EXPERIMENTAL DETERMINATIONS OF AVERAGE BETA AND GAMMA ENERGIES AND THEIR USE FOR DECAY HEAT PREDICTIONSUniversity of Uppsala, Studsvik, S-611 82 Nyköping, Sweden O. Tengblad, B. Jonson, G. Nyman Chalmers University of Technology, S-412 96 Gothenburg, Sweden R. von Dincklage PSI, CH-5303 Würenlingen, Switzerland P. Hoff University of Oslo, Oslo 3, Norway Average beta energies have been determined for 112 fission products by direct beta measurements. A similar study of average gamma energies per decay is under way. The measured set of nuclides contributes the major part of the decay heat in nuclear fuel at short cooling times. KEYWORDS: Average beta and gamma energies, decay heat |