I. I. Ziganshin, K. R. Galiullin, D. V. Lopaev, E. A. Kirillov, A. T. Rakhimov
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引用次数: 0
Abstract
The probability of heterogeneous recombination of hydrogen atoms, γH, on the surface of a Pyrex tube in a direct current glow discharge in pure hydrogen at medium pressure (2–7 Torr) has been measured as a function of the discharge pressure and current for two wall temperatures. It has been found that the recombination probability does not depend on the discharge pressure and current under the condition of preliminary training of the tube in a hydrogen discharge. The γH value decreases during the tube training with a characteristic time of reaching a steady-state value of ~30 min. Analysis of a possible recombination mechanism using quantum chemical methods shows that the recombination of hydrogen atoms on the Pyrex surface is associated with OH radicals and oxygen vacancies on the surface, and the dynamics of γH can be explained by the decay of surface OH radicals during tube training.
期刊介绍：
Plasma Physics Reports is a peer reviewed journal devoted to plasma physics. The journal covers the following topics: high-temperature plasma physics related to the problem of controlled nuclear fusion based on magnetic and inertial confinement; physics of cosmic plasma, including magnetosphere plasma, sun and stellar plasma, etc.; gas discharge plasma and plasma generated by laser and particle beams. The journal also publishes papers on such related topics as plasma electronics, generation of radiation in plasma, and plasma diagnostics. As well as other original communications, the journal publishes topical reviews and conference proceedings.
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