Measurement of L Shell X-Ray Production and Average L Shell Fluorescence Yields for Some Heavy Elements at 123.6 keV

Abstract

L2γ, L2η, L 1β and L1γ X-ray production cross--sections and L shell average fluorescence yields were measured for the elements from Re to U using excitation energy of 123.6 keV. Measurements were performed using an 57 Co annular radioactive source and a Si(Li) detector. The theoretical values of the cross-sections were calculated using theoretically tabulated values of subshell photoionization cross-sections; the Coster-Kronig transition probabilities were based on the Dirac-HartreeSlater theory and radiative emission rates. Experimental results were compared with the theoretically calculated values of L shell X-ray cross-sections. The present experimental results are in agreement with theoretical values.

Investigation on L-shell X-ray fluorescence parameters for heavy elements and compounds

“…Apaydın et al [11] calculated the L-shell average fluorescence yield and the production cross-section for the elements in the atomic range 75 6 Z 6 92 using a 57 Co radioactive source and a Si(Li) detector. Özdemir [12] measured the L sub-shell fluorescence and the Auger yields for the elements from Cs to U using a 241 Am radioactive source of strength 100 mCi and a Si(Li) detector.…”

L subshell and total L shell photoeffect cross-sections of Sn, Sb, Te and I elements at 5.96 keV

“…The theoretically calculation of L shell X-ray cross-sections have been performed as explained in our earlier paper [26]. …”

Investigation on Li (i = l, β, and γ)–to-Lα X-ray Intensity Ratios of Tl in Thallium Compounds

“…The fluorescence parameters of the K, L and M shells of the elements are used in scientific researches especially in nuclear power plants, radiation protection, storage of radioactive materials, space studies etc. Moreover, a comparison of the fluorescence parameters with theoretical estimates provides a check on the validity of various physical parameters in the evaluation of theoretical estimation [4]. When looked at the literature, the L X-ray intensity ratios of the samples have been studied by a number of researchers using different detectors and sources [5][6][7][8][9][10][11][12][13][14][15][16][17][18][19].…”