PHYSICS OF GASES, PLASMAS, AND ELECTRIC DISCHARGES |
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Suprathermality Effects on Propagation Properties of Ion Acoustic Waves |
Mehran Shahmansouri* |
Department of Physics, Faculty of Science, Arak University, Arak, P.O. Box 38156-8-8349, Iran
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Cite this article: |
Mehran Shahmansouri 2012 Chin. Phys. Lett. 29 105201 |
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Abstract A theoretical investigation is carried out to understand the basic features of ion-acoustic (IA) waves in an unmagnetised plasmas including cool ions, hot ions having a kappa distribution and kappa-distributed electrons, using small amplitude techniques. The effects of excess suprathermal ions, the ion temperature Ti and electron temperature Te as well as the density ratio on the IA waves are studied. It is found that the suprathermality effects play an important role in the system, as the geometric characteristics of the IA solitons are found to be significantly affected through the ion and electron suprathermal index. In the presence of suprathermality effects, either polarity is in principle supported by this plasma model.
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Received: 13 April 2012
Published: 01 October 2012
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PACS: |
52.27.Lw
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(Dusty or complex plasmas; plasma crystals)
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52.35.Sb
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(Solitons; BGK modes)
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52.35.Mw
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(Nonlinear phenomena: waves, wave propagation, and other interactions (including parametric effects, mode coupling, ponderomotive effects, etc.))
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[1] Bharuthram R and Shukla P K 1986 Phys. Fluids 20 3214 [2] Nakamura Y 1982 IEEE Trans. Plasma Sci. 7 232 [3] Tribeche M, Amour R and Shukla P K 2012 Phys. Rev. E 85 037401 [4] Ikezi H, Taylor R and Baker D 1970 Phys. Rev. Lett. 25 11 [5] Stix T H 1992 Waves in Plasmas (New York: AIP) [6] Koepke M E 2002 Phys. Plasmas 9 2420 [7] Cranmer S R, Ballegooijen A A and Edgar R J 2007 Astrophys. J. 171 520 [8] Prudskikh V V 2010 Plasma Phys. Rep. 36 993 [9] Shukla P K and Stenflo L 1993 Astrophys. Space Sci. 209 323 [10] Zhou Q H, Jiang B, Shi X H and Li J Q 2009 Chin. Phys. Lett. 26 025201 [11] Baluku T K, Hellberg M A, Kourakis I and Saini N S 2010 Phys. Plasmas 17 053702 [12] Shahmansouri M and Tribeche M 2012 Astrophys. Space Sci. (in press) [13] El-Awady E I, El-Tantawy S A, Moslem W M and Shukla P K 2010 Phys. Lett. A 374 3216 [14] Shah A and Saeed R 2011 Plasma Phys. Control. Fusion 53 095006 [15] Sahu B 2011 Phys. Plasmas 18 062308 [16] Sultana S, Kourakis I, Saini N S and Helberg M A 2010 Phys. Plasmas 17 032310 [17] Alinejad H and Mamun A A 2011 Phys. Plasmas 18 112103 [18] Hussain S, Akhtar N and Mahmood S 2011 Astrophys. Space. Sci. [19] Baluku T K and Hellberg M A 2012 Phys. Plasmas 19 012106 [20] Tribeche M, Mayout S and Amour R 2009 Phys. Plasmas 16 043706 [21] Baluku T K and Hellberg M A 2008 Phys. Plasmas 15 123705 [22] Mace R L, Baboolal S, Bharuthram R and Hellberg M A 1991 J. Plasma Phys. 45 323 |
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