Detector to trace neutronUncharged elementary particle with a mass of 1.67492716 ยท10... radiationEnergy dispersion through matter or space. In atomic physics... above a certain energyAbility to do work or diffuse heat. The unit of energy is th... value (threshold energyAbility to do work or diffuse heat. The unit of energy is th...). Sulphide for example is a threshold detector. Only neutrons with an energyAbility to do work or diffuse heat. The unit of energy is th... > 2 MeVMegaelectron volt, 1,000,000 eV. are measured via the reaction S-32 (n, p)P-32.