Abstract
The classical spectrum unfolding method has been successfully used in simultaneous standardizations of radionuclide mixtures carried out in liquid-scintillition spectrometers with logarithmic pulse-height spectra outputs. However, this method is not applicable to linear spectra. The reason for this inapplicability is essentially the very important spectral shape difference between the logarithmic and the linear spectra. This article introduces a new linear spectrum unfolding method, and studies in detail the diverse aspects that must be modified on the classical method. Mixtures of 14C+ 3H, 45Ca+ 35S and 204Tl+ 36Cl, with different activity ratios have been used to test this new linear spectrum unfolding method.
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