Investigation of Plutonium Abundance and Age Analysis

Based on spectra analysis software,all of the plutonium material peak counts are analyzed.Relatively efficiency calibration is done by the non-cou- pling peaks of ~(239)Pu.By using the known isotopes half life and yield,the cou- pling peaks counts are allocated by non-coupling peaks,consequently the atom ratios of each isotope are gotten.The formula between atom ratio and abun- dance or age is deduced by plutonium material isotopes decay characteristic. And so the abundance and age of plutonium material is gotten.After some re- peat measurements for a plutonium equipment are completed,a comparison be- tween our analysis results and PC-FRAM and the owner's reference results are done.

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