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Measurement of ParallelDiffusion Coefficient
Analysis of Results
3 other sections not shown
actual collision frequency analytic expression anode current average energy loss Blevin and Haydon Boltzmann equation cathode coaxial comparison configuration space constant collision frequency corresponding Crompton and Sutton current ratio cyclotron frequency diffusion coefficient distribution function distribution is Maxwellian drift-velocity ratio Druyvestyn E/p and B/p effective collision frequency elastic collision frequency Elastic cross section electric field electrometers electron energy electron velocity energy distribution energy of electrons error function experiment filament Frost and Phelps function of E/B gap spacing helium hydrogen and deuterium impurities inelastic Lawrence Radiation Laboratory low-energy region Maxwell distribution Maxwellian distribution measured values method middle ring negative ions number of electrons obtained perpendicular diffusion perpendicular drift velocity pressure range sec-mm Hg secondary emission Section IV-A shown in Fig strong magnetic field theoretical expression transverse diffusion transverse drift velocity vacuum chamber values of a/p vibrational cross section vibrational excitation voltage zero magnetic field