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

Kód výsledku v 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>

Výsledek na webu

<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>

Jazyk výsledku

angličtina

Název v původním jazyce

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

Popis výsledku v původním jazyce

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.

Název v anglickém jazyce

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

Popis výsledku anglicky

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.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

20305 - Nuclear related engineering; (nuclear physics to be 1.3);

Projekt

Výsledek vznikl pri realizaci vícero projektů. Více informací v záložce Projekty.

Návaznosti

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Rok uplatnění

2022

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název periodika

Journal of Neutron Reasearch

ISSN

1023-8166

e-ISSN

—

Svazek periodika

24

Číslo periodika v rámci svazku

1

Stát vydavatele periodika

NL - Nizozemsko

Počet stran výsledku

14

Strana od-do

1-14

Kód UT WoS článku

000775514100001

EID výsledku v databázi Scopus

2-s2.0-85127829456