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
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.
收稿日期: 2012-04-13
出版日期: 2012-10-01
:
52.27.Lw
(Dusty or complex plasmas; plasma crystals)
52.35.Sb
(Solitons; BGK modes)
52.35.Mw
(Nonlinear phenomena: waves, wave propagation, and other interactions (including parametric effects, mode coupling, ponderomotive effects, etc.))
[1] Bharuthram R and Shukla P K 1986 Phys. Fluids 20 3214IEEE Trans. Plasma Sci. 7 2322012 Phys. Rev. E 85 037401 1970 Phys. Rev. Lett. 25 11 Waves in Plasmas (New York: AIP)2002 Phys. Plasmas 9 2420 2007 Astrophys. J. 171 520 2010 Plasma Phys. Rep. 36 993 1993 Astrophys. Space Sci. 209 323 2009 Chin. Phys. Lett. 26 025201 2010 Phys. Plasmas 17 053702 2012 Astrophys. Space Sci. (in press) 2010 Phys. Lett. A 374 3216 2011 Plasma Phys. Control. Fusion 53 095006 2011 Phys. Plasmas 18 062308 2010 Phys. Plasmas 17 032310 2011 Phys. Plasmas 18 112103 2011 Astrophys. Space. Sci. 2012 Phys. Plasmas 19 012106 2009 Phys. Plasmas 16 043706 2008 Phys. Plasmas 15 123705 1991 J. Plasma Phys. 45 323
[1]
.
[2]
.
[3]
.
[4]
.
[5]
.
[6]
.
[7]
.
[8]
.
[9]
.
[10]
B. Farokhi, M. Eghbali. Effects of an Electric Field on the Cylindrical Dust Acoustic Wave in Magnetized Complex Plasmas
[11]
Hafeez Ur Rehman. Electrostatic Dust Acoustic Solitons in Pair-Ion-Electron Plasmas
[12]
B. Farokhi* , A. Hameditabar. Comparison of Dust Lattice Waves in Three-Dimensional Cubic Configurations
[13]
WU Jing;**;ZHANG Peng-Yun;SUN Ji-Zhong;YAO Lie-Ming;DUAN Xu-Ru
. Dust Particle Density and Charges in Radio-Frequency Mixture Discharge Plasma
[14]
B. Farokhi;** F. Amini;M. Eghbali
. Dust Acoustic Rotation Modes in Magnetized Complex Plasmas
[15]
HUANG Feng**;LIU Yan-Hong;YE Mao-Fu;WANG Xue-Jin;WANG Long
. Structures and Dynamics of Two-Dimensional Dust Lattices with and without Coulomb Molecules in Plasmas
2012, Vol. 29 
