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Proceedings Paper

X-ray source with microbeam
Author(s): Kaige Wang; Hanben Niu
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Paper Abstract

A novel x-ray source with micro-beam which has high brightness and micrometers or sub-micrometers micro-focus comprise primarily emitting system, focusing system, and permutable metallic foil targets. In this paper, the axial potential of system has been calculated by means of Boundary element method (BEM) and the electronic trajectory was traced by Runge-kutta method, respectively. The results show that when the temperature of LaB6 cathode is about 1900K and it was set behind the Wehnelt grid accurately and correctly, with partial pressures being kept below 10-7 torr, micro-focus electron-beam (60 microampere current) focused onto the face of target adapts to the producing x-ray micro- beam requirement.

Paper Details

Date Published: 11 October 2000
PDF: 4 pages
Proc. SPIE 4224, Biomedical Photonics and Optoelectronic Imaging, (11 October 2000); doi: 10.1117/12.403951
Show Author Affiliations
Kaige Wang, Xi'an Institute of Optics and Precision Mechanics (China)
Hanben Niu, Xi'an Institute of Optics and Precision Mechanics and Shenzhen Univ. (China)

Published in SPIE Proceedings Vol. 4224:
Biomedical Photonics and Optoelectronic Imaging
Hong Liu; Qingming Luo, Editor(s)

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