Monte Carlo simulations of parasitic and multiple reflections in elastically bent perfect single-crystals

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F26722445%3A_____%2F11%3A%230000581" target="_blank" >RIV/26722445:_____/11:#0000581 - isvavai.cz</a>

Nalezeny alternativní kódy

RIV/61389005:_____/11:00365870

Výsledek na webu

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DOI - Digital Object Identifier

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Jazyk výsledku

angličtina

Název v původním jazyce

Monte Carlo simulations of parasitic and multiple reflections in elastically bent perfect single-crystals

Popis výsledku v původním jazyce

A new model including reflections on multiple diffracting planes has been developed and implemented within the neutron Monte Carlo ray-tracing code of the RESTRAX simulation package to describe the diffraction and transmission properties of elastically bent perfect crystals. The new code provides a quantitative prediction of the intensity of parasitic reflections and of the Renninger effect, both of which can significantly modify the intensity of primary reflections and increase the attenuation of a neutron beam traversing a bent perfect crystal. Experimentally observed multiple reflection (MR) effects have been compared with simulated data, the results prove that the new code can predict neutron transport in bent perfect crystals more realistically. The MR effects can be considered in the design of neutron monochromators and analysers, which is of particular importance for complex multianalyser systems, where the neutron beam may have to pass through a thick layer of silicon crystal b

Název v anglickém jazyce

Monte Carlo simulations of parasitic and multiple reflections in elastically bent perfect single-crystals

Popis výsledku anglicky

A new model including reflections on multiple diffracting planes has been developed and implemented within the neutron Monte Carlo ray-tracing code of the RESTRAX simulation package to describe the diffraction and transmission properties of elastically bent perfect crystals. The new code provides a quantitative prediction of the intensity of parasitic reflections and of the Renninger effect, both of which can significantly modify the intensity of primary reflections and increase the attenuation of a neutron beam traversing a bent perfect crystal. Experimentally observed multiple reflection (MR) effects have been compared with simulated data, the results prove that the new code can predict neutron transport in bent perfect crystals more realistically. The MR effects can be considered in the design of neutron monochromators and analysers, which is of particular importance for complex multianalyser systems, where the neutron beam may have to pass through a thick layer of silicon crystal b

Druh

J_x - Nezařazeno - Článek v odborném periodiku (Jimp, Jsc a Jost)

CEP obor

BG - Jaderná, atomová a molekulová fyzika, urychlovače

OECD FORD obor

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Projekt

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

Návaznosti

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)<br>Z - Vyzkumny zamer (s odkazem do CEZ)

Rok uplatnění

2011

Kód důvěrnosti údajů

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

Název periodika

Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment

ISSN

0168-9002

e-ISSN

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Svazek periodika

634

Číslo periodika v rámci svazku

1

Stát vydavatele periodika

NL - Nizozemsko

Počet stran výsledku

5

Strana od-do

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Kód UT WoS článku

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EID výsledku v databázi Scopus

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