Energy removed by delta rays from finite volumes in passage of charged particles

摘要: Abstract In the passage of a charged particle through matter, energy lost by particle, in general, will not be same as retained material. Calculations differences caused escaping electrons (delta rays) are presented for two experimental situations, but methods used can generally applied. E.g. 50 MeV protons carbon foil 1 mg/cm 2 thick would lose 11 keV. 10% this loss escape from form kinetic delta rays. An ray appear only about 25 protons. rough approximation, light elements, on average, an amounting to eV per initial proton is removed