The scattering of mesotrons in metal plates

摘要: Measurements by Blackett and Wilson (1938) showed that the scattering of cosmic-ray particles in metal plates was approximate agreement with simple theory then available, at least for energies less than 2 x 109 e-volts. This result provided important evidence as to nature particles, it tended confirm view penetrating were much heavier electrons, rather alternative assumption electrons which radiative energy losses suppressed high energies. Recently, Williams (1939) has given a critical development very energetic atomic field. treatment leads more accurate value theoretical Coulomb shows that, experiments, fairly sharp separation angular range is be expected between field atom arising from short-range interaction incident particle separate nuclear particles. Accurate measurements therefore offer method estimating magnitude mesotrons neutrons or protons. Williams, example, our previous indicate mesotron-proton (neutron) decidedly slow