UNFOLDING OF GAMMA-RAY SPECTRA BY STEPWISE STATISTICAL METHOD

摘要

The principle of the stepwise statistical method is applied to gamma-ray spectral analysis of an unknown mixture of many radionuclide’s. During the multiple regression procedure the F-level tests are given sequentially for entering and removing the nuclides from a set of library spectra. The unknown spectrum is unfolded when a best fit is obtained. The computer program for IBM 7040 has the capacity to resolve a mixture containing up to 99 nuclides. Various gain settings can be used for the multichannel analyzer, and the channel drift is corrected at each run by the standard sources. The flexibility of data gathering and the advantages of the stepwise principle make this method suitable for practical analysis of mixed gamma spectra.