Fourth-Generation Laser for Ultra-Broadband Experiments-Expanding Inertial Confinement Fusion Design Space Through Mitigation of Laser-Plasma Instabilities
Abstract
To demonstrate hydro-equivalent ignition in OMEGA direct-drive experiments, mitigation of cross-beam energy transfer (CBET) and hot-electron generation is likely necessary. Laser-plasma instability (LPI) modeling predicts that an ultraviolet laser with Δω / ω >1% would increase the laser absorption on OMEGA implosion experiments from 55% to 90% by mitigating CBET while increasing the intensity threshold for hot-electron generation by a factor of 3. An LPI platform is currently being developed on OMEGA that will provide a test bed to demonstrate LPI mitigation using a novel laser FLUX (Fourth-generation Laser for Ultra-broadband eXperiments), which will produce Δω / ω >1% bandwidth around 351 nm.
This material is based upon work supported by the Department of Energy National Nuclear Security Administration under Award Number DE-NA0003856.- Publication:
-
APS Division of Plasma Physics Meeting Abstracts
- Pub Date:
- 2019
- Bibcode:
- 2019APS..DPPGO6002F