Transition assignments to Lβ 1 satellites in X-ray emission spectra of middle- Z elements

Abstract

The X-ray satellite spectra arising due to 2 p 1/23x – 3x3 d ( x≡s, p, d) transition array, in elements with Z=42 to 50, have been calculated. The energies of various transitions of the array are determined by using available HFS data on 1 s – 2 p3x and 2 p 1/2 –( 3x, 3x′) Auger transition energies, while their relative intensities are estimated by considering cross sections of singly ionized 2x ( x≡s, p) states and then of subsequent Coster Kronig transitions and shake off processes. The calculated spectra are compared with the measured satellite energies in Lβ 1 spectra. Their intense peaks are identified as the observed satellite lines. One-to-one correspondence between the peaks in calculated spectra and the satellites in measured spectra has been established on the basis of the agreement between the separations in the peak energies and those in the measured satellite energies. Four satellites observed in the Lβ 1 region of the X-ray spectra of various elements, β 1 I, β 1 II, β 1 III and β 1 IV in order of increasing energy, are assigned mainly to those emitted by 2 p 1/23 d – 3 d 2 transitions. The satellite β 1 I is assigned to the superposition of the transitions 3P 2– 3P 2 and 3P 2– 3P 1 and the most intense line β 1 II is assigned mainly to the 3F 3– 3F 3 and 3F 2– 3F 2 transitions. Further, the satellite β 1 III is associated with the transition 3F 3– 3F 4. Finally, the line β 1 IV is assigned to the 3D 1– 3F 2 transition. The possible contributions of other transitions of the 2 p 1/23x – 3x3 d ( x≡s, p, d) array have intensities comparable with the above transitions, and the corresponding lines which have not yet been observed, are also discussed.