title: [Application of confocal micro-beam X-ray fluorescence in nondestructive scanning analysis of the distribution of elements in a single hair].
abstract: The confocal micro X-ray fluorescence (XRF) based on polycapillary X-ray lens and conventional X-ray source was used to carry out the scanning analysis of the distribution of the elements in a single hair. The elemental distribution in the single hair was obtained. In the confocal micro XRF technology, the output focal spot of the polycapillary focusing X-ray lens and the input focal spot of the polycapillary parallel X-ray lens were adjusted confocally. The detector could only detect the X-rays from the overlapping foci. This confocal structure decreased the effects of the background on the X-ray spectra, and was accordingly helpful for improving the accuracy of this XRF technology. A polycapillary focusing X-ray lens with a high gain in power density was used to decrease the requirement of power of the X-ray source used in this confocal technology, and made it possible to perform such confocal micro XRF analysis by using the conventional X-ray source with low cost. Experimental results indicated that the confocal micro X-ray fluorescence based on polycapillary X-ray lens had potential applications in analyzing the elemental distribution of individual hairs.
authors.affiliation: The Key Laboratory of Beam Technology and Material Modification of the Ministry of Education, Beijing Normal University, College of Nuclear Science and Technology, and Beijing Radiation Center, Beijing 100875, China. hh19213@163.com
authors.forename: He-He
authors.initials: HH
authors.lastname: Liu
authors.affiliation: The Key Laboratory of Beam Technology and Material Modification of the Ministry of Education, Beijing Normal University, College of Nuclear Science and Technology, and Beijing Radiation Center, Beijing 100875, China.
authors.forename: Zhi-Guo
authors.initials: ZG
authors.lastname: Liu
authors.affiliation: The Key Laboratory of Beam Technology and Material Modification of the Ministry of Education, Beijing Normal University, College of Nuclear Science and Technology, and Beijing Radiation Center, Beijing 100875, China.
authors.forename: Tian-Xi
authors.initials: TX
authors.lastname: Sun
authors.affiliation: The Key Laboratory of Beam Technology and Material Modification of the Ministry of Education, Beijing Normal University, College of Nuclear Science and Technology, and Beijing Radiation Center, Beijing 100875, China.
authors.forename: Song
authors.initials: S
authors.lastname: Peng
authors.affiliation: The Key Laboratory of Beam Technology and Material Modification of the Ministry of Education, Beijing Normal University, College of Nuclear Science and Technology, and Beijing Radiation Center, Beijing 100875, China.
authors.forename: Wei-Gang
authors.initials: WG
authors.lastname: Zhao
authors.affiliation: The Key Laboratory of Beam Technology and Material Modification of the Ministry of Education, Beijing Normal University, College of Nuclear Science and Technology, and Beijing Radiation Center, Beijing 100875, China.
authors.forename: Wei-Yuan
authors.initials: WY
authors.lastname: Sun
authors.affiliation: The Key Laboratory of Beam Technology and Material Modification of the Ministry of Education, Beijing Normal University, College of Nuclear Science and Technology, and Beijing Radiation Center, Beijing 100875, China.
authors.forename: Yu-De
authors.initials: YD
authors.lastname: Li
authors.affiliation: The Key Laboratory of Beam Technology and Material Modification of the Ministry of Education, Beijing Normal University, College of Nuclear Science and Technology, and Beijing Radiation Center, Beijing 100875, China.
authors.forename: Xiao-Yan
authors.initials: XY
authors.lastname: Lin
authors.affiliation: The Key Laboratory of Beam Technology and Material Modification of the Ministry of Education, Beijing Normal University, College of Nuclear Science and Technology, and Beijing Radiation Center, Beijing 100875, China.
authors.forename: Guang-Cui
authors.initials: GC
authors.lastname: Zhao
authors.affiliation: The Key Laboratory of Beam Technology and Material Modification of the Ministry of Education, Beijing Normal University, College of Nuclear Science and Technology, and Beijing Radiation Center, Beijing 100875, China.
authors.forename: Ping
authors.initials: P
authors.lastname: Luo
authors.affiliation: The Key Laboratory of Beam Technology and Material Modification of the Ministry of Education, Beijing Normal University, College of Nuclear Science and Technology, and Beijing Radiation Center, Beijing 100875, China.
authors.forename: Xun-Liang
authors.initials: XL
authors.lastname: Ding
mesh_terms: D005453:Fluorescence; D006197:Hair / Q000737:chemistry*; D013052:Spectrometry, X-Ray Emission; D014131:Trace Elements / Q000032:analysis*
chemical_list: D014131:Trace Elements