Dispersion free measurements in neutron interferometry.

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61389005%3A_____%2F00%3A49000322" target="_blank" >RIV/61389005:_____/00:49000322 - 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

Dispersion free measurements in neutron interferometry.

Popis výsledku v původním jazyce

Neutron interferometry is a method of high-accuracy determination of neutron scattering length b.sup.c. The phase shift acquired by a neutron wave that propagates through a sample inserted in one of the beams of an interferometer isproportional to the neutron wavelength. A knowledge of it precisely defines the accuracy of the determination of b.sup.c. As a solution of this problem, the non-dispersive sample geometry was proposed. In this case the phase shift is .lambda.-independent but the very preciseorientation ofthe sample relative to the crystal planes of the interferometer is required. To overcome this obstacle a new nondispersive phase difference method was developed which achieves an accuracy in the determination of b.sup.c of even better than10.sub.-4, i.e. at the level of 10.sub.-5. This method was used for the high-accuracy measurement of the coherent scattering length of Si. Experiments carried out in HMI Berlin and NIST Gaithersburg and NPI Rez on different interferometri

Název v anglickém jazyce

Dispersion free measurements in neutron interferometry.

Popis výsledku anglicky

Neutron interferometry is a method of high-accuracy determination of neutron scattering length b.sup.c. The phase shift acquired by a neutron wave that propagates through a sample inserted in one of the beams of an interferometer isproportional to the neutron wavelength. A knowledge of it precisely defines the accuracy of the determination of b.sup.c. As a solution of this problem, the non-dispersive sample geometry was proposed. In this case the phase shift is .lambda.-independent but the very preciseorientation ofthe sample relative to the crystal planes of the interferometer is required. To overcome this obstacle a new nondispersive phase difference method was developed which achieves an accuracy in the determination of b.sup.c of even better than10.sub.-4, i.e. at the level of 10.sub.-5. This method was used for the high-accuracy measurement of the coherent scattering length of Si. Experiments carried out in HMI Berlin and NIST Gaithersburg and NPI Rez on different interferometri

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)

Rok uplatnění

2000

Kód důvěrnosti údajů

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

Název periodika

Physica. B

ISSN

0921-4526

e-ISSN

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Svazek periodika

283

Číslo periodika v rámci svazku

N/A

Stát vydavatele periodika

NL - Nizozemsko

Počet stran výsledku

3

Strana od-do

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Kód UT WoS článku

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EID výsledku v databázi Scopus

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