Heat transfer in dust structures in an RF discharge plasma

Journal Article · Sat Apr 15 00:00:00 EDT 2006 · Plasma Physics Reports

DOI:https://doi.org/10.1134/S1063780X06040076· OSTI ID:21080620

Fortov, V E; Vaulina, O S; Petrov, O F; Shakhova, I A; Gavrikov, A V; Khrustalev, Yu V ^[1]

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1. Russian Academy of Sciences, Institute for High Energy Densities (Russian Federation)

Results are presented from experimental studies of heat transfer in liquid-like plasma-dust structures. The experiments were performed with aluminum oxide grains {approx}3-5 {mu}m in size in an RF discharge plasma. The heat capacity of the dust grains in plasma is measured. The thermal conductivity and thermal diffusivity of liquid-like plasma-dust structures are deduced under the assumption that the observed temperature gradients and the propagation of a thermal perturbation in a dusty plasma are related to heat conduction within the dust component. The measured temperature dependences of the thermal conductivity and thermal diffusivity are in qualitative agreement with the results of numerical simulations performed in the model of a simple single-atom liquid. It is shown that quantitative discrepancy between the experimental and numerical results is related to the energy loss of dust grains in their collisions with the neutral particles of the ambient gas.

• OSTI ID: 21080620
• Journal Information: Plasma Physics Reports, Vol. 32, Issue 4; Other Information: DOI: 10.1134/S1063780X06040076; Copyright (c) 2006 Nauka/Interperiodica; Article Copyright (c) 2006 Pleiades Publishing, Inc; Country of input: International Atomic Energy Agency (IAEA); ISSN 1063-780X
• Country of Publication: United States
• Language: English

Related Subjects

70 PLASMA PHYSICS AND FUSION TECHNOLOGY
ALUMINIUM OXIDES
ATOMS
COLLISIONS
COMPUTERIZED SIMULATION
DISTURBANCES
DUSTS
ENERGY LOSSES
LIQUIDS
NEUTRAL PARTICLES
PERTURBATION THEORY
PLASMA
SPECIFIC HEAT
TEMPERATURE DEPENDENCE
TEMPERATURE GRADIENTS
THERMAL CONDUCTION
THERMAL CONDUCTIVITY
THERMAL DIFFUSIVITY