Johansson crystals for x-ray diffractometry and demanding spectroscopy applications

Boris Verman; Bodo Ehlers; Bonglea Kim; Doug Wilcox; Licai Jiang

doi:10.1117/12.893739

28 September 2011 Johansson crystals for x-ray diffractometry and demanding spectroscopy applications

Boris Verman, Bodo Ehlers, Bonglea Kim, Doug Wilcox, Licai Jiang

Proceedings Volume 8139, Advances in X-Ray/EUV Optics and Components VI; 81390L (2011) https://doi.org/10.1117/12.893739
Event: SPIE Optical Engineering + Applications, 2011, San Diego, California, United States

Abstract

Johansson crystals have been known for many decades as x-ray optical elements with a high resolving power and small foci. However, in the past their use in applications requiring a small focus and a narrow band pass were limited by imperfections caused by the technologies applied to their manufacture. While high performance Johansson crystals might have been achieved in some research facilities, such crystals were not commercially available. RIT has developed a process for fabricating precision Johansson crystals. The fabrication maintains the crystal structure intact. The angular precision of the bending process of atomic planes and the reflecting crystal surface is better than four arc seconds. In this paper, we will present the basic aspects of the technology and the achievements with Silicon and Germanium crystals.

Citation Download Citation

Boris Verman, Bodo Ehlers, Bonglea Kim, Doug Wilcox, and Licai Jiang "Johansson crystals for x-ray diffractometry and demanding spectroscopy applications", Proc. SPIE 8139, Advances in X-Ray/EUV Optics and Components VI, 81390L (28 September 2011); https://doi.org/10.1117/12.893739

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