results are: a T = 26.4 _+ 0.4, ~K=11.4_+0.3, ~L, = 0.63 _+ 0.13, C~L2 = 5.48 ___ 0.18 , C~L3=6.11___0.20 , C~M = 2.40 __ 0.08 , C~NO= 0.405 +0.021. The theoretical conversion coefficients were calculated for this transition and for the 391.69 keV M4 transition in 113In and were found to be in agreement with the experiment.

Methods for primary standardization of activity

“…The γ -ray detection efficiency is higher than 97% between 20 keV and 160 keV. The instrument has been used for standardizations and determinations of nuclear decay data [69][70][71][72][73][74].…”