NAA WITH THE IMPROVED RELATIVE METHOD AND THE INTERACTIVE COMPUTER-PROGRAM EPAA

The program EPAA has been written to perform neutron activation analys is calculations on a personal computer. It reads gamma-ray spectra fro m disk, calculates peak areas using interactive computer graphics, cor rects interferences, and calculates the concentrations of the elements chosen by the user with the improved relative standardization method. This method is suitable for use with reactors with reproducible neutr on fluxes. Calibrations are performed for all elements in standard cou nting geometries and are used for subsequent analyses over a long peri od of time.