X-ray source with microbeam

Kaige Wang; Hanben Niu

doi:10.1117/12.403951

11 October 2000 X-ray source with microbeam

Kaige Wang, Hanben Niu

Proceedings Volume 4224, Biomedical Photonics and Optoelectronic Imaging; (2000) https://doi.org/10.1117/12.403951
Event: Optics and Optoelectronic Inspection and Control: Techniques, Applications, and Instruments, 2000, Beijing, China

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.

Citation Download Citation

Kaige Wang and Hanben Niu "X-ray source with microbeam", Proc. SPIE 4224, Biomedical Photonics and Optoelectronic Imaging, (11 October 2000); https://doi.org/10.1117/12.403951

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