Quantified reduction of wall material influx during Hohlraum experiments

Journal Article · Fri Oct 01 04:00:00 UTC 2004 · Review of Scientific Instruments

DOI:https://doi.org/10.1063/1.1787925· OSTI ID:20641196

Batha, Steven H; Fincke, James R ^[1]

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1. Los Alamos National Laboratory, Los Alamos, New Mexico 87544 (United States)

Heating the gold walls of a Hohlraum with intense laser beams produces a rapidly expanding gold plasma. Eventually, the wall material will converge on the axis of the Hohlraum with a density sufficient to be opaque to any standard radiography source. The gold expansion makes radiography of the back wall through the laser entrance hole of a Hohlraum driven from one side difficult. This experiment demonstrates a reduction of Au influx when the Hohlraum walls are coated with 0.44 {mu}m of parylene-N. The reduction is quantified, using an x-ray framing camera, in a cylindrical Hohlraum driven by 6.8 kJ of laser light.

• OSTI ID: 20641196
• Journal Information: Review of Scientific Instruments, Journal Name: Review of Scientific Instruments Journal Issue: 10 Vol. 75; ISSN 0034-6748; ISSN RSINAK
• Country of Publication: United States
• Language: English

Related Subjects

70 PLASMA PHYSICS AND FUSION TECHNOLOGY
CYLINDRICAL CONFIGURATION
INERTIAL CONFINEMENT
ORGANIC COMPOUNDS
PLASMA DIAGNOSTICS
PLASMA HEATING
PLASMA PRODUCTION
VISIBLE RADIATION
WALL EFFECTS