GASPAN-ZKD, Ge(Li) Detector and Multichannel Analyser Gamma Spectra Unfolding

1 - Nature of the physical problem solved: Analysis of gamma-ray spectra obtained by a Ge(Li) detector and a multichannel pulse-height analyser to determine energy and intensity of gamma-lines. 2 - Method of solution: After smoothing the spectral data (approximation to a power function by least squares method) domains with significant negative second differences are determined which mark the position of the peaks. A Gaussian function plus a quadratic function is fitted to each peak. The program allows identifying unresolved multiple peaks. It is possible to fit simultaneously up to 5 peaks. 3 - Restrictions on the complexity of the problem: Limited to spectra with 4096 channels and 100 peaks