An analytical method and a computer code are described for unfolding complex gamma-ray spectra obtained with Ge(Li) detectors. The computer code will analyze 20 independent regions in a spectrum, with up to 350 data points and 11 full-energy lines in each region. Gaussian and exponential functions represent the data analytically. The best least-squares values of the energy, area, and width can be obtained for each full-energy peak. This report discusses the analytical techniques used and outlines the use of the code.
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