Conductivity measurements have been made on liquid hydrocarbons and solutions of tetramethyltin in hydrocarbons exposed to 4–6-keV x rays. It is found that although the free ion yield of the pure liquid at 6-keV photon energy is in agreement with previous measurements the ion yields at x-ray energies below 6 keV are lower than predicted by theory. The ionization current at the Sn L3 edge of solutions of tetramethyltin in 2,2,4,4-trimethylpentane (TMP) and toluene exhibits an inverted edge jump at various concentrations as expected from theory. Luminescence yield at the Sn L3 edge for a solution of tetramethyltin in toluene also exhibits the same inversion behavior, in general accord with previous results and the current understanding of edge jump behavior studies in liquids.
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