Abstract
The kinetic theory of twisted wave instability is developed for the
nonthermal dusty plasmas in the presence of helical electric field
carrying orbital angular momentum (OAM). The Laguerre Gaussian (LG) mode
function is employed to decompose the mode into its longitudinal and
azimuthal components. The longitudinal component illustrates the spatial
while the azimuthal component describes the phasor variation of the
wave. The dielectric functions of quasi-electrostatic dust ion acoustic
(DIA) and dust acoustic (DA) twisted modes are obtained and solved
analytically to calculate the growth rates. The numerical results are
also shown pictorially.