Plastic fiber scintillator response to fast neutrons

The Neutron Imaging System at NIF uses an array of plastic scintillator fibers in conjunction with a time-gated imaging system to form an image of the neutron emission from the imploded capsule. By gating on neutrons that have scattered from the 14.1 MeV DT energy to lower energy ranges, an image of...

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Bibliographic Details
Published in:Review of scientific instruments 2014-11, Vol.85 (11), p.11E607-11E607
Main Authors: Danly, C R, Sjue, S, Wilde, C H, Merrill, F E, Haight, R C
Format: Article
Language:English
Subjects:
CAPSULES
ENERGY LEVELS
FAST NEUTRONS
FIBERS
IMPLOSIONS
INSTRUMENTATION RELATED TO NUCLEAR SCIENCE AND TECHNOLOGY
LOS ALAMOS
NEUTRON DETECTION
NEUTRON EMISSION
NUCLEAR PHYSICS AND RADIATION PHYSICS
PLASTIC SCINTILLATORS
SPALLATION
US NATIONAL IGNITION FACILITY
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Summary:The Neutron Imaging System at NIF uses an array of plastic scintillator fibers in conjunction with a time-gated imaging system to form an image of the neutron emission from the imploded capsule. By gating on neutrons that have scattered from the 14.1 MeV DT energy to lower energy ranges, an image of the dense, cold fuel around the hotspot is also obtained. An unmoderated spallation neutron beamline at the Weapons Neutron Research facility at Los Alamos was used in conjunction with a time-gated imaging system to measure the yield of a scintillating fiber array over several energy bands ranging from 1 to 15 MeV. The results and comparison to simulation are presented.
ISSN:0034-6748
1089-7623
DOI:10.1063/1.4891160