Dissociative ionization of O2 and N2 by electron impact — N+ and O+ kinetic energies and angular distributions |
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Authors: | JAD Stockdale Liliana Deleanu |
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Institution: | Health Physics Division, Oak Ridge National Laboratory, Oak Ridge, Tennessee 37830, USA |
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Abstract: | An apparatus containing cross molecular and pulsed electron beams has been used to obtain distributions in kinetic energy and angle of fast (? 0.5 eV) positive ions produced through dissociative ionization of N2 and O2 by impact of 50 to 2000 eV electrons. Four main O+ ion groups are observed with peak energies of 0.8, 2.0, 3.0, and 5.0 eV. Two main N+ groups peaking at 2.0 and 3.0 eV are seen. Angular distributions of both N+ and O+ ions are essentially isotropic for electron-beam-ion detection angles from 30° to 110°. |
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