Production and loss of H atoms in a microwave discharge in
| Autor: | B. W. James, M.J. Wouters, Joe Khachan, Ian Falconer |
|---|---|
| Rok vydání: | 1998 |
| Předmět: |
Acoustics and Ultrasonics
Chemistry Condensed Matter Physics Fluorescence Dissociation (chemistry) Surfaces Coatings and Films Electronic Optical and Magnetic Materials Afterglow LIF Measurement Pressure range Torr Physics::Atomic and Molecular Clusters Physics::Atomic Physics Atomic physics Recombination Microwave |
| Zdroj: | Journal of Physics D: Applied Physics. 31:2004-2012 |
| ISSN: | 1361-6463 0022-3727 |
| DOI: | 10.1088/0022-3727/31/16/010 |
| Popis: | Two-photon laser-induced fluorescence (LIF) is used to study the production and loss of H atoms in a pulsed microwave discharge in over the pressure range 1-50 Torr. Absolute measurements of the H atom density are made at the end of the pulse. These measurements were calibrated using a new technique based on the decay rate of the LIF signal. The temporal variation of emission during pulsing of the discharge is used to estimate the rate of dissociation of , which compares well with the predictions of a one-dimensional model for the electron energy distribution function. This measurement also gives the wall recombination probability for H atoms, which is compared with that obtained by LIF measurement of the decay of the H atom density in the pulse afterglow. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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