HOPG分光晶体

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。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

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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°

2-1mm

10 mm x 10 mm

30 mm x 20 mm

AGraphY

0.8±0.2°

2-1mm

10 mm x 10 mm

50 mm x 50 mm

AGraphZ

1.7±0.4°

2-1mm

10 mm x 10 mm

50 mm x 50 mm

AGraphZ

3.5±1.5°

2-1mm

10 mm x 10 mm

50 mm x 50 mm

single-bent HOPG*
R=450, 220, 145 mm

0.4±0.1°

2-1mm

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)


北京众星联恒科技有限公司HOPG分光晶体 datasheet 2020.7.15.pdf

发表文章:


Conventional graphite monochromators

1. M.Sanchez del Rio, M.Gambaccini, G.Pareschi, A.Taibi, A.Tuffanelli and A.Freund, "Focusing properties of mosaic crystals", Proceedings of SPIE, Vol. 3448, pp. 246-255 (1998).

2. A.Tuffanelli, M.Sanchez del Rio, G.Pareschi, M.Gambaccini, A.Taibi, A.Fantini and M.Ohler, "A comparative characterization of Highly Oriented Pyrolytic Graphite by meansof diffraction topography", Proceedings of SPIE,Vol. 3773, pp. 192-198 (1999).

3. Ya.I.Nesterets et.al., "Application of the Statistical Dynamical Theory of X-Ray Diffraction to Calculation ofthe HOPG",  phys. stat. sol. (a) Vol. 179, p. 311 (2000).

4. L.Alianelli, M.Sanchez del Rio and R.Felici, "Study of models for ray-tracing simulations of thermal neutron monochromators", Proceedings of SPIE, Vol. 4509,p. 135-144 (2001).

5. A.Tuffanelli, A.Taibi, G.Baldazzi, D.Bollini, M.Gombiab, L.Ramello and M.Gambaccini, "Novel x-ray source for dual-energy subtraction angiography", Proceedings of SPIE, Medical Imaging Conference 2002, (MI4682-33).

6. M.Schollmeier, G.Rodrıguez Prieto, F.B.Rosmej, T.Schlegel, Y.Maron and D.H.H.Hoffmann, "Investigation laser-produced chlorine plasmas for x-ray scattering experiments".

Doubly bent and small radii graphite monochromators

7. A.A.Antonov, V.B.Baryshev, I.G.Grigorieva, G.N.Kulipanov, Ya.V.Terekhov, N.N.Shipkov, "First results on application of short-focus monochromators from formed pyrolytic graphite for X-ray fluorescent analysis using synchrotron radiation", Rev. Sci. Instr., Vol. 60, pp. 2462-2463 (1989).

8. P.Chevallier, I.Brissand, J.X.Wang, "Quantitative analysis by synchrotron radiation induced X-ray fluorescence at LURE", Nucl. Instr. Meth., Vol. B49,pp. 551-554 (1990).

9. V.M.Levin, A.A.Anotonov, I.G.Grigorieva et al., "Investigation of acoustical properties of carbon materials and composites", Institute of Chemical Physics of RAS, Report No. 30-89, Moscow (1990).

10. G.E.Ice, C.J.Sparks, Jr., "Mosaic Crystal X-ray spectrometer to resolve inelastic background from anomalous scattering experiments", Nucl. Instr. Meth., Vol. A291, pp. 110-116 (1990).

11. A.A.Antonov, V.B.Baryshev, I.G.Grigorieva, G.N.Kulipanov and N.N.Shipkov, "Focusing shaped pyrographite monochromators in synchrotron radiation experiments", Nucl. Instr. Meth., Vol. A308, pp. 442-446 (1991).

12. B.Kanngiesser, B.Beckhoff, J.Scheer, W.Swoboda, "The Comparison ofThree Excitation Modes in the Energy Dispersive X-Ray Fluorescence Analysis", Advances in X-Ray Analysis, Vol. 35, pp. 1001-1007 (1992).

13. B.Beckhoff, J.Laursen, "Bent and Flat Highly oriented Pyrolytic Graphite Crystals as Small Bragg Angle Monochromators in Thin-Specimen Energy-Dispersive XRF Analysis", X-Ray Spectrometry, Vol. 23, pp. 7-18 (1994).

