scholarly journals A quantitative study of diffracted X-ray intensities from natural diamond crystals by using multicrystal X-ray diffractometers and comparison with silicon crystals

1987 ◽  
Vol 43 (a1) ◽  
pp. C212-C212
Author(s):  
K. Lal ◽  
S. Niranjana ◽  
N. Goswami ◽  
V. Kumar ◽  
S. K. Halder ◽  
...  
Keyword(s):  
Quantitative Study ◽  
Natural Diamond ◽  
X Ray ◽  
Silicon Crystals ◽  
Diamond Crystals

A quantitative study of diffracted X-ray intensities from type I natural diamond crystals by high resolution X-ray diffractometry and comparison with nearly perfect silicon single crystals

Pramana ◽  
1990 ◽  
Vol 34 (6) ◽  
pp. 507-523 ◽  
Author(s):  
Krishan Lal ◽  
S Niranjana ◽  
N Goswami ◽  
Ajit Ram Verma
Keyword(s):  
High Resolution ◽  
Single Crystals ◽  
Quantitative Study ◽  
Natural Diamond ◽  
Type I ◽  
X Ray ◽  
Diamond Crystals

scholarly journals Direct observation of diffracted X-ray beam in the forward direction from thin and imperfect natural diamond crystals

1993 ◽  
Vol 49 (s1) ◽  
pp. c385-c386
Author(s):  
K. Lal ◽  
S. Niranjana ◽  
N. Goswami ◽  
A. R. Verma
Keyword(s):  
Direct Observation ◽  
Natural Diamond ◽  
Forward Direction ◽  
X Ray ◽  
Diamond Crystals

Anomalously high diffracted x-ray intensities from type II natural diamond crystals in comparison to those from type I crystals

1990 ◽  
Vol 75 (11) ◽  
pp. 881-883 ◽  
Author(s):  
Krishan Lal ◽  
S. Niranjana ◽  
N. Goswami ◽  
Ajit Ram Verma
Keyword(s):  
Natural Diamond ◽  
Type I ◽  
Type Ii ◽  
X Ray ◽  
Diamond Crystals

scholarly journals Small Bragg-plane slope errors revealed in synthetic diamond crystals

2020 ◽  
Vol 27 (6) ◽  
pp. 1553-1563
Author(s):  
Paresh Pradhan ◽  
Michael Wojcik ◽  
Xianrong Huang ◽  
Elina Kasman ◽  
Lahsen Assoufid ◽  
...  
Keyword(s):  
High Temperature ◽  
Diamond Crystal ◽  
Synthetic Diamond ◽  
Bragg Diffraction ◽  
High Temperature Annealing ◽  
Rocking Curve ◽  
X Ray ◽  
Silicon Crystals ◽  
Crystal Imperfections ◽  
Diamond Crystals

Wavefront-preserving X-ray diamond crystal optics are essential for numerous applications in X-ray science. Perfect crystals with flat Bragg planes are a prerequisite for wavefront preservation in Bragg diffraction. However, this condition is difficult to realize in practice because of inevitable crystal imperfections. Here, X-ray rocking curve imaging is used to study the smallest achievable Bragg-plane slope errors in the best presently available synthetic diamond crystals and how they compare with those of perfect silicon crystals. It is shown that the smallest specific slope errors in the best diamond crystals are about 0.08 (3) µrad mm−2. These errors are only 50% larger than the 0.05 (2) µrad mm−2 specific slope errors measured in perfect silicon crystals. High-temperature annealing at 1450°C of almost flawless diamond crystals reduces the slope errors very close to those of silicon. Further investigations are in progress to establish the wavefront-preservation properties of these crystals.

Effect of pressure on synthetic diamond crystals at high temperatures and pressures in Fe/Ni catalyst system

CrystEngComm ◽  
2021 ◽  
Author(s):  
Shuai Fang ◽  
Yongkui Wang ◽  
Liangchao Chen ◽  
Zhiyun Lu ◽  
Zhenghao Cai ◽  
...  
Keyword(s):  
Nitrogen Content ◽  
Growth Mechanism ◽  
Synthetic Diamond ◽  
Natural Diamond ◽  
Catalyst System ◽  
Necessary Condition ◽  
Ni Catalyst ◽  
Effect Of Pressure ◽  
Diamond Crystals ◽  
System P

Pressure is a necessary condition for the growth of natural diamond. Studying the effect of pressure on the nitrogen content of diamond is important for exploring the growth mechanism of...

An X-ray topographic study of planar growth defects in a natural diamond

1965 ◽  
Vol 12 (115) ◽  
pp. 177-189 ◽  
Author(s):  
B. Lawn ◽  
Y. Kamiya ◽  
A. R. Lang
Keyword(s):  
Natural Diamond ◽  
X Ray ◽  
Growth Defects ◽  
Planar Growth

Quantitative study of spurious X-ray production in thin film microanalysis

1989 ◽  
Vol 154 (1) ◽  
pp. 19-29 ◽  
Author(s):  
Frank Glas
Keyword(s):  
Thin Film ◽  
Quantitative Study ◽  
X Ray
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