Cryogenic D-T fuel layers formed in 1 mm spheres by beta-layering

Journal Article · Mon Mar 01 00:00:00 EST 1999 · Fusion Technology

OSTI ID:328372

Sater, J; Burmann, J ^[1]; Pipes, J ^[2]; Kozioziemski, B; Collins, G W; Mapoles, E R; Bernat, T P ^[3]

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1. Schafer Corp., Livermore, CA (United States)
2. Allied Signal Inc., Livermore, CA (United States)
3. Lawrence Livermore National Lab., CA (United States)

Solid D-T fuel smoothly layered on the interior of spherical capsules is required for all inertial confinement fusion ignition target designs. One process for forming these layers, beta-layering, has been studied in surrogate geometries such as open cylinders or tori to allow accurate characterization of the DT surfaces. The authors present the first results from beta layering in 1 mm spherical containers, such as will be used in upcoming Omega experiments. These results are also directly relevant to ignition capsules for the National Ignition Facility. They find that layers can form with roughness as small as 1.2 microns rms, and that results are strongly dependent upon freezing rate as well as layer thickness.

• Sponsoring Organization: USDOE, Washington, DC (United States)
• DOE Contract Number: W-7405-ENG-48; AC03-95SF20732
• OSTI ID: 328372
• Journal Information: Fusion Technology, Vol. 35, Issue 2; Other Information: PBD: Mar 1999
• Country of Publication: United States
• Language: English

Related Subjects

70 PLASMA PHYSICS AND FUSION
LASER TARGETS
THERMONUCLEAR FUELS
DEUTERIUM
TRITIUM
DESIGN
FABRICATION
US NATIONAL IGNITION FACILITY
OMEGA FACILITY
ROUGHNESS
CRYOGENICS
SIZE