Evaluation of the RADCHEM Diagnostic as an Assessment of Fuel-Ablator Mix and Fuel Rho R
The RADCHEM diagnostic consists of the collection of both gaseous and solid debris samples following a NIF shot. Small amounts of detector elements are doped into the inner-most layer of the ablator shell, which then undergo nuclear activations with neutrons and/or charged particles that are produced during the fusion process. Reaction products are collected and their radioactive decays are counted in order to determine the number and type of activations that occurred. Simulations have shown that these data can then be correlated to several capsule parameters, including fuel rhoR ({rho}R), implosion asymmetry, and fuel-ablator mix. In this document we present a brief summary of the simulations that have been performed, and evalute the ability of RADCHEM to assess capsule performance. A longer, follow-on document, which will include more details on the specific simulations and experimental techniques that have been considered for RADCHEM, is currently being written.
- Research Organization:
- Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States)
- Sponsoring Organization:
- USDOE
- DOE Contract Number:
- W-7405-ENG-48
- OSTI ID:
- 1021543
- Report Number(s):
- LLNL-TR-472595; TRN: US1104191
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
38 RADIATION CHEMISTRY, RADIOCHEMISTRY, AND NUCLEAR CHEMISTRY
ABLATION
ASYMMETRY
CAPSULES
RADIOCHEMICAL ANALYSIS
CHARGED PARTICLES
EVALUATION
FUELS
IMPLOSIONS
NEUTRONS
NEUTRON ACTIVATION ANALYSIS
NUCLEAR DECAY
NUCLEAR FUELS
PERFORMANCE
SIMULATION
SOLIDS
US NATIONAL IGNITION FACILITY