B G O'Hare et al 1975 J. Phys. B: At. Mol. Phys. 8 2968 doi:10.1088/0022-3700/8/18/015
B G O'Hare, R W McCullough and H B Gilbody
Show affiliationsA modulated crossed-beam technique has been used to study the ionization of potassium and sodium vapour by 20-100 keV H+ and He+ ions. Absolute cross sections sigma e for electron production have been determined from the gross yield of electrons. Mass spectrometric measurements of the relative abundance of secondary ion species, together with measurements (in a subsidiary experiment) of the total one-electron capture cross section sigma 10 have been used to determine cross sections for Na+, K+, and K2+ formation. Proton impact ionization cross sections are shown to be in generally poor accord with theoretical estimates based on both the classical impulse and Born approximations.
Issue 18 (21 December 1975)
B G O'Hare et al 1975 J. Phys. B: At. Mol. Phys. 8 2968
A L Cavalcanti de Oliveira and E R Bezerra de Mello 2004 Class. Quantum Grav. 21 1685
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