DEVELOPMENT OF SOLID COLLECTION DIAGNOSTICS ON NIF THROUGH BLAST SHIELD ANALYSIS

Conference · Thu Dec 15 04:00:00 EST 2011

OSTI ID:1034517

Gostic, J M; Shaughnessy, D A; Grant, P M; Hutcheon, I D; Lewis, L A; Moody, K J

Radiochemical analysis of post-shot 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 capability is limited by the amount of target isotope that can be loaded inside the capsule ablator without affecting performance and the collection efficiency of the capsule debris after implosion. Prior to designing a collection system, the chemical nature and distribution of the debris inside the chamber must be determined and analysis methods developed. The focus of our current work has been on determining the elemental composition and distribution of debris on various blast shields and witness plates that were exposed to the chamber during ignition shots that occurred in 2009. These passive collection plates were used to develop both non-destructive and chemical analysis techniques to determine debris composition and melt depth at various shot energy profiles. A summary of these data will be presented along with our current strategy for the 2011 campaign.

• Research Organization: Lawrence Livermore National Laboratory (LLNL), Livermore, CA
• Sponsoring Organization: USDOE
• DOE Contract Number: W-7405-ENG-48
• OSTI ID: 1034517
• Report Number(s): LLNL-PROC-520621
• Country of Publication: United States
• Language: English

Related Subjects

70 PLASMA PHYSICS AND FUSION TECHNOLOGY
CHEMICAL ANALYSIS
DESIGN
DISTRIBUTION
EFFICIENCY
IGNITION
IMPLOSIONS
LANL
NONDESTRUCTIVE TESTING
NUCLEAR EXPLOSIVES
PERFORMANCE
RADIOCHEMICAL ANALYSIS
SHIELDS
TARGET CHAMBERS
TARGETS
US NATIONAL IGNITION FACILITY