X-ray dark-field refraction-contrast imaging of micro-objects.

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68081731%3A_____%2F02%3A12020128" target="_blank" >RIV/68081731:_____/02:12020128 - isvavai.cz</a>

Výsledek na webu

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DOI - Digital Object Identifier

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Jazyk výsledku

angličtina

Název v původním jazyce

X-ray dark-field refraction-contrast imaging of micro-objects.

Popis výsledku v původním jazyce

An X-ray multilayer mirror, consisting of two periodical reflecting structures separed by a quarter-wave spacer, can be designed to have a very sharp and deep resonant absorption at a definite angle of incidence. Such a mirror may be used as an angular dispersive element for refractive X-ray radiography. In this method, referred to as dark-field refraction-contrast imaging, the image contrast is obtained not due to variation of absorption but due to variation of the refractive index of the object's inner structure. Signal-to-noise ratio in the image can be significantly enhanced, and the dynamical range of the detector can be reduced due to suppression of the shot noise produced by the direct beam. Theoretical basis for this method is developed, providing definite rules for designing of the mirror with resonant absorption, and explaining the limitations on the required detector spatial resolution.

Název v anglickém jazyce

X-ray dark-field refraction-contrast imaging of micro-objects.

Popis výsledku anglicky

An X-ray multilayer mirror, consisting of two periodical reflecting structures separed by a quarter-wave spacer, can be designed to have a very sharp and deep resonant absorption at a definite angle of incidence. Such a mirror may be used as an angular dispersive element for refractive X-ray radiography. In this method, referred to as dark-field refraction-contrast imaging, the image contrast is obtained not due to variation of absorption but due to variation of the refractive index of the object's inner structure. Signal-to-noise ratio in the image can be significantly enhanced, and the dynamical range of the detector can be reduced due to suppression of the shot noise produced by the direct beam. Theoretical basis for this method is developed, providing definite rules for designing of the mirror with resonant absorption, and explaining the limitations on the required detector spatial resolution.

Druh

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

CEP obor

JI - Kompositní materiály

OECD FORD obor

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Projekt

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Návaznosti

Z - Vyzkumny zamer (s odkazem do CEZ)

Rok uplatnění

2002

Kód důvěrnosti údajů

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

Název periodika

Optics communications

ISSN

0030-4018

e-ISSN

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Svazek periodika

213

Číslo periodika v rámci svazku

4/6

Stát vydavatele periodika

NL - Nizozemsko

Počet stran výsledku

13

Strana od-do

267-279

Kód UT WoS článku

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EID výsledku v databázi Scopus

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