Accurate measurements (mostly within 5%) of L-alpha L-beta and L-gamma x-ray emission cross sections were carried out on thick foils of elements lying in 64 <= Z <= 73 interval, stimulated by 59.54 keV photons. They can be of help as an overall reference to compare the theoretical and semi-empirical approaches by which the atomic parameters included in the expressions of L emission cross sections are evaluated. An appropriate extension of the expression linking the cross section to the counting rate measured in reflection geometry on thick targets makes it possible to overcome the difficulties arising from the width in energy of the L-beta and L-gamma groups and from the jump present in the attenuation coefficients of the target elements within the energy interval of their L-gamma emission lines.
Measurement of L X ray emission fom elements in 64_Z_73 interval stimulated by 59.54 keV photons
BARALDI, Claudio;TARTARI, Agostino;
2005
Abstract
Accurate measurements (mostly within 5%) of L-alpha L-beta and L-gamma x-ray emission cross sections were carried out on thick foils of elements lying in 64 <= Z <= 73 interval, stimulated by 59.54 keV photons. They can be of help as an overall reference to compare the theoretical and semi-empirical approaches by which the atomic parameters included in the expressions of L emission cross sections are evaluated. An appropriate extension of the expression linking the cross section to the counting rate measured in reflection geometry on thick targets makes it possible to overcome the difficulties arising from the width in energy of the L-beta and L-gamma groups and from the jump present in the attenuation coefficients of the target elements within the energy interval of their L-gamma emission lines.I documenti in SFERA sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
