Comparative study of X-ray fluorescence signal collection by collimators of two types

Autor:	M. V. Chukalina, Ya. L. Shabel’nikova
Rok vydání:	2012
Předmět:	Physics Photon Physics and Astronomy (miscellaneous) business.industry Confocal X-ray fluorescence Collimator Signal law.invention Optics law Total external reflection Microelectronics Tomography business
Zdroj:	Technical Physics Letters. 38:452-455
ISSN:	1090-6533 1063-7850
DOI:	10.1134/s1063785012050288
Popis:	The response signal collection functions in a confocal setup of the X-ray fluorescence (XRF) tomography have been modeled for a polycapillary collimator and a multichannel collimator fabricated by means of microelectronic technology (MT). The dimensions of the effective collection region for the two types of collimators are compared. For the MT-fabricated device, a fraction of X-ray photons transmitted due to the total external reflection from channel walls has been evaluated. It is shown that, for a proper choice of parameters, the contribution of these photons to the collection function is negligibly small.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::7315d2ed9df6c48c0b6c0572b8629f2b https://doi.org/10.1134/s1063785012050288 Zobrazit plný text záznamu Plný text ve formátu PDF