Fine analysis of the calibration curve for a HPGe spectrometer in gamma ray energy measurement

A computational method is suggested to analyze gamma ray peak position data of a series of closely shifted spectra of 192Ir measured by a HPGe spectrometer and an iteration program, Recovery-98 has been designed to find the fine curve of the spectrometer nonlinearity for energy calibration. The program is applied to check a previous experiment (measuring the gamma energies of 85Sr, etc.), and the revised result has been reported.