Enchanced hohlraum radiation drive through reduction of wall losses with high-Z mixture "cocktail" wall materials

Journal Article · Wed May 17 00:00:00 EDT 2006 · Physics Review Letters, vol. 98, N/A, April 27, 2007, pp. 175003

OSTI ID:936689

Schein, J; Jones, O; Rosen, M; Dewald, E; Glenzer, S; Gunther, J; Hammel, B; Landen, O; Suter, L; Wallace, R

We present results from experiments, numerical simulations and analytic modeling, demonstrating enhanced hohlraum performance. Care in the fabrication and handling of hohlraums with walls consisting of high-Z mixtures (cocktails) has led to our demonstration, for the first time, of a significant increase in radiation temperature (up to +7eV at 300 eV) compared to a pure Au hohlraum, in agreement with predictions and ascribable to reduced wall losses. The data extrapolated to full NIF suggest we can expect an 18% reduction in wall loss for the current ignition design by switching to cocktail hohlraums, consistent with requirements for ignition with 1MJ laser energy.

• Research Organization: Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States)
• Sponsoring Organization: USDOE
• DOE Contract Number: W-7405-ENG-48
• OSTI ID: 936689
• Report Number(s): UCRL-JRNL-221689; TRN: US200818%%1007
• Journal Information: Physics Review Letters, vol. 98, N/A, April 27, 2007, pp. 175003, Vol. 98
• Country of Publication: United States
• Language: English

Related Subjects

42 ENGINEERING
DESIGN
FABRICATION
IGNITION
LASERS
MIXTURES
PERFORMANCE
RADIATIONS
SIMULATION