J. Phys. Colloques
Volume 48, Numéro C9, Décembre 1987X-Ray and Inner-Shell Processes
|Page(s)||C9-625 - C9-628|
J. Phys. Colloques 48 (1987) C9-625-C9-628
FLUORESCENCE YIELD OF DOUBLE K VACANCIES IN KRYPTONM. HRIBAR, A. KODRE and D. GLAVIC
VTO Fizika FNT and Institute J. Stefan, E. Kardelj University of Ljubljana, PO Box 199/IV, YU-61001 Ljubljana, Yugoslavia
The formation of double K-shell vacancy in absorption of single photon is studied in krypton. A multiwire wall-less proportional counter filled with a mixture of krypton and propane is used to detect the double vacancies separately according to their mode of decay. The analysis of spectra of pulses demonstrated the independent particle model of decay to be inappropriate. Using the collective model the probabilities for radiative, radiative-nonradiative and nonradiative modes in the decay of double vacancy state were preliminary determined as < 0.1 ± 0.1, 0.35 ± 0.05 and 0.54 ± 0.05, respectively. The double K-shell ionization cross section at the edge was determined to be less than 8.2(E-3) of the total photoelectric cross section.