Non-linear Decay Interactions
Part of the Springer Series on Atoms+Plasmas book series (SSAOPP, volume 17)
The simplest decay process is a wave-wave emission process, that is, a nonlinear interaction in which a wave of a particular type decays and produces another wave of the same type as well as a wave of a different type. An example is the decay of a Langmuir wave into another Langmuir wave and an ion-sound wave. This process can be considered to be the emission of an ion-sound wave by a Langmuir wave. Symbolically we can write this process in the form
$$\ell \rightleftarrows \ell ' + s.$$
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© Springer-Verlag Berlin Heidelberg 1995