Noticias
16.01.2014
|
|
|
El Dr. Xavier Llovet, responsable de la Tecnología de Microsonda Electrónica, ha publicado el artículo “Measurements of absolute L- and M-subshell x-ray production cross sections of Pb by electron impact” a la revista JOURNAL OF PHYSICS B: ATOMIC, MOLECULAR AND OPTICAL PHYSICS. El resumen del artículo es el siguiente: "Absolute L- and M-subshell x-ray production cross sections of Pb have been measured for incident electron energies ranging from 3 to 38keV. The experimental cross sections were obtained by measuring Lα, Lβ, Mα, Mβ and Mγ x-ray intensities emitted from ultra thin Pb films deposited onto self-supporting thin Cfilms. Measurements were performed on two electron microprobes using wave length-dispersive spectrometers. X-ray intensities were converted into x-ray production cross sections by using estimated values of the number of incident electrons,target thickness and spectrometer efficiency. Experimental results are compared with calculated cross sections obtained using different predictive formulae,and, whenever possible, with experimental data from the literature." | |