A novel pyrolytic-graphite-on-silicon device for neutron monochromatization

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61389005%3A_____%2F23%3A00572670" target="_blank" >RIV/61389005:_____/23:00572670 - isvavai.cz</a>

Výsledek na webu

<a href="https://doi.org/10.1016/j.nima.2023.168012" target="_blank" >https://doi.org/10.1016/j.nima.2023.168012</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1016/j.nima.2023.168012" target="_blank" >10.1016/j.nima.2023.168012</a>

Jazyk výsledku

angličtina

Název v původním jazyce

A novel pyrolytic-graphite-on-silicon device for neutron monochromatization

Popis výsledku v původním jazyce

In the quest of improving neutron scattering instrumentation a new style of dynamically focusing monochro-mator is proposed where highly oriented pyrolytic graphite (HOPG) crystals are bonded on bendable single crystal silicon blades. This development followed a study of the elastic limit of HOPG that revealed serious technical difficulties when bending thin blades of this very fragile material to achieve dynamical focusing. The critical breakage thickness was found to be less than 0.1 mm for a radius of curvature of 1.5 m. The novel PG-on-Si (POSI) concept replaces the linear arrays of individually oriented HOPG pieces employed in existing devices. It facilitates the integration of two separate HOPG and Si monochromators into a single device. Mechanical tests, X-ray and neutron diffraction studies of the POSI system confirmed the feasibility of these single and dual monochromator designs that feature high performance and augmented functionality at reduced complexity and cost.

Název v anglickém jazyce

A novel pyrolytic-graphite-on-silicon device for neutron monochromatization

Popis výsledku anglicky

In the quest of improving neutron scattering instrumentation a new style of dynamically focusing monochro-mator is proposed where highly oriented pyrolytic graphite (HOPG) crystals are bonded on bendable single crystal silicon blades. This development followed a study of the elastic limit of HOPG that revealed serious technical difficulties when bending thin blades of this very fragile material to achieve dynamical focusing. The critical breakage thickness was found to be less than 0.1 mm for a radius of curvature of 1.5 m. The novel PG-on-Si (POSI) concept replaces the linear arrays of individually oriented HOPG pieces employed in existing devices. It facilitates the integration of two separate HOPG and Si monochromators into a single device. Mechanical tests, X-ray and neutron diffraction studies of the POSI system confirmed the feasibility of these single and dual monochromator designs that feature high performance and augmented functionality at reduced complexity and cost.

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

<a href="/cs/project/LM2023057" target="_blank" >LM2023057: Evropský spalační zdroj – účast České republiky</a><br>

Návaznosti

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Rok uplatnění

2023

Kód důvěrnosti údajů

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

Název periodika

Nuclear Instruments & Methods in Physics Research Section A

ISSN

0168-9002

e-ISSN

1872-9576

Svazek periodika

1048

Číslo periodika v rámci svazku

MAR

Stát vydavatele periodika

NL - Nizozemsko

Počet stran výsledku

9

Strana od-do

168012

Kód UT WoS článku

000994456200001

EID výsledku v databázi Scopus

2-s2.0-85163188801