Accurate measurement ofKx-ray intensities of elements withZ=79–82

Abstract

Using high-resolution and high-e5ciency high-purity Ge Gamma-X detectors, relative intensities of K x rays of elements with Z =79-82 have been very accurately (uncertainty =1%)determined. Comparison of the data with other experimental works and theoretical calculations have been done. It is seen that a theory with the exchange efFect taken into consideration is quite adequate to explain the radiative transition rates for the elements measured in the present work.PACS number(s): 32.30.Rj, 32.70.Fw

L-shell radiative transition rates by selective synchrotron ionization

“…Transition rates to K-shell vacancy states were studied by means of theoretical assessments [1,2] and experimental determinations (see, e.g., [3] or [4]). However, measurements involving L-shell transitions are scarcely available, due to several experimental complications that arise in determining intensities of lines with similar energies.…”