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Proceedings Paper

Energy-selective laser-based x-ray source for mammography
Author(s): Andrzej Krol; Jean-Claude Kieffer; Walter Huda; Zhiming Jiang; Charles C. Chamberlain; Jianfan Yu
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Paper Abstract

X-ray spectra suitable for mammography, created by laser-based x-ray source at laser intensity about 1018 W/cm2, where investigated. The spectra consisted of a continuous bremsstrahlung emission and discrete K(alpha ), K(beta ) lines and have been obtained for Mo, Rh, Ag, In and Sn targets (Z equals 42, 45, 47, 49, and 50) with K(alpha ) emissions at 17.4, 20.2, 22.2, 24.2, and 25.3 keV, respectively. The continuous bremsstrahlung component extended to high energies with no cut-off energy. The shape of the continuous bremsstrahlung spectrum was described by the function E-p, where p (greater than 0) was primarily determined by the temperature of hot electrons produced in laser beam- target interaction. The absolute value of x-ray yield was proportional to the atomic number of the target Z. The intensity of characteristic x-rays was about a factor of five higher than the corresponding bremsstrahlung, and showed weak dependence (increase) when the atomic number of the target increased from Z equals 42 to Z equals 50.

Paper Details

Date Published: 24 July 1998
PDF: 8 pages
Proc. SPIE 3336, Medical Imaging 1998: Physics of Medical Imaging, (24 July 1998); doi: 10.1117/12.317088
Show Author Affiliations
Andrzej Krol, SUNY Health Science Ctr./Syracuse (United States)
Jean-Claude Kieffer, INRS-Energie et Materiaux/Univ. du Quebec (Canada)
Walter Huda, SUNY Health Science Ctr./Syracuse (United States)
Zhiming Jiang, INRS-Enegie et Materiaux/Univ. du Quebec (United States)
Charles C. Chamberlain, SUNY Health Science Ctr./Syracuse (United States)
Jianfan Yu, INRS-Energie et Materiaux/Univ. du Quebec (Canada)


Published in SPIE Proceedings Vol. 3336:
Medical Imaging 1998: Physics of Medical Imaging
James T. Dobbins; John M. Boone, Editor(s)

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