Title :
Exploring simultaneous single and coincident gamma-ray measurements for U/Pu assay in safeguards
Author :
Wang, T.F. ; Horne, S.M. ; Henderson, R.A. ; Roberts, K.E. ; Vogt, D.K.
Author_Institution :
Lawrence Livermore Nat. Lab., Livermore, CA, USA
Abstract :
Using a broad range of gamma-ray uranium standards and two plutonium samples of known isotopic content, list mode gamma ray information from two Compton suppressed and one planar HPGe detectors were analyzed according to the time information of the signals. Interferences from Cs-137 were introduced. In this study, we extended singles measurements by exploring the potential of simultaneously using both singles and coincidence data for U/Pu assay. The main goals of this exploratory study are: 1) whether one will be able to use coincidence information in addition to the complicated 100-keV unfolding to obtain extra information of uranium and plutonium isotopic ratios, and 2) with higher energy interference gamma-rays from isotopes such as Cs-137, can the coincidence information help to provide the isotopic information.
Keywords :
coincidence techniques; gamma-ray detection; germanium radiation detectors; nuclear materials safeguards; Compton suppressed detector; Cs-137; coincident gamma-ray measurement; gamma-ray uranium standards; interference; isotopic content; nuclear safeguards; planar HPGe detector; single gamma-ray measurement; Detectors; Interference; Isotopes; Laboratories; Logic gates; Standards; Weapons;
Conference_Titel :
Advancements in Nuclear Instrumentation Measurement Methods and their Applications (ANIMMA), 2011 2nd International Conference on
Conference_Location :
Ghent
Print_ISBN :
978-1-4577-0925-8
DOI :
10.1109/ANIMMA.2011.6172951
