ion acoustic wavesforeshockdispersion relationIn this paper we study electrostatic waves with time-dependent frequency features in the terrestrial foreshock. These short (0.1-0.3 s) duration waves are characterized by a significant frequency drift where the peak wave power shifts from a few hundred ...
We study the evolution of Langmuir waves coupled to the ion acoustic wave by means of the ponderomotive force in the Karpman limit (caviton equation). Using the spectral transform with singular dispersion relation, it is shown that the background noise (fluctuations in the ion density) is ampl...
Stability of ion-acoustic waves in weakly ionized unmagnetized plasmas is investigated using fluid equations, assuming an arbitrary dependence of ion production and loss rates on electron and ion densities. The linear dispersion relation is derived and the condition for the positive growth rate is ide...
Coupled wave equations have been developed for the propagation of electromagnetic, electron acoustic and ion acoustic waves in a homogeneous, warm magnetoplasma employing the linearized two-fluid continuum theory of partially ionized plasma dynamics. For the purpose of this study propagation is considered...
The effects of harmonic generation and wave dispersion are taken into account. The driver frequency and wave number do not necessarily satisfy the linear ion-acoustic wave dispersion relation, allowing a frequency mismatch between the driver frequency and the plasma linear-response frequency. The ...
The Plasma Dispersion Function. New York: Academic Press, 1961. 35. Pandey R.S., Misra K.D. and Tripathi A.K. Generation of ion-cyclotron wave by parallel flow velocity shear in the presence of inhomogeneous electric field in an anisotropic magneto-plasma. Indian J. Radio Space Phys. ...
Dispersion Relation for the Lowest Mode of the Ion-Acoustic Instability in a High-Current Ion Laser The lowest frequency mode of the ion-acoustic instability in a high-current low-pressure wall-confined discharge, which serves as an active medium of cw io... VI Donin,VA Ivanov,DV Yakovin ...
We also note that the sound speed of the system is significantly modified by adding the random friction force within the Langevin dynamics.Figure 3displays the respective dispersion relations for the acoustic peaks explicitly. Moreover, it shows that this trend can be found in both quantum simulati...
The ion sheath instability with half the ion plasma frequency was observed around the separation grid in a double plasma containing negative ions, where the dominant negative ion species was specified from the dispersion relation of the ion acoustic wave. Detailed behavior of ion sheath instability ...
Electron current driven ion acoustic standing wave instability By means of a positively biased grid an electron current driven instability is excited in a single ended Q-machine. The instability shows the behaviour of ... R Schrittwieser - 《Physics Letters A》 被引量: 29发表: 1978年 加载更多...