X-ray backlit imaging measurement of in-flight pusher density for an indirect drive capsule implosion

Journal Article · Wed Jan 01 04:00:00 EST 1997 · Review of Scientific Instruments

DOI:https://doi.org/10.1063/1.1147696· OSTI ID:451887

Kalantar, D H; Haan, S W; Hammel, B A; Keane, C J; Landen, O L; Munro, D H ^[1]

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

Both the efficiency of an implosion and the growth rate of hydrodynamic instability increase with the aspect ratio of an implosion. In order to study the physics of implosions with high Rayleigh{endash}Taylor growth factors, we use doped ablators which should minimize x-ray preheat and shell decompression, and hence increase in-flight aspect ratio. We use x-ray backlighting techniques to image the indirectly driven capsules. We record backlit 4.7 keV images of the full capsule throughout the implosion phase with 55 ps and 15 {mu}m resolution. We use these images to measure the in-flight aspect ratios for doped ablators, and we infer the radial density profile as a function of time by Abel inverting the x-ray transmission profiles. {copyright} {ital 1997 American Institute of Physics.}

• Research Organization: Lawrence Livermore National Laboratory
• DOE Contract Number: W-7405-ENG-48
• OSTI ID: 451887
• Report Number(s): CONF-960543--
• Journal Information: Review of Scientific Instruments, Journal Name: Review of Scientific Instruments Journal Issue: 1 Vol. 68; ISSN RSINAK; ISSN 0034-6748
• Country of Publication: United States
• Language: English

Related Subjects

70 PLASMA PHYSICS AND FUSION TECHNOLOGY
EFFICIENCY
EXPLOSIONS
IMAGES
IMPLOSIONS
INDIRECT DRIVE LASER IMPLOSION
INERTIAL CONFINEMENT
PLASMA DENSITY
PLASMA DIAGNOSTICS
PLASMA INSTABILITY
RAYLEIGH-TAYLOR INSTABILITY
X-RAY DETECTION
X-RAY RADIOGRAPHY
fusion reactor ignition
plasma inertial confinement
plasma production by laser