ROLE OF DUST GRAINS IN PARAMETRIC COUPLING OF A LOWER HYBRID PUMP WAVE WITH NEUTRAL BEAM DRIVEN ION CYCLOTRON INSTABILITY IN A TOKOMAK

Abstract

I, have developed a model on Role of Dust Grains in parametric coupling of a lower hybrid pump wave with neutral beam driven ion-cyclotron instability in a tokomak. I, have found that the growth rate of mode increases with the relative density of dust grains  and dust grain density 0 d rn .It has also been observed that the growth rate increases with reducing the dust grain sizea.