Effect of argon addition on plasma parameters and dust charging in hydrogen plasma

Experimental results on effect of adding argon gas to hydrogen plasma in a multi-cusp dusty plasma device are reported. Addition of argon modifies plasma density, electron temperature, degree of hydrogen dissociation, dust current as well as dust charge. From the dust charging profile, it is observe...

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Bibliographic Details
Published in:Journal of applied physics 2014-10, Vol.116 (16)
Main Authors: Kakati, B., Kausik, S. S., Bandyopadhyay, M., Saikia, B. K., Saxena, Y. C.
Format: Article
Language:English
Subjects:
70 PLASMA PHYSICS AND FUSION TECHNOLOGY
Applied physics
Argon
ARGON IONS
Charging
CURRENTS
CUSPED GEOMETRIES
DISSOCIATION
Dust
Dust control
Dusty plasmas
Electron energy
ELECTRON TEMPERATURE
FLOW RATE
Flow velocity
Hydrogen
HYDROGEN IONS
Hydrogen plasma
Hydrogen storage
Low pressure
Plasma
PLASMA DENSITY
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Summary:Experimental results on effect of adding argon gas to hydrogen plasma in a multi-cusp dusty plasma device are reported. Addition of argon modifies plasma density, electron temperature, degree of hydrogen dissociation, dust current as well as dust charge. From the dust charging profile, it is observed that the dust current and dust charge decrease significantly up to 40% addition of argon flow rate in hydrogen plasma. But beyond 40% of argon flow rate, the changes in dust current and dust charge are insignificant. Results show that the addition of argon to hydrogen plasma in a dusty plasma device can be used as a tool to control the dust charging in a low pressure dusty plasma.
ISSN:0021-8979
1089-7550
DOI:10.1063/1.4898858