Properties of the dispersive double bent crystal monochromator setting with a multicrystal sandwich at the place of the second axis

Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61389005%3A_____%2F22%3A00556877" target="_blank" >RIV/61389005:_____/22:00556877 - isvavai.cz</a>
Result on the web
<a href="https://doi.org/10.3233/JNR-210032" target="_blank" >https://doi.org/10.3233/JNR-210032</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.3233/JNR-210032" target="_blank" >10.3233/JNR-210032</a>

Result language
angličtina
Original language name
Properties of the dispersive double bent crystal monochromator setting with a multicrystal sandwich at the place of the second axis
Original language description
In this paper, some luminosity, focusing and resolution properties of a double-crystal (n,-m) dispersive setting which contains a bent perfect Si(111) crystal as a first one and a sandwich consisting of four different bent perfect crystals (BPC) Si(220), Si(400), Ge(111) and Ge(311) located at the second axis, is introduced with the aim of possible use in high-resolution diffractometry. The properties were investigated at a neutron wavelength of 0.162 nm. It was shown that a narrow and highly collimated and high-resolution monochromatic beam can be obtained. By using a standard polycrystalline pin of alpha-Fe, the resolution of the three-axis diffraction performance, namely, in the vicinity of the scattering angle 20(S) = 90 degrees was tested in detail. It has been found that the dispersive double-crystal (DC) setting represents a high-resolution monochromator alternative, e.g. in powder diffraction which could be used at high-flux neutron sources.
Czech name
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Czech description
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Type
J<sub>imp</sub> - Article in a specialist periodical, which is included in the Web of Science database
CEP classification
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OECD FORD branch
20305 - Nuclear related engineering; (nuclear physics to be 1.3);

Project
Result was created during the realization of more than one project. More information in the Projects tab.
Continuities
I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Publication year
2022
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

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