On possible exploitation of fully asymmetric diffraction geometry of bent perfect crystals for neutron monochromators in diffraction instruments

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61389005%3A_____%2F20%3A00523918" target="_blank" >RIV/61389005:_____/20:00523918 - isvavai.cz</a>

Výsledek na webu

<a href="https://doi.org/10.3233/JNR-190122" target="_blank" >https://doi.org/10.3233/JNR-190122</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.3233/JNR-190122" target="_blank" >10.3233/JNR-190122</a>

Jazyk výsledku

angličtina

Název v původním jazyce

On possible exploitation of fully asymmetric diffraction geometry of bent perfect crystals for neutron monochromators in diffraction instruments

Popis výsledku v původním jazyce

This paper summarizes recent results of an exhaustive experimental study on possible uses of bent perfect crystal (BPC) slabs of Si employed in the fully asymmetric diffraction (FAD) geometry. In all cases the FAD-BPC slab is employed as the second crystal of the dispersive double-crystal setting in combination with another BPC slab. The FAD geometry was tested in the output beam expansion (OBE) as well as in the output beam compression (OBC) diffraction orientations. A comparison of dispersive parallel (+n,-m) and antiparallel (+n,+m) settings was carried out with the FAD-BPC slab in the OBE orientation. High-resolution properties of the dispersive double-crystal settings are demonstrated by several experimental results, e.g. edge refraction or powder diffraction. Due to the given experimental conditions, for FAD geometry studies, we used Si(311) crystal planes having 29.5 degrees with respect to the main surface of the crystal slab.

Název v anglickém jazyce

On possible exploitation of fully asymmetric diffraction geometry of bent perfect crystals for neutron monochromators in diffraction instruments

Popis výsledku anglicky

This paper summarizes recent results of an exhaustive experimental study on possible uses of bent perfect crystal (BPC) slabs of Si employed in the fully asymmetric diffraction (FAD) geometry. In all cases the FAD-BPC slab is employed as the second crystal of the dispersive double-crystal setting in combination with another BPC slab. The FAD geometry was tested in the output beam expansion (OBE) as well as in the output beam compression (OBC) diffraction orientations. A comparison of dispersive parallel (+n,-m) and antiparallel (+n,+m) settings was carried out with the FAD-BPC slab in the OBE orientation. High-resolution properties of the dispersive double-crystal settings are demonstrated by several experimental results, e.g. edge refraction or powder diffraction. Due to the given experimental conditions, for FAD geometry studies, we used Si(311) crystal planes having 29.5 degrees with respect to the main surface of the crystal slab.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

10302 - Condensed matter physics (including formerly solid state physics, supercond.)

Projekt

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

Návaznosti

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Rok uplatnění

2020

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

22

Číslo periodika v rámci svazku

1

Stát vydavatele periodika

AN - Nizozemské Antily

Počet stran výsledku

13

Strana od-do

17-29

Kód UT WoS článku

000523593300002

EID výsledku v databázi Scopus

2-s2.0-85083336565