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Parametrization of a tabletop micro‐XRF system
Author(s) -
Šmit Žiga,
Prokeš Radek
Publication year - 2019
Publication title -
x‐ray spectrometry
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.447
H-Index - 45
eISSN - 1097-4539
pISSN - 0049-8246
DOI - 10.1002/xrs.3102
Subject(s) - bremsstrahlung , physics , lens (geology) , x ray tube , parametrization (atmospheric modeling) , detector , electron , optics , simple (philosophy) , table (database) , computational physics , distribution (mathematics) , energy (signal processing) , tube (container) , photon , anode , materials science , nuclear physics , mathematical analysis , quantum mechanics , computer science , mathematics , radiative transfer , philosophy , electrode , epistemology , composite material , data mining
A table‐top micro X‐ray fluorescence apparatus composed of a conventional X‐ray tube with a polycapillary lens and a silicon drift X‐ray detector was parametrized according to an independent parameter approach. The tube bremsstrahlung spectrum was calculated from the Bethe‐Heitler equation, convoluted by the energy distribution of radiating electrons in the target. In this paper, we propose a simple analytical approximation for this energy distribution. An analytical approximation is also proposed for transmission of the lens composed of curved capillaries.