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).

16. I.P.Dolbnya, K.Zolotarev, M.A.Sheromov, A.A.Antonov and I.G.Grigorieva, "Focusing parabolic pyrolytic graphite X-ray monochromator", Nucl. Instr. Meth.,Vol. A359, pp. 141-145 (1995); ibid. Vol. A370, pp. 646-647 (1996).

17. D.M.Pease, M.Daniel, J.I.Budnick, T.Rhodes, M.Hammes, D.M.Potrepka, K.Sills,C.Nelson, S.M.Heald, D.I.Brewe, A.Frenkel, I.Grigorieva and A.Antonov, "Log spiral of revolution highly oriented pyrolytic graphite monochromator for fluorescence x-ray absorption edge fine ...", Rev. Scien. Instr., Vol.71, pp. 3267-3273 (2000).

18. D.M.Pease, M.Daniel, J.I.Budnick, B.Taylor, A.Frenkel, K.Pandya,I.G.Grigorieva, and A.A.Antonov, "Extension of a tuned log spiral of revolutionfluorescence XAFS detector, designed for optimal detection of a particularelement Z, to XAFS of elements other than Z", J. Synchrotron Rad., 8 , 336-338 (2001).

19. A.I.Frenkel, D.M.Pease, J.Giniewicz, E.A.Stern, D.L.Brewe, M.Daniel,and J.Budnick, "Measurement of Ti,Ta, and Sc Off-Center Displacements in Relaxor Ferroelectrric PST - PT",  Science Highlights from the National Synchrotron Light Source, Brookhaven National Laboratory (2004).

20.  A.I.Frenkel, D.M.Pease, G.Giniewicz, E.A.Stern, D.L.Brewe, M.Daniel, J.Budnick, "Concentration-dependent short range order in relaxor ferroelectric (1-x) Pb(Sc,Ta)O3-xPbTiO3", Physical Review B, Vol. 70, (2004).

21. J.Heckel, R.W.Ryon, "Polarized beam X-ray Fluorescence Analysis", Handbook of X-Ray Spectrometry, 2nd edit., Marcel Dekker Inc., New York Basel, 2002, pp. 603-630.

22. I.G.Grigorieva, A.A.Antonov, "HOPG as powerful x-ray optics",X-Ray Spectrometry, Vol. 32, pp. 64-68 (2003).

23. A.Shevelko, A. Antonov, I.Grigorieva et.al. "X-ray focusing crystal vonHamos spectrometer with a CCD linear array as a detector", Proceedings of SPIE, Vol.4144, pp.148-154 (2000).

24. A.P.Shevelko, Yu.S.Kasyanov, O.F.Yakushev, L.V.Knight, "Compact focusingvon Hamos spectrometer for quantitative X-ray spectroscopy", Rev.Sci.Instr., Vol. 73, pp. 3458-3463 (2002).

25. Y.Kolmogorov, V.Trounova, "Analytical potential of EDXRF using toroidal focusing systems of highly oriented pyrolitic graphite (HOPG)", X-Ray Spectrometry, Vol. 31, pp. 432-436 (2002).

26. I.Uschmann, U.Nothelle, E.Förster, V.Arkadiev, N.Langhoff, A.Antonov, I.Grigorieva, R.Steinkopf, A.Gebhardt, "High efficiency, high quality x-ray optics based on ellipsoidally bent HOPG crystals for ultrafast x-ray diffraction experiments", Applied Optics, Vol. 44, pp. 5069-5075 (2005).

27. H.Legall, H.Stiel, P.V.Nickles, A.A.Bjeoumikhov, N.Langhoff, M.Haschke, V.A.Arkadiev, R.Wedell, "Applications of Highly Oriented Pyrolytic Graphite (HOPG) for x-ray diagnostics and spectroscopy", Proceedings of SPIE, Vol. 5918, pp. 11-21 (2005).

28. V.Mikerov et. all., "A parabolic Concentrator for Thermal Neutrons", Physica Scripta, Vol. 55, pp. 30-22 (1997).

29. Parabolic Concentrator for Neutrons


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