title: The energy dependence of W in argon/methane gas for 300 keV to 1.8 Me V protons.
abstract: As part of a programme related to neutron dosimetry, the variation of the average energy per ion pair, W, has been determined for protons within the energy range 300 keV to 1.8 MeV stopped in 90% argon-10% methane gas. A gridded ion chamber was used with pulse height analysis to measure ion yield. An increase of W with decreasing energy was observed below about 1 MeV with a reversal at 450 keV.
mesh_terms: D001128:Argon; D004566:Electrodes; D008697:Methane; D010315:Particle Accelerators / Q000295:instrumentation*; D011522:Protons
chemical_list: D011522:Protons; D001128:Argon; D008697:Methane