WebJan 1, 1986 · A general formalism of parametric instabilities of electrostatic and electromagnetic waves in a magnetized plasma is presented. The Vlasov equation has … WebIn this paper, weak turbulence theory is used to investigate the nonlinear evolution of the parametric instability in 3D low- β plasmas at wavelengths much greater than the ion inertial length under the assumption that slow magnetosonic waves are strongly damped.

A theoretical investigation on the parametric instability excited by X‐mo…

WebThis feature, known as the decay line, is produced by the parametric decay instability (e.g. Hanssen et al., 1992). The UHF plasma line spectra in Figure 2 show both a decay line and a line at the HF pump frequency, which appears to be the purely growing line produced by the modulational instability, with the former being stronger. WebPARAMETRIC INSTABILITY The linear phase of the parametric instability of a plasma located in a uniform field has been thoroughly investigated in a number of papers [1-3] • Here we state briefly the pertinent results in hydrodynamic approx imation, i.e., in the framework of the Eqs. (10). The zero-order solution of Eq. biology academic journals

Spectral broadening of parametric instability in lower hybrid …

WebApr 7, 2016 · In parametric decay instability, the pump wave decays to a high-frequency plasma wave and a low-frequency plasma wave . In the oscillating two-stream instability, … WebOct 8, 2016 · Parametric instabilities are a common wave-wave interaction. They arise when a nonlinearity such as a pressure gradient couples waves. The waves must allow frequency and wavenumber matching which are consequences of energy and momentum … WebA purely growing instability characterized by a four-wave interaction has been analysed in a uniform, magnetized plasma. Up-shifted and down-shifted upper-hybrid waves and a non-oscillatory mode can be excited by a pump wave of ordinary rather than extraordinary polarization in the case of ionospheric heating. biology acara