Fluorescence cross‐sections for L shell x‐ray lines

Abstract

Absolute values of x-ray fluorescence (XRF) cross-sections for L a lines have been calculated for all the elements with 47 S 2 G 92 at two exciting energies corresponding to Ag and Te K x-rays from '"Cd and '%I radioisotopes, respectively. The effect of hole transfer within L subshells is also included when calculating the cross-sections. Experimental measurements were carried out for La, L, and L,,,, x-ray fluorescence cross-sections for some of the elements ranging from Ho to c' using exciter sources of lo9Cd and '*'I. Average L shell fluorescence yields were also obtained using the measured values of total L shell x-ray fluorescence cross-sections and the theoretical values of photoelectric cross-sections.

Morphological differentiation among species of the genus Mugil Linnaeus, 1758 (Mugilidae) from Côte d’Ivoire

“…Targets of pure elements, having physical cross-section areas similar to those used in the main experiment, with atomic number 22 ≤ Z ≤ 29, emitting fluorescent x-rays in the energy range 5.5-8.7 keV, were irradiated in the same geometry, and from which the emitted fluorescence x-rays were counted. I o Gε value for the present set up were determined by the following relationship [16][17][18],…”

Chemical Effects on L Shell Cross-Sections and Fluorescence Yields of Th and U Compounds

“…Then the net peak area was found out by subtraction of the background from the total peak area. The L ; L ; L and L X-ray fluorescence cross-sections have been calculated using the equation [26][27][28][29][30],…”

“…L shell or subshell X-ray fluorescence cross-sections and fluorescence yields are important because of their wide use in the fields of atomic and molecular physics, X-ray fluorescence analysis and industry. L X-ray fluorescence cross-sections of many elements have been reported [1][2][3][4][5][6][7][8]. Theoretical L X-ray fluorescence cross-sections were studied by some researchers [9].…”

Variation of K X-Ray Fluorescence Cross-Sections for Elements in the Range 22 ≤ Z ≤ 29 at Various Energies

“…[19][20][21] I 0 G" values in the present experimental set-up were determined in a separate experiment.…”