Existence domains of large amplitude dust-acoustic solitons in non-thermal plasmas with positive and negative dust

Journal Article · Tue Nov 29 04:00:00 EST 2011 · AIP Conference Proceedings

DOI:https://doi.org/10.1063/1.3659845· OSTI ID:21612231

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)

Using the traditional Sagdeev pseudopotential approach, the existence of large amplitude solitons is investigated for a plasma composed of cold negative dust, adiabatic positive dust, non-thermal ions and Boltzmann electrons. The lower and upper soliton Mach number limitations are determined as a function of various parameters and physical reasons are provided as to why these Mach number limits occur. Some regions in parameter space have been identified where only negative or positive solitons occur, whereas, other regions support the coexistence of both positive and negative potential solitons.

• OSTI ID: 21612231
• Journal Information: AIP Conference Proceedings, Journal Name: AIP Conference Proceedings Journal Issue: 1 Vol. 1397; ISSN APCPCS; ISSN 0094-243X
• Country of Publication: United States
• Language: English

Related Subjects

70 PLASMA PHYSICS AND FUSION TECHNOLOGY
ACOUSTICS
AMPLITUDES
CHARGED PARTICLES
DIMENSIONLESS NUMBERS
DUSTS
ELECTRIC POTENTIAL
ELECTRONS
ELEMENTARY PARTICLES
FERMIONS
IONS
LEPTONS
MACH NUMBER
PLASMA
PLASMA POTENTIAL
QUASI PARTICLES
SOLITONS
VELOCITY