Enhancement of microbeam x-ray fluorescence analysis using monolithic polycapillary focusing optics

Autor:	D. A. Carpenter, W. M. Gibson, Qi-Fan Xiao, Ning Gao, I. Yu. Ponomarev
Rok vydání:	1997
Předmět:	Materials science Photon Optics Physics and Astronomy (miscellaneous) business.industry X-ray fluorescence X-ray optics Focal Spot Size Microbeam business Beam (structure) Intensity (physics) Line (formation)
Zdroj:	Applied Physics Letters. 71:3441-3443
ISSN:	1077-3118 0003-6951
DOI:	10.1063/1.120360
Popis:	A monolithic polycapillary focusing optic was tested in the microbeam x-ray fluorescence system at the Oak Ridge Center for Manufacturing Technology. The optic was designed to cover a wide energy range from 4 keV to 20 keV. The focal spot size of the output beam at 17.4 keV (Mo Kα) was measured to be 21 μm full width of half maximum. An average beam intensity of 1.5×105 photon/s/μm2 was obtained at the focus for Mo Kα line using a 12 W microfocus x-ray source. This intensity is about 2400 times over that of a direct beam at 100 mm away from the x-ray source. The small, intense x-ray beam obtained was used to analyze and map the compositions of different elements in industrial samples.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::5202436902ecf224bae9a14f958be190 https://doi.org/10.1063/1.120360 Zobrazit plný text záznamu