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Title: Reconstruction of 2D x-ray radiographs at the National Ignition Facility using pinhole tomography (invited)

Journal Article · · Review of Scientific Instruments
DOI:https://doi.org/10.1063/1.4890395· OSTI ID:1809157
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  1. Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States)
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Two-dimensional radiographs of imploding fusion capsules are obtained at the National Ignition Facility by projection through a pinhole array onto a time-gated framing camera. Additionally, parallax among images in the image array makes it possible to distinguish contributions from the capsule and from the backlighter, permitting correction of backlighter non-uniformities within the capsule radiograph. Furthermore, precise determination of the imaging system geometry and implosion velocity enables combination of multiple images to reduce signal-to-noise and discover new capsule features.

Research Organization:
Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States)
Sponsoring Organization:
USDOE National Nuclear Security Administration (NNSA)
Grant/Contract Number:
AC52-07NA27344
OSTI ID:
1809157
Report Number(s):
LLNL-JRNL-655724; 776327; TRN: US2213143
Journal Information:
Review of Scientific Instruments, Vol. 85, Issue 11; ISSN 0034-6748
Publisher:
American Institute of Physics (AIP)Copyright Statement
Country of Publication:
United States
Language:
English
Citation Metrics:
Cited by: 13 works
Citation information provided by
Web of Science

References (8)

NIF Ignition Campaign Target Performance and Requirements: Status May 2012 journal April 2013
Gated x-ray detector for the National Ignition Facility journal October 2006
2D X-Ray Radiography of Imploding Capsules at the National Ignition Facility journal May 2014
Improvements to Formvar Tent Fabrication Using the Meniscus Coater journal January 2011
Radiation tolerance of ultra-thin Formvar films journal August 2012
IR Absorptive Properties of Plastic Materials Used in ICF Capsules journal March 2004
Enhanced Delamination of Ultrathin Free-Standing Polymer Films via Self-Limiting Surface Modification journal April 2014
NIF Ignition Campaign Target Performance and Requirements: Status May 2012 journal March 2013

Cited By (5)

Cryogenic tritium-hydrogen-deuterium and deuterium-tritium layer implosions with high density carbon ablators in near-vacuum hohlraums journal June 2015
Tent-induced perturbations on areal density of implosions at the National Ignition Facilitya) journal May 2015
Hydrodynamic instability growth of three-dimensional modulations in radiation-driven implosions with “low-foot” and “high-foot” drives at the National Ignition Facility journal April 2017
Improving ICF implosion performance with alternative capsule supports journal May 2017
Hydrodynamic instability growth of three-dimensional, “native-roughness” modulations in x-ray driven, spherical implosions at the National Ignition Facility journal July 2015

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