Radioactinide additions to the electronic gamma-ray spectrum catalogue

With the completion of a CD ROM version of the original R. L. HEATH's Gamma -ray Spectrum Catalogue, it became obvious that a number of radionuclides a re missing which are important to various fields of nuclear science and tec hnology. With a large amount of transuranic waste awaiting permanent dispos al across the Department of Energy (DOE) complex and the need for its assay in order to dispose of it, it was decided that the addition of the radioac tinides encountered in transuranic waste should be the first priority. In r esponse to this need, the spectra of U-233, U-235, U-238, Np-237, Pu-238, P u-239, Pu-240, Pu-241, Pu-242, Am-241 and Am-243 have been acquired with mo dem Ge detectors, and prepared for graphics presentation along with the par ent and progeny decay chains and decay schemes. The associated tables of ga mma -ray energies and emission probabilities have been downloaded from the Evaluated Nuclear Structure Data file ENSDF) database. This information is being incorporated into the Gamma-Ray Spectrometry Center Web Site at http. //id.inel.gov/gamma.