Exploration of possible improvements to the n-ToF diagnostics at the National Ignition Facility
This M.S. thesis describes work related to a neutron time of flight (n-ToF) diagnostics at the National Ignition Facilitiy (NIF). The neutrons produced via deuterium-tritium (D-T) fusion reactions (14.1 MeV) in a laser imploded fuel capsule, emerge with an energy distribution reflecting both the fuel temperature and density. The density information is contained in the flux of “downscattered” neutrons (approximately 10-12 MeV) which arrive approximately 100 nsec after the main pulse at the n-ToF detectors' location. As the downscattered flux is much smaller (2-4 orders of magnitude, depending on ...
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