Potential use of V-channel Ge(220) monochromators in X-ray metrology and imaging
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216224%3A14740%2F13%3A00069091" target="_blank" >RIV/00216224:14740/13:00069091 - isvavai.cz</a>
Result on the web
<a href="http://dx.doi.org/10.1107/S0021889813006122" target="_blank" >http://dx.doi.org/10.1107/S0021889813006122</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1107/S0021889813006122" target="_blank" >10.1107/S0021889813006122</a>
Alternative languages
Result language
angličtina
Original language name
Potential use of V-channel Ge(220) monochromators in X-ray metrology and imaging
Original language description
While channel-cut crystals, in which the diffracting surfaces in an asymmetric cut are kept parallel, can provide beam collimation and spectral beam shaping, they can in addition provide beam compression or expansion if the cut is V-shaped. The compression/expansion ratio depends in this case on the total asymmetry factor. If the Ge(220) diffraction planes and a total asymmetry factor in excess of 10 are used, the rocking curves of two diffractors will have a sufficient overlap only if the second diffractor is tuned slightly with respect to the first one. This study compares and analyses several ways of overcoming this mismatch, which is due to refraction, when the Cu K1 beam is compressed 21-fold in a V21 monochromator. A more than sixfold intensity increase was obtained if the matching was improved either by a compositional variation or by a thermal deformation. This provided an intensity gain compared with the use of a simple slit in a symmetrical channel-cut monochromator.
Czech name
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Czech description
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Classification
Type
J<sub>x</sub> - Unclassified - Peer-reviewed scientific article (Jimp, Jsc and Jost)
CEP classification
BM - Solid-state physics and magnetism
OECD FORD branch
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Result continuities
Project
<a href="/en/project/ED1.1.00%2F02.0068" target="_blank" >ED1.1.00/02.0068: Central european institute of technology</a><br>
Continuities
P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)
Others
Publication year
2013
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data specific for result type
Name of the periodical
Journal of Applied Crystallography
ISSN
0021-8898
e-ISSN
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Volume of the periodical
46
Issue of the periodical within the volume
4
Country of publishing house
US - UNITED STATES
Number of pages
8
Pages from-to
945-952
UT code for WoS article
000322032300019
EID of the result in the Scopus database
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