Jpn. J. Appl. Phys. 45 (2006) pp. 5277-5279  |Previous Article| |Next Article|  |Table of Contents|
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Brief Communication

Quantitative Method of Measuring Spot Size of Microfocus X-ray Generator

Hiroyuki Uchida, Kazuto Hasuike, Ken'ichi Torii and Hiroshi Tsunemi

(Received February 8, 2006; revised March 1, 2006; accepted March 8, 2006; published online June 8, 2006)

Microfocus X-ray generators have been extensively used for magnification radiography. In these applications, the sharpness of an image depends on the X-ray source size. Therefore, it is important to evaluate and optimize the X-ray spot quantitatively. Although several methods have been devised to date, some require complicated systems whereas others are not fully quantitative. Here, we introduce a simple, practical, and quantitative method that makes use of the penumbra of a knife edge. Because the method is very simple, it can be readily integrated as an auto focusing system of a focal spot.

KEYWORDS: microfocus, X-ray, focal spot size, magnification radiography
URL: http://jjap.ipap.jp/link?JJAP/45/5277/
DOI: 10.1143/JJAP.45.5277

References | Citing Articles (2)

1. S. Aoki and Y. Sakayanagi: Jpn. J. Appl. Phys. 20 (1981) 2419[IPAP].
2. S. A. Watson: Proc. Particle Accelerator Conf., 1993, Vol. 3, p. 1447.
3. M. Trefler and J. E. Gray: Appl. Opt. 15 (1976) 3099.
4. N. Nakamura, H. Sakai, K. Iida, K. Shinoe and H. Takai: Proc. Particle Accelerator Conf., 2003, Vol. 1, p. 530.
5. S. Takano, M. Masaki and H. Ohkuma: Proc. 7th European Workshop Beam Diagnostics and Instrumentation for Particle Accelerator, 2005, p. 239.
6. H. Tsunemi, S. Nomoto, K. Hayashida, E. Miyata, H. Murakami, Y. Kato, G. Yuan, K. Murai, R. Kodama and H. Daido: Appl. Phys. B 57 (1993) 331.