A highly oriented pyrolytic graphite crystal spectrometer in von Hamos geometry for X-ray fluorescence experiments

2020 ◽  
Author(s):  
Yang Zhihao ◽  
Zhiyu Zhang ◽  
Min Lv ◽  
Zhimin Hu ◽  
Zhu An ◽  
...  
Keyword(s):  
Pyrolytic Graphite ◽  
Highly Oriented Pyrolytic Graphite ◽  
Crystal Spectrometer ◽  
Graphite Crystal ◽  
X Ray

X-ray Diffraction from Graphite in the Energy Range 2 to 8 keV

1973 ◽  
Vol 27 (6) ◽  
pp. 454-456 ◽  
Author(s):  
H. L. Kestenbaum
Keyword(s):  
Energy Range ◽  
Energy Dependence ◽  
Pyrolytic Graphite ◽  
Highly Oriented Pyrolytic Graphite ◽  
X Ray Diffraction ◽  
Graphite Crystal ◽  
X Ray

We report x-ray diffraction measurements from highly oriented pyrolytic graphite over the energy range 2 to 8 keV. The measured reflectivity exhibits an energy dependence which closely follows that predicted for an ideally imperfect graphite crystal, although the reflectivity itself is a factor of 1.5 less than the calculated value.

STM Analysis of a Chiral Helical Onedimensional Nickel(II) Coordination Polymer

2008 ◽  
Vol 63 (12) ◽  
pp. 1443-1446 ◽  
Author(s):  
Mohammad Sahabul Alam ◽  
Andreas Scheurer ◽  
Rolf W. Saalfrank ◽  
Paul Müller
Keyword(s):  
Coordination Polymer ◽  
Single Crystals ◽  
Excellent Agreement ◽  
Pyrolytic Graphite ◽  
Highly Oriented Pyrolytic Graphite ◽  
X Ray ◽  
X Ray Crystallography ◽  
Salen Complexes ◽  
Polymeric Chains ◽  
Dimeric Aggregates

C2-symmetric nickel(II) salen complexes [NiL] 1 were deposited on a highly oriented pyrolytic graphite (HOPG) surface from their acetone solutions. They aggregate easily to single, segregated, homochiral polymeric chains of (M)-1D- 1n [NiL] (2) on the substrate as also found in single crystals. In STM topography, the single helical 1D structures 2 found on the surface were in excellent agreement with the dimension of aligned dimeric aggregates of 1 obtained from X-ray crystallography. Weak intermolecular NiII...OMe coordinations (dMeO−Ni = 0.35 nm) were found to be responsible for the formation of the chiral, helical and 1D assemblies on the substrate.

Parametric x-ray radiation generated by 5.7-MeV electrons in a pyrolytic-graphite crystal

2003 ◽  
Vol 66 (2) ◽  
pp. 420-422
Author(s):  
Yu. N. Adishev ◽  
V. N. Zabaev ◽  
V. V. Kaplin ◽  
S. V. Razin ◽  
S. R. Uglov ◽  
...  
Keyword(s):  
Pyrolytic Graphite ◽  
Graphite Crystal ◽  
X Ray

Double Bragg scattering observed in small-angle X-ray scattering from highly oriented pyrolytic graphite

2016 ◽  
Vol 49 (3) ◽  
pp. 835-844 ◽  
Author(s):  
Yoshinori Ohmasa ◽  
Susumu Shimomura ◽  
Ayano Chiba
Keyword(s):  
Small Angle ◽  
Small Deviation ◽  
Pyrolytic Graphite ◽  
Bragg Scattering ◽  
Highly Oriented Pyrolytic Graphite ◽  
Finite Sample ◽  
X Ray ◽  
Sample Rotation ◽  
X Ray Scattering ◽  
Ray Scattering

In small-angle X-ray scattering from highly oriented pyrolytic graphite, radial streak patterns are observed. The streaks change their direction with sample rotation and appear and disappear in pairs. This streak pattern can be explained by double Bragg scattering. The directions of the streaks calculated as functions of the rotation angle are in good agreement with experiment. In addition, asymmetry in the intensity of the streaks and a small deviation from the radial pattern are observed, and they can be explained by the finite sample-size effect. The necessity of taking double Bragg scattering into account in small-angle X-ray scattering studies of crystalline materials is emphasized.

X-ray analysis with a highly oriented pyrolytic graphite-based von Hamos spectrometer

2007 ◽  
Vol 62 (6-7) ◽  
pp. 577-585 ◽  
Author(s):  
V.A. Arkadiev ◽  
A.A. Bjeoumikhov ◽  
M. Haschke ◽  
N. Langhoff ◽  
H. Legall ◽  
...  
Keyword(s):  
Pyrolytic Graphite ◽  
Highly Oriented Pyrolytic Graphite ◽  
X Ray

scholarly journals High spectral resolution x-ray optics with highly oriented pyrolytic graphite

2006 ◽  
Vol 14 (10) ◽  
pp. 4570 ◽  
Author(s):  
H. Legall ◽  
H. Stiel ◽  
V. Arkadiev ◽  
A. A. Bjeoumikhov
Keyword(s):  
Spectral Resolution ◽  
Pyrolytic Graphite ◽  
High Spectral Resolution ◽  
Highly Oriented Pyrolytic Graphite ◽  
Ray Optics ◽  
X Ray
Sign in / Sign up

Export Citation Format

Share Document