X-ray collimation by crystals with precise parabolic holes based on diffractive-refractive optics

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216224%3A14310%2F11%3A00054739" target="_blank" >RIV/00216224:14310/11:00054739 - isvavai.cz</a>

Nalezeny alternativní kódy

RIV/68378271:_____/11:00361394

Výsledek na webu

<a href="http://scripts.iucr.org/cgi-bin/paper?S0909049511009083" target="_blank" >http://scripts.iucr.org/cgi-bin/paper?S0909049511009083</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1107/S0909049511009083" target="_blank" >10.1107/S0909049511009083</a>

Jazyk výsledku

angličtina

Název v původním jazyce

X-ray collimation by crystals with precise parabolic holes based on diffractive-refractive optics

Popis výsledku v původním jazyce

Two crystals with precise parabolic holes were used to demonstrate sagittal beam collimation by means of a diffractive-refractive double-crystal monochromator. A new approach is introduced and beam collimation is demonstrated. Two Si(333) crystals with an asymmetry angle of [alpha] = 15 deg were prepared and arranged in a dispersive position (+,-,-,+). Based on theoretical calculations, this double-crystal set-up should provide tunable beam collimation within an energy range of 6.3-18.8 keV ([Theta]B =71-18.4 deg). An experiment study was performed on BM05 at ESRF. Using 8.97 keV energy, the beam profile at various distances was measured. The experimental results are in good agreement with theoretical predictions. Owing to insufficient harmonic suppression, the collimated (333) beam was overlapped by horizontally diverging (444) and (555) beams.

Název v anglickém jazyce

X-ray collimation by crystals with precise parabolic holes based on diffractive-refractive optics

Popis výsledku anglicky

Two crystals with precise parabolic holes were used to demonstrate sagittal beam collimation by means of a diffractive-refractive double-crystal monochromator. A new approach is introduced and beam collimation is demonstrated. Two Si(333) crystals with an asymmetry angle of [alpha] = 15 deg were prepared and arranged in a dispersive position (+,-,-,+). Based on theoretical calculations, this double-crystal set-up should provide tunable beam collimation within an energy range of 6.3-18.8 keV ([Theta]B =71-18.4 deg). An experiment study was performed on BM05 at ESRF. Using 8.97 keV energy, the beam profile at various distances was measured. The experimental results are in good agreement with theoretical predictions. Owing to insufficient harmonic suppression, the collimated (333) beam was overlapped by horizontally diverging (444) and (555) beams.

Druh

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

CEP obor

BM - Fyzika pevných látek a magnetismus

OECD FORD obor

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Projekt

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

Návaznosti

Z - Vyzkumny zamer (s odkazem do CEZ)<br>S - Specificky vyzkum na vysokych skolach<br>I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Rok uplatnění

2011

Kód důvěrnosti údajů

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

Název periodika

Journal of Synchrotron Radiation

ISSN

0909-0495

e-ISSN

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Svazek periodika

18

Číslo periodika v rámci svazku

1

Stát vydavatele periodika

US - Spojené státy americké

Počet stran výsledku

5

Strana od-do

522-526

Kód UT WoS článku

000291401900026

EID výsledku v databázi Scopus

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