Plutonium nuclear material safeguards is essential to ensure that states do not divert
plutonium to clandestine nuclear weapons programs. Traditional safeguards methods rely …

When multiple neutrons are emitted in a fission event they are correlated in both energy and
their relative angle, which may impact the design of safeguards equipment and other …

The time-correlated pulse-height technique can distinguish multiplying (special nuclear
material) from non-multiplying sources. The technique relies upon the measurement of …

This report documents work performed by Idaho National Laboratory and the University of
Michigan in fiscal year (FY) 2012 to examine design parameters related to the use of fast …

In recent years, the threat of an extremist group obtaining and using a nuclear weapon has
moved to the forefront of nuclear security concerns. Fortunately, the production of special …

Alternative detection technologies are crucial to meeting demand for neutron detectors, for
the current production of He-3, which has been the classical neutron choice, is insufficient …

This document serves as both an FY2103 End-of-Year and End-of-Project report on efforts
that resulted in the design of a prototype fast neutron multiplicity counter leveraged upon the …

The number and complexity of nuclear facilities are increasing and new technologies are
needed to maintain successful domestic and international safeguards efforts. Specifically …

At nuclear facilities, domestically and internationally, most measurement systems used for
nuclear materials' control and accountability rely on He-3 detectors. Due to resource …

A set of In-Pile Sections (IPS) has been irradiated in the BR2 reactor at SCK• CEN in
Belgium during the 1970's and 1980's. The primary goal of the IPS was to replicate the …