Accurate nuclear data provide an essential foundation for advances in a wide range of
fields, including nuclear energy, nuclear safety and security, safeguards, nuclear medicine …

The work presented in this paper focuses on the first 10 years (2011–2020) of radiation test
object (RTO) operations at the National Criticality Experiments Research Center. RTOs are …

Criticality experiments with 235U (metal and hydride) and 239Pu (metal) were performed
during the Manhattan Project. Results from these experiments provided necessary …

Nuclear criticality safety, nonproliferation and safeguards, emergency response, and
stockpile stewardship utilize estimates of the k eff multiplication factor. The value of k eff …

Criticality experiments with $^{235} $ U (metal and hydride) and $^{239} $ Pu (metal) were
performed during the Manhattan Project. Results from these experiments provided …

The Feynman-alpha method is a neutron noise technique that is used to estimate the prompt
neutron period of fissile assemblies. The method and quantity are of widespread interest …

This chapter presents a description of most of the instruments that are currently in use for the
measurement of plutonium and uranium using passive methods (without an external …

This chapter describes the principles involved with using neutron coincidences that obtain
more information about a measured sample than through singles counting alone. The …

The prompt neutron period (the negative reciprocal of the prompt neutron decay constant)
can be estimated using the Rossi-alpha technique that is predicated on fitting Rossi-alpha …

Aiming at measuring the prompt neutron decay constant α of fast critical assemblies, Rossi-α
method was improved by means of the acquisition of neutron and gamma time sequence …