Speaker
Russell K. Follett
Description
See the full Abstract at http://ocs.ciemat.es/EPS2018ABS/pdf/P1.2022.pdf
Two-plasmon–decay mitigation using laser-frequency detuning
R. K. Follett
Laboratory for Laser Energetics, University of Rochester
Three-dimensional laser–plasma interaction simulations show that laser-frequency detuning
by an amount achievable with current laser technology can be used to suppress the
two-plasmon–decay (TPD) instability and the corresponding hot-electron generation. For the
plasma conditions and laser configuration in a direct-drive inertial confinement fusion
implosion on the OMEGA laser, 3-D LPSE (laser-plasma simulation environment)
simulations show that 0.7% laser-frequency detuning is sufficient to eliminate TPD-driven
hot-electron generation in current OMEGA implosions. This allows for higher ablation
pressures in future implosion designs by using higher laser intensities. This material is based
upon work supported by the Department of Energy National Nuclear Security
Administration under Award Number DE-NA0001944, the University of Rochester, and the
New York State Energy Research and Development Authority. The support of DOE does not
constitute an endorsement by DOE of the views expressed in this article.
