L₁Subshell Yields of Pt and Hg

Abstract

L, subshell fluorescence yields w 1 of Pt and Hg have been determined by comparing the intensities of K and L X-ray spectra emitted after the disintegration of 1 9 5 A ~ and 1 9 9 A ~, respectively. For Pt w 1 was also obtained by measurement of the L, X-ray photons emitted per disintegration. A value of the Coster Kronig f,, yield of platinum was also obtained.The experimental results are:

RELATIVISTIC 2S1/2 (L1) ATOMIC SUBSHELL RADIATIONLESS TRANSITION PROBABILITIES FOR Yb AND Hg

“…The relevant value from this work was found to be at variance with experiment [5]. An even more pronounced disagreement between experiment [6] and the calculations of Chen et al [3,4] was found for Hg (Z = 80). It consequently is of interest to recompute radiationless transition probabilities to the L 1 subshells of Yb and Hg with an updated and recently improved single-configuration Dirac-Fock code and to compare the sparse existing results so as to pinpoint the flaws that have created this lacuna in our understanding of atomic inner-shell dynamics.…”

“…For Hg, the two ω 1 available experimental values obtained by Marques et al [6] and by Ş ahin et al [12], are 0.132 ± 0.018 and 0.059 ± 0.01, respectively, with nonoverlapping error bars. These experiments had employed quite different methods, with the latter [12] [13].…”

Relativistic 2s1/2(L1) atomic subshell decay rates and fluorescence yields for Yb and Hg

“…In what concerns Hg, we have also listed in table 5, together with our calculated values, the correspondent theoretical values calculated by Chen et al [8] and by Crasemann et al [31], and the experimental value obtained by Marques et al [9].…”