A novel technique to make foam shells with high sphericity and wall uniformity for cryogenic laser fusion targets
- Institute of Laser Engineering, Osaka University, 2-6, Yamada-oka, Suita, Osaka 565, Japan (JP)
- Nihon Sanso Corporation, 4-230, Tsukagoshi, Saiwaiku, Kawasaki 210, Japan (JP)
A new technique to make low-density, low-atomic-number foam shells was developed for use in cryogenic laser fusion targets. Shells with sphericity {gt} 99% and wall uniformity {gt} 97% were fabricated by a density matched emulsion method using cross-linked copolymerization in the oil phase of the emulsion. The diameter, wall thickness and density of the shells ranged in 100--1500 {mu}m, 10--150 {mu}m, and 90--310 mg/cm{sup 3}, respectively. Some foam shells exhibited a membrane on the outer surface, which could be used as the protective layer to prevent liquid fuel from boiling off. The foam shell was transparent when it was saturated with liquid deuterium. This enables us to characterize distribution of the liquid fuel in the shell using an optical interference technique.
- OSTI ID:
- 5650926
- Journal Information:
- Journal of Vacuum Science and Technology, A (Vacuum, Surfaces and Films); (USA), Journal Name: Journal of Vacuum Science and Technology, A (Vacuum, Surfaces and Films); (USA) Vol. 9:3; ISSN 0734-2101; ISSN JVTAD
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
700208* -- Fusion Power Plant Technology-- Inertial Confinement Technology
CHEMICAL REACTIONS
COLLOIDS
CONFIGURATION
CRYOGENICS
DEUTERIUM
DISPERSIONS
EMULSIONS
FABRICATION
FLUIDS
FOAMS
HYDROGEN ISOTOPES
ISOTOPES
LASER FUSION REACTORS
LASER TARGETS
LIGHT NUCLEI
LIQUIDS
NUCLEI
ODD-ODD NUCLEI
POLYMERIZATION
SHELLS
SPHERICAL CONFIGURATION
STABLE ISOTOPES
TARGETS
THERMONUCLEAR REACTORS