Quasisteady state interpulse plasmas
Journal Article
·
· Journal of Applied Physics
- Department of Physics, Indian Institute of Technology, Kanpur 208016 (India)
The generation of quasisteady state plasmas in the power off phase, by short pulses [pulse duration ({tau}{sub p}){approx}0.5-1.2 {mu}s] of intense (60-100 kW) microwaves in the X band (9.45 GHz) is observed experimentally. The steady state is sustained from a few to tens of microseconds and depends upon the ionization processes in the interpulse phase and the characteristic diffusion length. The results are explained by a model, which considers the electron acceleration effects by the large amplitude of the field, the energy losses, and the characteristic electromagnetic field decay time. The effects of wave frequency, microwave power density, and particle diffusion on the steady state are investigated. A striking difference with conventional afterglows of pulsed discharges is pointed out.
- OSTI ID:
- 20979410
- Journal Information:
- Journal of Applied Physics, Journal Name: Journal of Applied Physics Journal Issue: 11 Vol. 101; ISSN JAPIAU; ISSN 0021-8979
- Country of Publication:
- United States
- Language:
- English
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