Increase of sensitivity of gamma-spectrometric determination of impurity europium radionuclides during production of gadolinium-153 preparation

A new method of processing of spectra of gamma-radiation with determination of 156Eu as a sum of recorded impulses in the range of 1610-2300 keV and following calculation of other europium radionuclides was proposed and was tested on real samples. The proposed method for samples of technological solution purified from europium was more sensitive than standard method (in 10 times approximately). This method can be used both in control of technological process of 153Gd preparation production, and in certification