L-subshell fluorescence cross sections and L-subshell fluorescence yields in elements 68 <= Z <= 92 by 59.5 keV photons

Sahin M., Demir L., Sogut O., Ertugrul M., Icelli O.

JOURNAL OF PHYSICS B-ATOMIC MOLECULAR AND OPTICAL PHYSICS, vol.33, no.1, pp.93-98, 2000 (SCI-Expanded) identifier identifier


L-subshell (sigma(1), sigma(2) and sigma(3)) x-ray fluorescence cross sections were measured for Er, Ta, W, Au, Hg, T1, Pb, Bi, Th and U at an excitation energy of 59.5 keV using a Si(Li) detector coupled to a model 4096 computerized multi-channel analyser. The values of L-i-subshell fluorescence yields (omega(1), omega(2) and omega(3)) have been measured for the same elements using the previously measured cross section values and the theoretical L-i-subshell photoionization cross section Coster-Kronig transition probabilities and emission rates. It is observed that the measured L-i (i = 1, 2 and 3) subshell x-ray fluorescence cross section and L-i-subshell fluorescence yield (omega(1), omega(2) and omega(3)) values for the elements are in general agreement with the theoretical ones evaluated using L-subshell fluorescence yields and the L-subshell photoionization cross section.