Dynamic of ion density perturbations observed in a microwave-plasma interaction

Journal Article · Tue Nov 15 04:00:00 EST 2005 · Physics of Plasmas

DOI:https://doi.org/10.1063/1.2126815· OSTI ID:20782336

Kamal-Al-Hassan, Md; Ito, Hiroaki; Yugami, Noboru; Nishida, Yasushi ^[1]

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1. Department of Physics, Dhaka University of Engineering and Technology, Gazipur 1700 (Bangladesh)

The dynamical behavior of ion density perturbations propagated at low-frequency wave nature is experimentally observed in microwave-plasma interaction. An unmagnetized, inhomogeneous laboratory plasma irradiated by an obliquely incident microwave with maximum power P=10 kW and pulse width approximately ion plasma period ({tau}{sub pi}{approx_equal}2{pi}/{omega}{sub pi}) is studied. The p-polarized electric-field component of the interacted microwave of frequency {omega}{sub 0} leads to a nonlinear phenomenon driven by the ponderomotive force by the process of resonance absorption at the critical layer where {omega}{sub 0}={omega}{sub p} is satisfied. The nonlinear ion density perturbations are created from the resonant layer and propagated to an underdense plasma as an electrostatic wave nature.

• OSTI ID: 20782336
• Journal Information: Physics of Plasmas, Journal Name: Physics of Plasmas Journal Issue: 11 Vol. 12; ISSN PHPAEN; ISSN 1070-664X
• Country of Publication: United States
• Language: English

Related Subjects

70 PLASMA PHYSICS AND FUSION TECHNOLOGY
DISTURBANCES
ELECTRIC FIELDS
ION DENSITY
IONS
LAYERS
MICROWAVE RADIATION
NONLINEAR PROBLEMS
PLASMA
PLASMA DENSITY
PLASMA WAVES
PONDEROMOTIVE FORCE
PULSES
RESONANCE ABSORPTION