Ion—Molecule Interaction in the Cathode Region of a Glow Discharge
1965; American Institute of Physics; Volume: 43; Issue: 5 Linguagem: Inglês
10.1063/1.1697012
ISSN1520-9032
Autores Tópico(s)Plasma Applications and Diagnostics
ResumoStudies of the ions arriving at the cathode of a glow discharge in nitrogen have been made by the use of a quadrupole mass spectrometer. Detailed investigation of the dependence of the relative intensities of the two major ions N2+ and N+ on the discharge conditions indicates that the latter species mostly originate within the cathode dark space, probably through the reaction N2++N2→N++N+N2. Calculation of the reaction time, with due allowance for the resonance charge exchange of N2+ ions, permits the treatment of the data to yield a value of 7.4×10−11 cc/sec for the rate constant of this reaction, at ion energies above the minimum of 17.4 eV required for this process.
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