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Browsing by Author "Tan, Mustafa"

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    Measurements of Coster-Kronig Enhancement Factors for 69tm
    (Elsevier Science Bv, 2011) Yilmaz, Rafet; Arici, Kani; Oz, Elif; Tan, Mustafa
    Coster-Kronig processes are non-radiative transitions in which an inner-shell vacancy is transferred from one subshell of an atom to another. In this work, X-ray fluorescence cross-sections (sigma(Li), i = alpha, beta, & gamma, ) of the Tm element were measured at excitation energies of each L-i (i = 1, 2 and 3) subshells. Experimental measurements have been performed using an (24) Am annular source and a Si(Li) dedector. Absolute values of L X-ray cross-sections were calculated with incorporation of the enhancement due to the Coster-Kronig effect for Tm. The measured enhancement factors are smaller than the theoretically calculated values. (C) 2011 Elsevier B.V. All rights reserved.