Dispersive sandwich-type monochromators based on bent perfect crystals (BPCs) for high-resolution neutron scattering experiments

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61389005%3A_____%2F25%3A00647385" target="_blank" >RIV/61389005:_____/25:00647385 - isvavai.cz</a>

Výsledek na webu

<a href="https://journals.sagepub.com/doi/10.1177/10238166251352754" target="_blank" >https://journals.sagepub.com/doi/10.1177/10238166251352754</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1177/10238166251352754" target="_blank" >10.1177/10238166251352754</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Dispersive sandwich-type monochromators based on bent perfect crystals (BPCs) for high-resolution neutron scattering experiments

Popis výsledku v původním jazyce

Dispersive double reflections realized by means of two bent perfect crystal (BPC) slabs of different cuts used as a sandwich can provide a monochromatic beam of excellent resolution parameters. The dispersive sandwich monochromator/analyzer provides the freedom to combine crystal slabs of different cuts, that is, different crystal reflections for the double diffraction process. For some combination of the individual crystal slab, it is possible to achieve the back-scattering resolution for a rather low monochromator take-off angle. Therefore, by using a suitable combination of two slabs, one can practically obtain a monochromatic neutron beam of any wavelength in the thermal region. Depending on the bending radius of the sandwich the resolution Δλ/λ and the Δα collimation can be continuously adjusted in the range of 5 × 10−5–1 × 10−3. Such dispersive BPC elements can also be used for the high-resolution analysis of the scattered beam, as well as for the high-precision λ-calibration of the time-of-flight neutron scattering devices. Another advantage of this dispersive monochromator realization is saving one axis of the neutron scattering instrument.

Název v anglickém jazyce

Dispersive sandwich-type monochromators based on bent perfect crystals (BPCs) for high-resolution neutron scattering experiments

Popis výsledku anglicky

Dispersive double reflections realized by means of two bent perfect crystal (BPC) slabs of different cuts used as a sandwich can provide a monochromatic beam of excellent resolution parameters. The dispersive sandwich monochromator/analyzer provides the freedom to combine crystal slabs of different cuts, that is, different crystal reflections for the double diffraction process. For some combination of the individual crystal slab, it is possible to achieve the back-scattering resolution for a rather low monochromator take-off angle. Therefore, by using a suitable combination of two slabs, one can practically obtain a monochromatic neutron beam of any wavelength in the thermal region. Depending on the bending radius of the sandwich the resolution Δλ/λ and the Δα collimation can be continuously adjusted in the range of 5 × 10−5–1 × 10−3. Such dispersive BPC elements can also be used for the high-resolution analysis of the scattered beam, as well as for the high-precision λ-calibration of the time-of-flight neutron scattering devices. Another advantage of this dispersive monochromator realization is saving one axis of the neutron scattering instrument.

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

2025

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

1477-2655

Svazek periodika

27

Číslo periodika v rámci svazku

1-2

Stát vydavatele periodika

NL - Nizozemsko

Počet stran výsledku

8

Strana od-do

3-10

Kód UT WoS článku

001524602700001

EID výsledku v databázi Scopus

2-s2.0-10503683651