J. Phys. Colloques
Volume 48, Numéro C9, Décembre 1987X-Ray and Inner-Shell Processes
|Page(s)||C9-621 - C9-624|
J. Phys. Colloques 48 (1987) C9-621-C9-624
MEASUREMENTS OF L-SUBSHELL FLUORESCENCE YIELDS FOR LIGHT ELEMENTSJ. AUERHAMMER, H. GENZ and A. RICHTER
Institut für Kernphysik, Technische Hochschule Darmstadt, D-6100 Darmstadt, F.R.G.
The L-subshell fluorescence yields , ωLi, have been determined for the first time for various light and medium heavy elements with 28≤Z≤47. The method applied is based on the subshell ionization by relativistic electron impact with an electron energy of Eo= 50 keV and the detection of characteristic X rays by means of a high resolution crystal spectrometer calibrated absolutely with respect to its transmission and reflectivity. The number of initial L vacancies and its subshell distribution as well as the normalized X-ray transition probabilities , the Coster-Kronig yields and the K-shell Auger transition rates are taken from theory. The results obtained for ωLi yield values that are in agreement for all three subshells with the predictions of a widely used semi-empirical formula and for ωL2 and ωL3 also with the theoretical calculation. The values of ωL1, however, exceed the theory systematically.