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Title: Quasisteady state interpulse plasmas

Abstract

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.

Authors:
; ; ;  [1];  [2];  [3]
  1. Department of Physics, Indian Institute of Technology, Kanpur 208016 (India)
  2. (India)
  3. (Japan)
Publication Date:
OSTI Identifier:
20979410
Resource Type:
Journal Article
Resource Relation:
Journal Name: Journal of Applied Physics; Journal Volume: 101; Journal Issue: 11; Other Information: DOI: 10.1063/1.2743825; (c) 2007 American Institute of Physics; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
71 CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS; ACCELERATION; AFTERGLOW; DIFFUSION; DIFFUSION LENGTH; ELECTROMAGNETIC FIELDS; ELECTRONS; GHZ RANGE 01-100; HIGH-FREQUENCY DISCHARGES; IONIZATION; MICROWAVE RADIATION; PARTICLES; PLASMA; POWER DENSITY; PULSES; STEADY-STATE CONDITIONS

Citation Formats

Bhattacharjee, Sudeep, Dey, Indranuj, Sen, Abhijit, Amemiya, Hiroshi, Institute for Plasma Research, Bhat, Gandhinagar 382 428, and Graduate School of Chuo University, Bunkyo, Tokyo 112-8551. Quasisteady state interpulse plasmas. United States: N. p., 2007. Web. doi:10.1063/1.2743825.
Bhattacharjee, Sudeep, Dey, Indranuj, Sen, Abhijit, Amemiya, Hiroshi, Institute for Plasma Research, Bhat, Gandhinagar 382 428, & Graduate School of Chuo University, Bunkyo, Tokyo 112-8551. Quasisteady state interpulse plasmas. United States. doi:10.1063/1.2743825.
Bhattacharjee, Sudeep, Dey, Indranuj, Sen, Abhijit, Amemiya, Hiroshi, Institute for Plasma Research, Bhat, Gandhinagar 382 428, and Graduate School of Chuo University, Bunkyo, Tokyo 112-8551. Fri . "Quasisteady state interpulse plasmas". United States. doi:10.1063/1.2743825.
@article{osti_20979410,
title = {Quasisteady state interpulse plasmas},
author = {Bhattacharjee, Sudeep and Dey, Indranuj and Sen, Abhijit and Amemiya, Hiroshi and Institute for Plasma Research, Bhat, Gandhinagar 382 428 and Graduate School of Chuo University, Bunkyo, Tokyo 112-8551},
abstractNote = {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.},
doi = {10.1063/1.2743825},
journal = {Journal of Applied Physics},
number = 11,
volume = 101,
place = {United States},
year = {Fri Jun 01 00:00:00 EDT 2007},
month = {Fri Jun 01 00:00:00 EDT 2007}
}