Methods relating to photonuclear detection are disclosed. A method of operating a photonuclear detection system may include transmitting photons toward a container for a duration of a first time period. The method may further include waiting for a duration of a second time period substantially equal to a detector recovery time of a radiation detector proximate the container. Additionally, the method may include measuring for induced delayed signatures for a duration of a third time period.
 The United States Government has certain rights in this invention pursuant to Contract No. DE-AC07-05-ID14517 between the United States Department of Energy and Battelle Energy Alliance, LLC.