Determination of L-subshell Coster-Kronig and fluorescence yields of lanthanum and praseodymium by synchrotron photoionization

R.A. BARREA; C. A. PÉREZ; H. J. SÁNCHEZ

SPECTROCHIMICA ACTA PART B-ATOMIC SPECTROSCOPY

Año: 2003 vol. 58 p. 51 - 62

0584-8547

The method of selective photoionization of individual subshells by monochromatized synchrotron radiation hasbeen employed to measure independently all Coster–Kronig and fluorescence yields of the La and Pr L subshells.The energy of the primary radiation was set at approximately 50 energy points in the range of the L edges. At eachsetting, the induced L fluorescence radiation was recorded by a Si(Li) detector. A foilof Ti was used for normalizationpurposes and the Ti K fluorescence lines were also recorded with the same solid state detector. Fitting the measuredfluorescence intensities vs. primary energy with the photoelectric cross-sections derived the Coster–Kronig coefficientsand fluorescence yields. The obtained yields were compared with tabulated data and a good agreement among themwas found.
2002 Elsevier Science B.V. All rights reserved.