Title of article
Tests of a silicon wafer based neutron collimator
Author/Authors
Cussen، نويسنده , , L.D and Vale، نويسنده , , C.J and Anderson، نويسنده , , I.S and Hّghoj، نويسنده , , P، نويسنده ,
Pages
6
From page
392
To page
397
Abstract
A Soller slit neutron collimator has been prepared by stacking 160 μm thick single crystal silicon wafers coated on one surface with 4 μm of gadolinium metal. The collimator has an angular width of 20 min full width at half maximum and an effective length of 2.75 cm. The collimator has beam dimensions of 1 cm wide by 5.3 cm high. Tests at neutron wavelengths 7.5Å and 1.8Å showed a peak transmission of 88% within 2% of the optimum theoretical possibility. The background suppression in the wings is comparable with that of conventional neutron collimators.
Keywords
Collimators , instrumentation , neutron scattering
Journal title
Astroparticle Physics
Record number
2017489
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