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CHANNEL NUMBER
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Unprocessed gamma-ray spectrographs obtained with an 11-1/2 inch Na-1(T1l) crystal in a
shadow-shield type whole body counter.
The channel width was 20 Kev, Traces of 137cs and 60Co are
apparent in the background spectrum, The right hand scale was obtained by calibration with a standardman phantom, and requires correction for other body sizes; it is adjusted for the 137cg peak.
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