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This article is cited in 7 scientific papers (total in 7 papers)
INSTRUMENTS AND METHODS OF INVESTIGATION
Surface-ionization field mass-spectrometry studies of nonequilibrium surface ionization
N. M. Blashenkov, G. Ya. Lavrent'ev A. F. Ioffe Physical-Technical Institute, Russian Academy of Sciences
Abstract:
The ionization of polyatomic molecules on tungsten and tungsten oxide surfaces is considered for quasiequilibrium or essentially nonequilibrium conditions (in the latter case, the term nonequilibrium surface ionization is used for adsorbate ionization). Heterogeneous reactions are supposed to proceed through monomolecular decay of polyatomic molecules or fragments of multimolecular complexes. The nonequilibrium nature of these reactions is established. The dependences of the current density of disordered ions on the surface temperature, electric field strength, and ionized particle energy distribution are obtained in analytical form. Heterogeneous dissociation energies, the ionization potentials of radicals, and the magnitude of reaction departure from equilibrium are determined from experimental data, as are energy exchange times between reaction products and surfaces, the number of molecules in molecular complexes, and the number of effective degrees of freedom in molecules and complexes. In collecting the data а new technique relying on surface-ionization field mass-spectrometry was applied.
Received: May 2, 2006 Revised: July 10, 2006
Citation:
N. M. Blashenkov, G. Ya. Lavrent'ev, “Surface-ionization field mass-spectrometry studies of nonequilibrium surface ionization”, UFN, 177:1 (2007), 59–85; Phys. Usp., 50:1 (2007), 53–78
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https://www.mathnet.ru/eng/ufn421 https://www.mathnet.ru/eng/ufn/v177/i1/p59
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Abstract page: | 418 | Full-text PDF : | 96 | References: | 47 | First page: | 1 |
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