Large amplitude dust-acoustic double layers in non-thermal plasmas with positive and negative dust

Journal Article · Tue Nov 29 00:00:00 EST 2011 · AIP Conference Proceedings

DOI:https://doi.org/10.1063/1.3659846· OSTI ID:21612232

Maharaj, S K ^[1]; Bharuthram, R ^[2]; Singh, S V; Lakhina, G S ^[3]; Pillay, S R ^[4]

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1. South African National Space Agency Space Science, P O Box 32, Hermanus 7200 (South Africa)
2. University of the Western Cape, Modderdam Road, Bellville 7530 (South Africa)
3. Indian Institute of Geomagnetism, New Panvel, Navi Mumbai 410218 (India)
4. University of KwaZulu-Natal, Private Bag X54001, Durban 4000 (South Africa)

The existence of large amplitude double layers in a plasma composed of cold negative dust, adiabatic positive dust, non-thermal ions and Boltzmann electrons is investigated using the Sagdeev pseudopotential technique. Both positive potential and negative potential double layers are found to be supported by the model. The variation of the maximum amplitudes of the double layers and corresponding Mach numbers are examined as a function of various plasma parameters. In particular, we investigate to what extent ion non-thermal effects are required for positive potential double layers to occur.

• OSTI ID: 21612232
• Journal Information: AIP Conference Proceedings, Vol. 1397, Issue 1; Conference: 6. international conference on the physics of dusty plasmas, Garmisch-Partenkirchen (Germany), 16-20 May 2011; Other Information: DOI: 10.1063/1.3659846; (c) 2011 American Institute of Physics; Country of input: International Atomic Energy Agency (IAEA); ISSN 0094-243X
• Country of Publication: United States
• Language: English

Related Subjects

70 PLASMA PHYSICS AND FUSION TECHNOLOGY
AMPLITUDES
DUSTS
ELECTRON TEMPERATURE
ELECTRONS
ION TEMPERATURE
IONS
LAYERS
PLASMA
PLASMA POTENTIAL
TEMPERATURE DEPENDENCE
TEMPERATURE MEASUREMENT
CHARGED PARTICLES
ELECTRIC POTENTIAL
ELEMENTARY PARTICLES
FERMIONS
LEPTONS