Simulated NMIS Imaging Data for an Unknown Object

Walker, Mark E ; Mihalczo, John T

Oak Ridge National Laboratory

关键词: Neutrons;    Spontaneous Fission;    72 Physics Of Elementary Particles And Fields;    Neutron Generators;    Identification Systems;   

DOI  :  10.2172/1038485
RP-ID  :  ORNL/TM-2012/131
RP-ID  :  DE-AC05-00OR22725
RP-ID  :  1038485

美国|英语

来源: UNT Digital Library

【 摘 要 】

This report presents simulated Nuclear Materials Identification System (NMIS) imaging data for an unclassified object, whose characteristics are initially unknown to the reader. This data will be used to test various analysis capabilities and was created with a simple deterministic ray-tracing algorithm. NMIS is a time-dependent coincidence counting system that is used to characterize both fissile and non-fissile materials undergoing nondestructive assay. NMIS characterizes materials by interrogating them with neutrons, either from an associated-particle deuterium-tritium (DT) neutron generator, which produces a time and directionally tagged monoenergetic beam of 14.1 MeV neutrons, or a time-tagged spontaneous fission source in an ionization chamber.