Simulating NIF laser-plasma interaction with multiple SRS frequencies

Conference · Mon Oct 05 00:00:00 EDT 2009

DOI:https://doi.org/10.1088/1742-6596/244/2/022025· OSTI ID:967750

Still, C H; Hinkel, D E; Langdon, A B; Palastro, J P; Williams, E A

Understanding the energetics of a NIF ignition hohlraum is important to achieving ignition. Laser-plasma interactions (LPI) can reduce the radiation drive if backscatter occurs, and can also affect the hohlraum energetics by modifying the laser beam energy deposition which in turn can alter the implosion symmetry. The addition of a second SRS frequency to the modeling code pF3d can capture physics which would otherwise have been omitted. In the case of a wide or bi-modal SRS spectrum, this physics can be important. We discuss the modifications to the pF3d computational model, and exhibit its effect in a NIF ignition-relevant LPI simulation.

• Research Organization: Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States)
• Sponsoring Organization: USDOE
• DOE Contract Number: W-7405-ENG-48
• OSTI ID: 967750
• Report Number(s): LLNL-CONF-418575; TRN: US0904542
• Resource Relation: Journal Volume: 244; Journal Issue: 2; Conference: Presented at: Inertial Fusion Sciences and Applications, San Francisco, CA, United States, Sep 06 - Sep 11, 2009
• Country of Publication: United States
• Language: English

Related Subjects

70 PLASMA PHYSICS AND FUSION
IGNITION
IMPLOSIONS
LASERS
MODIFICATIONS
PHYSICS
RADIATIONS
SIMULATION
SYMMETRY