Solid debris collection for radiochemical diagnostics at the National Ignition Facility

Journal Article · Mon Oct 15 00:00:00 EDT 2012 · Review of Scientific Instruments

DOI:https://doi.org/10.1063/1.4732856· OSTI ID:22093871

Gostic, J. M.; Shaughnessy, D. A.; Moore, K. T.; Hutcheon, I. D.; Grant, P. M.; Moody, K. J. ^[1]

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1. Lawrence Livermore National Laboratory, 7000 East Ave, Livermore, California 94550 (United States)

Radiochemical analysis of post-ignition debris inside the National Ignition Facility (NIF) target chamber can help determine various diagnostic parameters associated with the implosion efficiency of the fusion capsule. This technique is limited by the ability to distinguish ablator material from other debris and by the collection efficiency of the capsule debris after implosion. Prior to designing an on-line collection system, the chemical nature and distribution of the debris inside the chamber must be determined. The focus of our current work has been on evaluating capture of activated Au hohlraum debris on passive foils (5 cm diameter, 50 cm from target center) post-shot. Preliminary data suggest that debris distribution is locally heterogeneous along the equatorial and polar line-of-sights.

• OSTI ID: 22093871
• Journal Information: Review of Scientific Instruments, Vol. 83, Issue 10; Other Information: (c) 2012 American Institute of Physics; Country of input: International Atomic Energy Agency (IAEA); ISSN 0034-6748
• Country of Publication: United States
• Language: English

Related Subjects

70 PLASMA PHYSICS AND FUSION TECHNOLOGY
38 RADIATION CHEMISTRY
RADIOCHEMISTRY AND NUCLEAR CHEMISTRY
CAPSULES
DISTRIBUTION
EFFICIENCY
EXPLOSIONS
FOILS
IMPLOSIONS
INERTIAL CONFINEMENT
PLASMA
PLASMA DIAGNOSTICS
RADIOCHEMICAL ANALYSIS
RADIOCHEMISTRY
SOLIDS
TARGET CHAMBERS
THERMONUCLEAR IGNITION
THERMONUCLEAR REACTORS
US NATIONAL IGNITION FACILITY