Precise measurement of the KLL and KLX Auger spectra of cadmium from the EC-decay of 111In

• Published in: Journal of electron spectroscopy and related phenomena Vol. 105; no. 2; pp. 219 - 229
• Main Authors: Kovalı́k, A., Yakushev, E.A., Filosofov, D.V., Gorozhankin, V.M., Petev, P.A., Mahmoud, M.A.
• Format: Journal Article
• Language: English
• Published: Elsevier B.V 01.12.1999
• Subjects: 111Cd; 111In; Auger effect; Auger transitions; Electron spectroscopy; KLL transitions; KLM transitions; Auger effect; KLL transitions; KLM transitions; Electron spectroscopy; 111Cd; Auger transitions; 111In
• ISSN: 0368-2048; 1873-2526
• DOI: 10.1016/S0368-2048(99)00059-6

The KLL and KLX Auger spectra of Cd from the EC-decay of 111In have been analyzed with the 7 eV instrumental resolution using a combined electrostatic spectrometer and a source prepared by a modified Langmuir–Blodgett method. Energies and relative intensities of all the nine well resolved KLL lines have been precisely determined. While the latter quantities were found to be in very good agreement with the relativistic intermediate coupling calculations, the former ones deviate from results of the widely used semi-empirical calculations especially in the case of the absolute energies. The predicted strong influence of the relativistic effects on the KL 1L 2( 3P 0) transition intensity has been proved. Most of the main KLX Auger lines have been well separated and their complex structures have been observed. Accurate energies and intensities obtained for these lines have been compared with results of calculations. The intermediate coupling splitting of the KL 2L 2 and KL 3L 3 lines have been revealed. The KLX/KLL, KLN(O)/KLM, and KXY/KLL group intensity ratios have also been determined. A conclusion is made that further finer theoretical investigation on the complex interaction mechanism for two inner-shell vacancies is still very much needed.