Direct Measurement of X-Ray Drive from Surrogate Targets in Nova Hohlraums

Journal Article · Tue Oct 01 00:00:00 EDT 1996 · Physical Review Letters

DOI:https://doi.org/10.1103/PhysRevLett.77.3815· OSTI ID:389376

Amendt, P; Glendinning, S; Hammel, B; Landen, O; Suter, L ^[1]

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1. Lawrence Livermore National Laboratory, University of California, Livermore, California 94550 (United States)

A new method for measuring x-ray drive in Nova hohlraums near target center using surrogate targets is proposed as an alternative to conventional wall-based techniques. A solid, low-density (0.3g/cm{sup 3}) SiO{sub 2} aerogel ball placed at the center of a Nova hohlraum is used to infer x-ray drive from the backlighter-imaged ablatively driven shock trajectory. A nearly 10{percent} (40{percent}) increase in peak radiation temperature (flux) near the hohlraum center in the presence of axial shields is predicted from radiation-hydrodynamics simulations and corroborated by experiment. {copyright} {ital 1996 The American Physical Society.}

• Research Organization: Lawrence Livermore National Laboratory
• DOE Contract Number: W-7405-ENG-48
• OSTI ID: 389376
• Journal Information: Physical Review Letters, Journal Name: Physical Review Letters Journal Issue: 18 Vol. 77; ISSN 0031-9007; ISSN PRLTAO
• Country of Publication: United States
• Language: English

Related Subjects

70 PLASMA PHYSICS AND FUSION TECHNOLOGY
ABSOLUTE COUNTING
HYDRODYNAMICS
ICF DEVICES
PLASMA CONFINEMENT
RADIATIONS
SILICON OXIDES
SIMULATION
TARGETS
TRAJECTORIES
X RADIATION
X-RAY SPECTRA