A. Grallert et al., IMPROVED GAS-CELL D-D NEUTRON SOURCES, Nuclear instruments & methods in physics research. Section A, Accelerators, spectrometers, detectors and associated equipment, 337(2-3), 1994, pp. 615-618
The signal-to-background ratio is enhanced by a factor of about 20 for
gas-cell D-D neutron sources using tungsten as a collimator material
instead of brass. Methods for the determination of the effective sourc
e centre are described.