Low frequency solitons and double layers in a magnetized plasma with two temperature electrons

Journal Article · Sat Dec 15 04:00:00 EST 2012 · Physics of Plasmas

DOI:https://doi.org/10.1063/1.4771574· OSTI ID:22072624

Rufai, O R ^[1]; Bharuthram, R ^[2]; Singh, S V ^[3]; Lakhina, G S ^[3]

---

1. Department of Physics, University of the Western Cape, Private Bag X17, Bellville 7535 (South Africa)
2. Office of the Deputy Vice Chancellor (Academic), University of the Western Cape, Bellville (South Africa)
3. Indian Institute of Geomagnetism, New Panvel (W), Navi Mumbai-410218 (India)

Finite amplitude non-linear ion-acoustic solitary waves and double layers are studied in a magnetized plasma with cold ions fluid and two distinct groups of Boltzmann electrons, using the Sagdeev pseudo-potential technique. The conditions under which the solitary waves and double layers can exist are found both analytically and numerically. We have shown the existence of negative potential solitary waves and double layers for subsonic Mach numbers, whereas in the unmagnetized plasma they can only in the supersonic Mach number regime. For the plasma parameters in the auroral region, the electric field amplitude of the solitary structures comes out to be 49 mV/m which is in agreement of the Viking observations in this region.

• OSTI ID: 22072624
• Journal Information: Physics of Plasmas, Journal Name: Physics of Plasmas Journal Issue: 12 Vol. 19; ISSN PHPAEN; ISSN 1070-664X
• Country of Publication: United States
• Language: English

Related Subjects

70 PLASMA PHYSICS AND FUSION TECHNOLOGY
AMPLITUDES
ELECTRIC FIELDS
ELECTRON TEMPERATURE
ELECTRONS
ION ACOUSTIC WAVES
IONOSPHERE
IONS
LAYERS
MACH NUMBER
NONLINEAR PROBLEMS
PLASMA
SOLITONS