Study of Coulomb collisional effects on the propagation of electromagnetic waves in a turbulent plasma

Abstract

The presence of Weibel instability in laser-irradiated fuel could be detrimental to the process of ablative implosion, which is necessary for achieving thermonuclear fusion reactions. In this paper, the effect of the Coulomb collisional within the turbulent plasma on the Weibel instability growth rate has been investigated for linear and circular polarization. The results indicate that the Weibel instability growth rate at circular polarization near the ignition centre of the fuel fusion (collisional plasma) is about 10 5 times higher than the collisional Weibel instability growth rate at linear polarization. The Weibel instability growth rate is observed near the critical density of the fuel fusion (collisionless plasma) at linear polarization and enhancement near the foot of the heat in front of the fuel fusion. By increasing the steps of the density gradient plasma in the low-density corona, electromagnetic instability occurs at a higher stress flow. Therefore, the deposition condition of electron beam energy in circular polarization of turbulent plasma can be shifted to the fuel core for suitable ignition.

Shocks and solitons in collisional dense laser produced plasmas

“…The thermal conduction between the layers and the ablated surfaces in such devices where the fusion is controlled by inertial confinement needs greater attention. When the laser pulse is absorbed by the capsule type (direct drive) or hohlraum type (indirect laser drive), outer layers of the ablated target launches a series of nonlinear waves like shocks inwards [47][48][49]. Studies on the parametric dependence of the propagation of these nonlinear waves will give greater insight.…”