Structure of the magnetized sheath of a dusty plasma
Mehdipour, H., Denysenko, I., & Ostrikov, K. (2010) Structure of the magnetized sheath of a dusty plasma. Physics of Plasmas, 17(12), pp. 123708-1.
A three-component fluid model for a dusty plasma-sheath in an oblique magnetic field is presented. The study is carried out for the conditions when the thermophoretic force associated with the electron temperature gradient is one of the most important forces affecting dust grains in the sheath. It is shown that the sheath properties (the sheath size, the electron, ion and dust particle densities and velocities, the electric field potential, and the forces affecting the dust particles) are functions of the neutral gas pressure and ion temperature, the dust size, the dust material density, and the electron temperature gradient. Effects of plasma-dust collisions on the sheath structure are studied. It is shown that an increase in the forces pushing dust particles to the wall is accompanied by a decrease in the sheath width. The results of this work are particularly relevant to low-temperature plasma-enabled technologies, where effective control of nano- and microsized particles near solid or liquid surfaces is required.
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|Item Type:||Journal Article|
|Divisions:||Current > QUT Faculties and Divisions > Science & Engineering Faculty|
|Copyright Owner:||Copyright 2010 American Institute of Physics|
|Deposited On:||11 Jul 2014 02:04|
|Last Modified:||14 Jul 2014 00:45|
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