Effect of hot ions on ion acoustic solitons and holes

Dash, Shefali S.; Buti, B.

doi:10.1016/0375-9601(81)90086-4

Cited by 13 publications

(2 citation statements)

References 3 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The holes are caused by the second component of the electrons. Dash & Buti (1981) studied the effect of hot ions on ion-acoustic solitons and holes. Finite ion temperature has been found to decrease the maximum amplitude of the solitons and the allowed regions for the solitons as well as the holes.…”

Section: Introductionmentioning

confidence: 99%

Linear and nonlinear propagation of electron-acoustic wave in a multi-species plasma

Guha

Dwivedi

1984

J. Plasma Phys.

View full text Add to dashboard Cite

The propagation of an electron-acoustic wave in a plasma consisting of two types of ion and two temperature electrons has been investigated in the linear and nonlinear regimes. The presence of the second species of ion modifies the characteristics of the wave. The analysis has been done for both the finite amplitude and the small amplitude case of the electron-acoustic solitary wave. The ion temperature ratio and the electron density ratio rather than the relative ion density are the effective parameters which govern the amplitude of the electron-acoustic soliton.

show abstract

Section: Introductionmentioning

confidence: 99%

Linear and nonlinear propagation of electron-acoustic wave in a multi-species plasma

Guha

Dwivedi

1984

J. Plasma Phys.

View full text Add to dashboard Cite

show abstract

“…Before proceeding to analyse (10) and (13a, 6) we should mention that finite ion temperature effects, neglected here, may become important under certain circumstances, since they affect the low-frequency nonlinearity (Schamel 1972;Dash &Buti 1981).…”

Section: Derivation Of Equationsmentioning

confidence: 99%

Langmuir solitons in a two-temperature plasma

Buti

1981

J. Plasma Phys.

Self Cite

View full text Add to dashboard Cite

show abstract

A Pair of Coupled Equations for High Frequency Langmuir Wave and Low Frequency Potential

Bhakta

1989

Contrib. Plasma Phys.

View full text Add to dashboard Cite

A coupled pair of nonlinear equations for the amplitude modulated Langmuir wave and the associated low frequency electric potential wave have been derived by relaxing quasineutrality condition of the frequency motion. Solitary wave solutions exist. It is found that the small correction term due to ion pressure changes the amplitude of the solitary wave. 1: IntroductionZAKHAROV equations [l] describe the interaction of high frequency Langmuir waves with low frequency plasma density fluctuations. The coupling between the high and low frequency oscillations arise through the ponderomotive force. The low frequency ion wave equation is derived from the' linear response of the low frequency motion. The charge neutrality is assumed for the low frequency part of the ion motion. Solitary wave solutions exist for these equations. If the soliton velocity tends toward the ionsound velocity the response time of the ion motions is increasingly important to the nature of the Langmuir solitons and the ZAKHAROV equations break down [2]. Therofore the nonlinearity of ion dynamics plays a vital roll in this case. I n experiments [3, 41 density depression of more than 10% have been observed. It was shown that nonlinearity of ion motion must be taken into account when the group velocity of the Langmuir wave is equal to the group velocity of ion acoustic waves taking the latter's dispersion into account [5, 61. I n this case the propagations of the two interacting waves -the Langmuir wave and the ion acoustic wave are described by a pair of coupled nonlinear Schrodinger equations. If the velocity of the plasma density is sufficiently closed to the ion sound velocity then, in some cases, the governing equations of motions are nonlinear Schrodinger equation describing the Langmuir wave is coupled to Korteweg-de Vries (KdV) or Boussinesq type equation [7-91. In this case the density cavity is sufficient to trap two solitons. The problem of transition from trapping of one soliton to trapping of two solitons was investigated by RAO and VERMA [lo] relaxing the quasineutrality condition of the low frequency motion.I n this paper we consider two fluid model hydrodynamic together with Poisson's equations where small effect due to ion pressure has been introduced. The problem is different from that of RAO and VERMA [lo] due to the count of the later effect. We have also concentrated our attention where the low frequen.cy potential is of the order of the square of the magnitude of the high frequency Langmuir field. We have also assumed that the ion acoustic wave phase velocity is much smaller than the electron thermal 1 Contrib. Plasma Phya. 29 (1989) 2

show abstract

Effect of hot ions on ion acoustic solitons and holes

Cited by 13 publications

References 3 publications

Linear and nonlinear propagation of electron-acoustic wave in a multi-species plasma

Linear and nonlinear propagation of electron-acoustic wave in a multi-species plasma

Langmuir solitons in a two-temperature plasma

A Pair of Coupled Equations for High Frequency Langmuir Wave and Low Frequency Potential

Contact Info

Product

Resources

About