The ability to quickly quantify the Pu content within spent
nuclear fuel (SNF) is essential to nuclear forensics.
Analysis of the Pu PuU to U UPu ratio can provide information on
fuel and reactor history, including age, burnup and reactor
typewhich could contribute to the attribution of a fuel sample.
Plutonium concentration data can be acquired through
non-destructive analysis (NDA) by detecting self-induced x-ray
fluorescence (XRF) from Pu in the fuel. However, during
conventional spectroscopy, the characteristic Pu x-ray peak of
interest lies beneath background and requires an extended count
time. Crystal spectrometers allow x-rays of selected
energies, obeying Bragg's law for coherent scattering of incident
photons, to be focused directly onto a detector. This
provides a high signal with limited background by decreasing the
possible Compton interaction in the detector. The crystal
design and the experimental geometry that would allow for the study
of high energy x-rays required further attention. In
addition, a preliminary MCNP simulation of the energy-direction
coupled photon source from the quartz crystal was used to calculate
the improved signal-to-noise ratio of the Pu x-ray peak above
- A. Goodsell and W.S. Charlton,
"Optimization of a Quartz-Crystal Spectrometer Design for Analyzing K X-rays from Pu and U,"
53rd Annual Meeting of the Institute of Nuclear Materials Management, Orlando, Florida, 15-19 July 2012.
- A.V. Goodsell, W.S. Charlton,
"Quartz-Crystal Spectrometer for the Analysis of Plutonium K X-Rays,"
Proceedings of GLOBAL 2011, Makuhar, Japan, December 11-16, 2011. See Document
- A.V. Goodsell, W.S. Charlton. ,
"Bent-Crystal Spectrometer Analyzing Plutonium K X-Rays for Applications in Nuclear Forensics,"
Proceedings of the INMM 52nd Annual Meeting, Palm Desert, CA, July 17-21, 2011.