American Nuclear Society

Home / Store / Journals / Electronic Articles / Nuclear Technology / Volume 168 / Number 3

Delayed-Gamma Simulation Using MCNPX

Joe W. Durkee, Jr., Gregg W. McKinney, Holly R. Trellue, Laurie S. Waters, William B. Wilson

Nuclear Technology

Volume 168 / Number 3 / December 2009 / Pages 761-764


Member Price:$27.00
Member Savings:$3.00

Monitoring issues related to activation and fission processes occur in many health physics, instrumentation and equipment design, nuclear forensics, and homeland security applications. Gamma radiation that is emitted during these processes as a result of the radioactive decay of reaction by-products [delayed gammas (DGs)] provides unique signatures that are useful for interrogation and information acquisition. Thus, it is of compelling interest to have a simulation tool that can be used to conduct studies to provide insights into the activation and fission processes. Beginning with version 2.5.0, MCNPX has been undergoing major upgrades to facilitate DG simulations. We illustrate the upgrades for a simple multiparticle reaction model involving 60Ni and for 235U photofission caused by 12-MeV photons.

Questions or comments about the site? Contact the ANS Webmaster.