期刊
出版社
ELSEVIER
DOI: 10.1016/j.nima.2020.164254
关键词
Fast neutron; Imaging; Spatial resolution; Lithium indium diselenide; LiInSe2; LISe
类别
资金
- CNS Y-12 National Security Complex [4300090406]
- Department of Energy Nuclear Energy University Programs Graduate Fellowship, USA
- U.S. Department of Energy, Office of Science, USA
- Office of Basic Energy Sciences, USA [DE-SC-0019446]
- [DE-FG02-88ER40387]
- [DE-NA0003883]
Fast neutron imaging is a powerful tool to investigate elemental/isotopic compositions of objects, supporting both scientific studies as well as cargo scanning. Current neutron imaging systems are faced with challenges associated with timing, detection efficiency, and/or spatial resolution. Here, we report on the use of a semiconducting lithium indium diselenide neutron sensor coupled to a Timepix ASIC for fast neutron imaging. Using a 15 cm thick copper knife edge, the spatial resolution of the neutron imager was found to be 1.55 mm for 9 MeV neutrons. The experimental detection efficiency at 9 MeV was in general agreement with calculations.
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