Rugby-like hohlraum experimental designs for demonstrating x-ray drive enhancement

Journal Article · Tue Jan 15 04:00:00 EST 2008 · Physics of Plasmas

DOI:https://doi.org/10.1063/1.2825662· OSTI ID:21069969

Amendt, Peter; Cerjan, C; Hinkel, D E; Milovich, J L; Park, H -S; Robey, H F ^[1]

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1. Lawrence Livermore National Laboratory, University of California, Livermore, California 94551 (United States)

A suite of experimental designs for the Omega laser facility [Boehly et al., Opt. Commun. 133, 495 (1997)] using rugby and cylindrical hohlraums is proposed to confirm the energetics benefits of rugby-shaped hohlraums over cylinders under optimal implosion symmetry conditions. Postprocessed Dante x-ray drive measurements predict a 12-17 eV (23%-36%) peak hohlraum temperature (x-ray flux) enhancement for a 1 ns flattop laser drive history. Simulated core self-emission x-ray histories also show earlier implosion times by 200-400 ps, depending on the hohlraum case-to-capsule ratio and laser-entrance-hole size. Capsules filled with 10 or 50 atm of deuterium (DD) are predicted to give in excess of 10{sup 10} neutrons in two-dimensional hohlraum simulations in the absence of mix, enabling DD burn history measurements for the first time in indirect-drive on Omega. Capsule designs with 50 atm of D{sup 3}He are also proposed to make use of proton slowing for independently verifying the drive benefits of rugby hohlraums. Scale-5/4 hohlraum designs are also introduced to provide further margin to potential laser-plasma-induced backscatter and hot-electron production.

• OSTI ID: 21069969
• Journal Information: Physics of Plasmas, Journal Name: Physics of Plasmas Journal Issue: 1 Vol. 15; ISSN PHPAEN; ISSN 1070-664X
• Country of Publication: United States
• Language: English

Related Subjects

70 PLASMA PHYSICS AND FUSION TECHNOLOGY
CAPSULES
DESIGN
DEUTERIUM
ELECTRON TEMPERATURE
ELECTRONS
ICF DEVICES
INERTIAL CONFINEMENT
ION TEMPERATURE
LASER IMPLOSIONS
LASERS
NEUTRONS
OMEGA FACILITY
PLASMA
PLASMA PRODUCTION
PLASMA SIMULATION
PROTONS
X RADIATION