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Photon energy spectra as measured by the Canberra HPGe detector for A) background, B) F-18, C) Zr-89 and D) I-124.

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posted on 2014-09-09, 02:44 authored by Bradley J. Beattie, Keith S. Pentlow, Joseph O'Donoghue, John L. Humm

Insets show close-up of 511 keV annihilation photon peak upon which calibrations were based.