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Proceedings Paper

A sort of pulsed microfocal x-ray source
Author(s): Kaige Wang; Baoping Guo; Jinchuan Guo; Ji Li; Qinlao Yang; Xiaomei Kuo; Junlan Zhou; Hanben Niu
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Paper Abstract

A sort of pulsed microfocus x-ray source has been theoretically and experimentally studied. The portable x-ray source is composed of three portions: LaB6 crystal cathode electron gun emitting system, electrostatic focusing system, and metal target system. The electrons are emitted form the hot crystal cathode, and controlled by modulated Wehnelt grid bias value and the ratio Dw/H, and concentrated by two-equal-radius-cylinder-electrodes focusing system. The x-ray photons are irradiated by high energy electron beam bombarding metal target. The new x-ray source's general-purpose capabilities such as pulsed radiation, focal spot size and luminance were preliminary tested. When the temperature of LaB6 cathode is about 1900K and partial pressures being kept below 10-7 torr, the minimal focus diameter is merely about 10 microns with the pulse width 65ms.

Paper Details

Date Published: 11 January 2007
PDF: 7 pages
Proc. SPIE 6279, 27th International Congress on High-Speed Photography and Photonics, 627914 (11 January 2007); doi: 10.1117/12.725163
Show Author Affiliations
Kaige Wang, Shenzhen Univ. (China)
Baoping Guo, Shenzhen Univ. (China)
Jinchuan Guo, Shenzhen Univ. (China)
Ji Li, Shenzhen Univ. (China)
Qinlao Yang, Shenzhen Univ. (China)
Xiaomei Kuo, Shenzhen Univ. (China)
Junlan Zhou, Shenzhen Univ. (China)
Hanben Niu, Shenzhen Univ. (China)


Published in SPIE Proceedings Vol. 6279:
27th International Congress on High-Speed Photography and Photonics

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