Quasisteady state interpulse plasmas

Bhattacharjee, Sudeep ; Dey, Indranuj ; Sen, Abhijit ; Amemiya, Hiroshi (2007) Quasisteady state interpulse plasmas Journal of Applied Physics, 101 (11). 113311_1-113311_8. ISSN 0021-8979

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Related URL: http://dx.doi.org/10.1063/1.2743825


The generation of quasisteady state plasmas in the power off phase, by short pulses [pulse duration (Τp) - 0.5-1.2 µ 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.

Item Type:Article
Source:Copyright of this article belongs to American Institute of Physics.
Keywords:Plasma Sources; Ionisation; Plasma Transport Processes; Plasma Electromagnetic Wave Propagation; Afterglows; High-frequency Discharges
ID Code:85283
Deposited On:02 Mar 2012 07:18
Last Modified:02 Mar 2012 07:18

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