Constant-pitch microprism-array optical device for beam condensers in hard x-ray synchrotron radiation beamlines

Y. Kagoshima, H. Takano, S. Takeda

研究成果: Article査読

1 被引用数 (Scopus)

抄録

A constant-pitch microprism-array optical device has been developed. It is a modified version of the previously reported quasi-Fresnel lens [Kagoshima, Appl. Phys. Lett. 101, 163102 (2012)]. The modification eases the fabrication of the lens, although it degrades some of the focusing performance. It consists of twenty 50-μm-wide right-angle microprisms, whose slope angles gradually increase to 67.8° at the outer side. By inclining the array, the aspect ratio of the microprisms becomes large enough for X-ray use. The effective slope angle can be enlarged to 86.4° at an inclination angle of 80.5°. A 10-keV synchrotron beam with a size of 680 μm (V) × 660 μm (H) was two-dimensionally condensed to 130 μm (V) × 380 μm (H) with a photon flux density gain of ∼3. We also show that the microprism array is suitable for practical use below the critical radiation dose rate.

本文言語English
論文番号214314
ジャーナルJournal of Applied Physics
113
21
DOI
出版ステータスPublished - 2013 6月 7
外部発表はい

ASJC Scopus subject areas

  • 物理学および天文学(全般)

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