Starting from a three-wave interaction coefficient for a homogeneous Vlasov plasma we show that the parametric decay to half-harmonics has a zero growth rate if the pump wave wave number vanishes. Earlier proofs of this fact for electrostatic decay modes are then extended for a general case. As a specific example we study the decay of a fast magnetosonic wave to two slow waves.
|Place of Publication||Abingdon|
|Number of pages||13|
|Publication status||Published - 1991|
|MoE publication type||D4 Published development or research report or study|
|Series||JET Preprint Series|
Heikkinen, J., Pättikangas, T., Devillers, G., & JET Contributors (1991). On the decay of a dipole pump to half-harmonics. JET Preprint Series, No. JET-P(90)76 http://www.euro-fusionscipub.org/archives/jet-archive/on-the-decay-of-a-dipole-pump-to-half-harmonics