Nonlinear stage of parametric wave excitation in a plasma
Zakharov V.E., Musher S.L., Rubenchik A.M.
The spectra of Langmuir turbulence excited by a high-frequency electric field are investigated. It is shown that at large external-field amplitudes the distribution of the oscillations is essentially nonstationary. This leads to an oscillatory character of the energy absorption in the plasma.