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The neutron small‐angle camera D11 at the high‐flux reactor, Grenoble
Author(s) -
Ibel K.
Publication year - 1976
Publication title -
journal of applied crystallography
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.429
H-Index - 162
ISSN - 1600-5767
DOI - 10.1107/s0021889876011394
Subject(s) - collimator , neutron , physics , neutron flux , optics , neutron scattering , small angle neutron scattering , detector , position (finance) , neutron detection , scattering , small angle scattering , flux (metallurgy) , nuclear physics , materials science , finance , economics , metallurgy
The neutron small‐angle scattering system at the high‐flux reactor in Grenoble consists of three major parts: the supply of cold neutrons via bent neutron guides; the small‐angle camera D11; and the data handling facilities. The camera D11 has an overall length of 80 m. The effective length of the camera is variable. The full length of the collimator before the fixed sample position can be reduced by movable neutron guides; the secondary flight path of 40 m full length contains detector sites in various positions. Thus, a large range of momentum transfers can be used with the same relative resolution. Scattering angles between 5 × 10 −4 and 0.5 rad and neutron wavelengths from 0.2 to 2.0 nm are available. A large‐area position‐sensitive detector is used which allows simultaneous recording of intensities scattered at different angles; it is a multiwire proportional chamber. 3808 elements of 1 cm 2 are arranged in a two‐dimensional matrix.