Study on the dispersion characteristics of Laue bent crystal by ray-tracing

CHEN Can; TONG Yajun; XU Zhaoqian; MAO Dingli; XIAO Tiqiao

doi:10.11889/j.0253-3219.2015.hjs.38.040101

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Study on the dispersion characteristics of Laue bent crystal by ray-tracing

更新时间：2021-03-03

- Study on the dispersion characteristics of Laue bent crystal by ray-tracing
- NUCLEAR TECHNIQUES Vol. 38, Issue 4, Article number: 040101(2015)
- 作者机构：
  
  1. 浙江省计量科学研究院,杭州,310018
  2. 中国科学院上海应用物理研究所嘉定园区,上海,201800
- 作者简介：
- 基金信息：
- DOI：10.11889/j.0253-3219.2015.hjs.38.040101
  CLC：
- Published：09 April 2015
- 稿件说明：
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CHEN Can, TONG Yajun, XU Zhaoqian, et al. Study on the dispersion characteristics of Laue bent crystal by ray-tracing[J]. Nuclear techniques, 2015, 38(4): 040101
DOI：

CHEN Can, TONG Yajun, XU Zhaoqian, et al. Study on the dispersion characteristics of Laue bent crystal by ray-tracing[J]. Nuclear techniques, 2015, 38(4): 040101 DOI： 10.11889/j.0253-3219.2015.hjs.38.040101.

摘要

劳厄弯晶具有可有效降低高热负载的影响，同时对透射光可以再次利用，已作为高通量密度高能X射线(30 keV以上)聚焦、准直和单色化的最有效的分光元件。研究其色散特性，对发展高性能、多用途的劳厄弯晶单色器具有重要意义。采用自行发展的光线追迹软件对劳厄弯晶的色散特性进行了深入研究，得到衍射光能量随光斑的分布情况以及利用单块劳厄弯晶获得可聚焦不同能量射线束的选取方法，并推导了双光束中心能量及带宽的一般公式，为下一步更好地应用劳厄弯晶打下了基础。

Abstract

Background and Purpose: The Laue bent crystal is one of the most effective optical elements for focusing

collimating and monochromating of high flux density high energy X-rays (above 30 keV)

because of its excellent performance in reducing the high heat load effectively and reusing of transmission beam directly. The dispersion characteristics is very important for developing high performance and multipurpose Laue bent crystal monochromator. Methods: Self-developed X-ray trace program was employed to study the dispersion characteristics of Laue bent crystal in aspects of diffraction

focus

etc. Results: The distribution of diffraction energy with the beam spot was obtained and the focused beams with different energies created by single Laue bent crystal were got. The general formula of center energy and energy bandwidth of the double beam was also derived. Conclusion: This research provides a basis for the further application of Laue bent crystal. Abstract

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