Dispersion free measurements in neutron interferometry.

Result code in 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>

Result on the web

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DOI - Digital Object Identifier

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Result language

angličtina

Original language name

Dispersion free measurements in neutron interferometry.

Original language description

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

Czech name

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Czech description

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Type

J_x - Unclassified - Peer-reviewed scientific article (Jimp, Jsc and Jost)

CEP classification

BG - Nuclear, atomic and molecular physics, accelerators

OECD FORD branch

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Project

Result was created during the realization of more than one project. More information in the Projects tab.

Continuities

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Publication year

2000

Confidentiality

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

Name of the periodical

Physica. B

ISSN

0921-4526

e-ISSN

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Volume of the periodical

283

Issue of the periodical within the volume

N/A

Country of publishing house

NL - THE KINGDOM OF THE NETHERLANDS

Number of pages

3

Pages from-to

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UT code for WoS article

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EID of the result in the Scopus database

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