X-ray imaging of uniform large scale-length plasmas created from gas-filled targets on Nova

Conference · Sun May 01 04:00:00 EDT 1994

OSTI ID:10179990

Kalantar, D H; MacGowan, B J; Bernat, T P ^[1]

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1. and others

We report on the production and characterization of large scale-length plasmas created by illuminating gas-filled thin-walled balloon-like targets using the Nova laser. The targets consisted of a 4--5000 {angstrom} skin surrounding 1 atm of neopentane which when ionized becomes a plasma with 10{sup 21} electrons/cm{sup 3}. Results are presented from x-ray imaging used to evaluate the uniformity of the plasma. The most uniform plasmas were produced by illuminating the target with large converging beams that overlapped to cover most of the surface of the gasbag. An alternate focus geometry using small beam spots resulted in a less uniform plasma with low density holes in it.

• Research Organization: Lawrence Livermore National Lab., CA (United States)
• Sponsoring Organization: USDOE, Washington, DC (United States)
• DOE Contract Number: W-7405-ENG-48
• OSTI ID: 10179990
• Report Number(s): UCRL-JC--116195; CONF-940552--31; ON: DE94018339
• Country of Publication: United States
• Language: English

Related Subjects

70 PLASMA PHYSICS AND FUSION TECHNOLOGY
700320
700411
IMAGE PROCESSING
INERTIAL CONFINEMENT
INERTIAL CONFINEMENT DEVICES
LASER TARGETS
LASER-PRODUCED PLASMA
NOVA FACILITY
PLASMA DIAGNOSTIC TECHNIQUES AND INSTRUMENTATION
PLASMA DIAGNOSTICS
PLASMA PRODUCTION