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Direct Fast-Neutron Detection: A Progress Report (open access)

Direct Fast-Neutron Detection: A Progress Report

It is widely acknowledged that Mure neutron-detection technologies will need to offer increased performance at lower cost. One clear route toward these goals is rapid and direct detection of fast neutrons prior to moderation. This report describes progress to date in an effort to achieve such neutron detection via proton recoil within plastic scintillator. Since recording proton-recoil events is of little practical use without a means to discriminate effectively against gamma-ray interactions, the present effort is concentrated on demonstrating a method that distinguishes between pulse types. The proposed method exploits the substantial difference in the speed of fission neutrons and gamma-ray photons. Should this effort ultimately prove successful, the resulting. technology would make a valuable contribution toward meeting the neutron-detection needs of the next century. This report describes the detailed investigations that have been part of Pacific Northwest National Laborato@s efforts to demonstrate direct fast-neutron detection in the laboratory. Our initial approach used a single, solid piece of scintillator along with the electronics needed for pulse-type differentiation. Work to date has led to the conclusion that faster scintillator and/or faster electronics will be necessary before satisfactory gamma-ray discrimination is achieved with this approach. Acquisition and testing of both faster scintillator …
Date: October 18, 1998
Creator: Peurrung, AJ; Stromswold, DC; Reeder, PL & Hansen, RR
System: The UNT Digital Library
Reactor sharing. Final report (open access)

Reactor sharing. Final report

Report on reactor sharing program at the University of Arizona.
Date: October 18, 1998
Creator: Williams, John G.
System: The UNT Digital Library