Publications
Showing 11 results for Author: Richard L. L. Reed
Mar, 2026
Conference Paper
Examination of Moderator Intrusion into 30B UF6 Cylinder for Nuclear Criticality Safety
Mar, 2025
Journal
Distinguishing fissile uranium isotopes using an active well neutron coincidence counter
Proposed thorium-based nuclear fuel cycles are likely to require quantification and verification of 233U within nuclear material. Because of their similar fission cross sections, active neutron nondestructive assay (NDA)systems may respond similarly to 233U and 235U. Traditional safeguards equipment has been optimized for235Uand238U quantification associated with conventio…
Nov, 2023
Journal
Real-Time Inventory Change Detection for the Protactinium Decay Inventory of the Molten Salt Breeder Reactor
This work presents a novel monitoring method for detecting material loss from the decay inventory of the molten salt breeder reactor (MSBR) by monitoring for changes to the system dynamics using an isotopic ratio. The isotopic masses in the decay inventory of a MSBR were simulated under several material loss scenarios. In each case, the ratio of 231Pa to 233Pa served as a…
Nov, 2023
Conference Paper
Neutron Coincidence Measurements of Uranium-233 Oxide
Renewed international interest in thorium-fueled advanced reactors has challenged the safeguards community to address future proliferation concerns. Thorium-based technology presents many benefits but does not eliminate the proliferation risks associated with producing and processing fissile material. A byproduct of thorium-fueled reactors is uranium-233, which is classifi…