Author/Authors :
Vasilev، نويسنده , , N.D. and Charlton، نويسنده , , T.R. and Kirichek، نويسنده , , O. and Kinane، نويسنده , , C.J. and Schooneveld، نويسنده , , E.M. and Langridge، نويسنده , , S. and Kockelmann، نويسنده , , W.A. and McClintock، نويسنده , , P.V.E.، نويسنده ,
Abstract :
The prototype of a wavelength-sensitive neutron filter has been realized and tested successfully for the first time. The filter exploits the neutron wavelength dependence of the transparency of 3He gas. The analysis of test results gives high wavelength resolution Δ λ / λ ≃ 0.5 % over the broad wavelength range 0.2–5.2 Å. We propose an idea to expand the filter range in the short wavelength direction by use of a cryogenic environment, and also consider the use of media using other than 3He gas. The proposed filter might be used in advanced reflectometers and SANS2D neutron scattering instruments.
