Assertion: absolute efficiency | /r/HasProperty | peak
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Source sentences:
text: In this paper the absolute efficiency, peak to valley ratio, and energy resolution of a NaI(Tl) detector were determined experimentally for 511, 662, 835, 1173, 1275, and 1332 keV photon energies obtained from 22Na, 54Mn, 60Co, and 137Cs radioactive sources.