Conceptual design of a novel high-frame-rate fast-neutron radiography facility

摘要

Neutron radiography is a well-established technique. However, fast-neutron radiography is relatively new and unexplored, although several advantages are manifest. Here, a description is given of a concept of a high-frame-rate fast-neutron radiography instrument. Specific advantages for the instrument considered here are:.A high frame rate realised by the use of an intense pulsed neutron source created by an accelerator facilitating the investigation of dynamic processes..Neutron-energy selection by means of time-of-flight facilitating resonance energy contrast variation..Optional horizontal or vertical illumination of a sample by means of an adjustable neutron source position..Stereoscopy realised by two neutron source positions.Typical features and design considerations are discussed. The possibility is shown that these different techniques are combined in one optimally designed high-frame-rate fast-neutron radiography instrument. (C) 2004 Elsevier B.V. All rights reserved.