skip to main content

Title: Efficient scalable solid-state neutron detector

We report on scalable solid-state neutron detector system that is specifically designed to yield high thermal neutron detection sensitivity. The basic detector unit in this system is made of a {sup 6}Li foil coupled to two crystalline silicon diodes. The theoretical intrinsic efficiency of a detector-unit is 23.8% and that of detector element comprising a stack of five detector-units is 60%. Based on the measured performance of this detector-unit, the performance of a detector system comprising a planar array of detector elements, scaled to encompass effective area of 0.43 m{sup 2}, is estimated to yield the minimum absolute efficiency required of radiological portal monitors used in homeland security.
Authors:
 [1]
  1. Center for Polymers and Organic Solids, University of California, Santa Barbara, California 93106-5090 (United States)
Publication Date:
OSTI Identifier:
22483248
Resource Type:
Journal Article
Resource Relation:
Journal Name: Review of Scientific Instruments; Journal Volume: 86; Journal Issue: 6; Other Information: (c) 2015 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
46 INSTRUMENTATION RELATED TO NUCLEAR SCIENCE AND TECHNOLOGY; DESIGN; EFFICIENCY; FOILS; LITHIUM 6; NEUTRON DETECTION; NEUTRON DETECTORS; PERFORMANCE; SECURITY; SENSITIVITY; SILICON DIODES; THERMAL NEUTRONS; YIELDS