HOPG分光晶体
高定向热解石墨(HOPG) HOPG是一种新型高纯度炭材料，是热解石墨经高温高压处理后制得的一种新型炭材料，其性能接近单晶石墨，其常被用于x射线和中子的单色器和聚焦光学元件。
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高定向热解石墨(HOPG)
HOPG是一种新型高纯度炭材料，是热解石墨经高温高压处理后制得的一种新型炭材料，其性能接近单晶石墨，其常被用于x射线和中子的单色器和聚焦光学元件。HOPG的一些典型参数如下表所示。
层间距（002） | 3.354-3.358 Å |
纯度 | >99.99% |
能量范围 | 2-120KeV |
反射效率 | 15-50% |
积分反射率 | 高达0.01Rad |
摇摆曲线宽度 | 0.3º-0.4º |
俘获立体角 | 高达0.1 sr |
聚焦光斑尺寸 | 100-500 µm |
可提供的平的和柱面弯曲HOPG晶体：
级别 | 马赛克扩散/镶嵌角 | 常规厚度 | 最小尺寸 | 最大尺寸 |
AGraphZ | 0.4±0.1° | 2（-1）mm | 10 mm x 10 mm | 30 mm x 20 mm |
AGraphY | 0.8±0.2° | 2（-1）mm | 10 mm x 10 mm | 50 mm x 50 mm |
AGraphZ | 1.7±0.4° | 2（-1）mm | 10 mm x 10 mm | 50 mm x 50 mm |
AGraphZ | 3.5±1.5° | 2（-1）mm | 10 mm x 10 mm | 50 mm x 50 mm |
single-bent HOPG* | 0.4±0.1° | 2（-1）mm | 10 mm x 10 mm | 50 mm x 50 mm |
*除了single-bent HOPG以外还可以提供double-bent HOPG，包括：大曲率的柱面、圆锥面、球面、超环面和抛物面等。
X射线衍射（XRD）
X射线荧光（XRF）
HOPG石墨晶体 datasheet 2022.4.24.pdf
发表文章：
Conventional graphite monochromators
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14. B.Beckhoff, "X-ray focusing with Strongly Curved HOPG Crystals inthe Energy-DispersiveX-ray Fluorescence Analysis", Ph.D. thesis, University of Bremen (1995).
15. B.Beckhoff, B.Kanngiesser, J.Scheer, W.Swoboda and J.Laursen, "Toroidally Shaped HOPG crystals as Strongly Focusing Bragg Reflectors of Characteristic X-ray Tube Radiation for EDXRF Analysis", Advances in X-Ray Analysis, Vol. 37, pp. 523-533 (1994).
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19. A.I.Frenkel, D.M.Pease, J.Giniewicz, E.A.Stern, D.L.Brewe,
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vonHamos spectrometer with a CCD linear array as a detector", Proceedings of SPIE, Vol.4144, pp.148-154 (2000).
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29. Parabolic
Concentrator for Neutrons