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The sum-peak method was used to obtain the absolute activity value for the 60 Co, 65 Zn e 22 Na radioisotopes. Three HPGe detectors were used, being a planar, a coaxial and well type. The values of the activity obtained by sum-peak method are consistent, with values of uncertainty less 0.5% to for all radioisotopes considering k = 1. LNMRI has introduced a new Calibration System that uses a HPGE type well detector. Thus, a comparative study was made between the electronics available at the time of conception of the method and the one currently used.

journal of physics. conference series

ABSOLUTE STANDARDIZATION OF 22Na, 65Zn and 60Co BY SUM-PEAK METHOD AND CRITICAL ANALYSIS OF INSTRUMENTATION: Journal of Physics: Conference Series