Abstract
An original method has been developed for the quantitative determination of copper by photoactivation analysis. The main advantage of this new method with respect to the conventional one is its high specificity. The method is based on the reaction63Cu(gamma, 2n)61Cu and on the detection of the 284 keV and/or 655 keV gammarays of61Cu(T=3.32 h). By a suitable choice of the irradiation and measuring conditions, a threshold sensitivity better than 10−3 can be achieved for copper determination, if a 25 MeV betatron is employed.
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