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The Recessed Source Geometry for Source Excited X-Ray Fluorescence Analysis

Published online by Cambridge University Press:  06 March 2019

C. A. N. Conde  and
J. M. F. dos Santos
C. A. N. Conde
Affiliation:
Physics Department University of Coimbra 3000 Coimbra, Portugal
J. M. F. dos Santos
Affiliation:
Physics Department University of Coimbra 3000 Coimbra, Portugal
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Abstract

Different geometries are considered for source excited energy-dispersive X-ray fluorescence (EDXRF) analysis Systems, including the recessed source geometry introduced in the present work. The calculated physical excitation-detection efficiencies, for the side (or annular), central, receded and recessed source geometries are presented as a function of the target to source distance, for Ca, K, S and Si targets excited with a Fe-55 XBF-3 X-ray source and xenon filled gas proportional scintillation counters. The last two geometries present in gênerai the highest efficiencies. The recessed source geometry présent the best performance with peak efficiencies a factor of 3.3 better than those for the standard side or annular source geometries.

Type
Research Article
Information
Advances in X-Ray Analysis , Volume 29: Thirty-Fourth Annual Conference on Applications of X-ray Analysis, August 5-9, 1985 , 1985 , pp. 545 - 550
Copyright
Copyright © International Centre for Diffraction Data 1985

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