Modular arrays of boron tubes are used to gain spectral information about neutrons for mobile environmental research [4]. 3Hecubed cap H e gas-filled detectors?
The inner wall of the tube is coated with a solid layer of boron-10 . These are often used as an alternative to Helium-3 ( 3Hecubed cap H e BF3cap B cap F sub 3
gas, which acts as both the neutron-capturing medium and the proportional counting gas [7, 9].
