
Proceedings Paper
Improved plutonium identification and characterization results with NaI(Tl) detector using ASEDRAFormat | Member Price | Non-Member Price |
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Paper Abstract
The ASEDRA algorithm (Advanced Synthetically Enhanced Detector Resolution Algorithm) is a tool developed at the
University of Florida to synthetically enhance the resolved photopeaks derived from a characteristically poor resolution
spectra collected at room temperature from scintillator crystal-photomultiplier detector, such as a NaI(Tl) system. This
work reports on analysis of a side-by-side test comparing the identification capabilities of ASEDRA applied to a NaI(Tl)
detector with HPGe results for a Plutonium Beryllium (PuBe) source containing approximately 47 year old weapons-grade
plutonium (WGPu), a test case of real-world interest with a complex spectra including plutonium isotopes and
241Am decay products. The analysis included a comparison of photopeaks identified and photopeak energies between
the ASEDRA and HPGe detector systems, and the known energies of the plutonium isotopes. ASEDRA's performance
in peak area accuracy, also important in isotope identification as well as plutonium quality and age determination, was
evaluated for key energy lines by comparing the observed relative ratios of peak areas, adjusted for efficiency and
attenuation due to source shielding, to the predicted ratios from known energy line branching and source isotopics. The
results show that ASEDRA has identified over 20 lines also found by the HPGe and directly correlated to WGPu
energies.
Paper Details
Date Published: 4 April 2008
PDF: 11 pages
Proc. SPIE 6945, Optics and Photonics in Global Homeland Security IV, 694507 (4 April 2008); doi: 10.1117/12.777128
Published in SPIE Proceedings Vol. 6945:
Optics and Photonics in Global Homeland Security IV
Craig S. Halvorson; Daniel Lehrfeld; Theodore T. Saito, Editor(s)
PDF: 11 pages
Proc. SPIE 6945, Optics and Photonics in Global Homeland Security IV, 694507 (4 April 2008); doi: 10.1117/12.777128
Show Author Affiliations
J. Baciak, Univ. of Florida (United States)
E. LaVigne, Univ. of Florida (United States)
E. LaVigne, Univ. of Florida (United States)
Published in SPIE Proceedings Vol. 6945:
Optics and Photonics in Global Homeland Security IV
Craig S. Halvorson; Daniel Lehrfeld; Theodore T. Saito, Editor(s)
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