Abstract

Abstract A test of more than 50 nuclides of the fission-product file of the JEE-1 data library has been performed, using integral data measured in Dutch, French and US facilities. Some results are given for the capture cross sections of the 40 most important fission products in a fast reactor. The inelastic-seattering cross sections of many even-mass nuclides are systematically too low due to neglect of direct-collective effects. In lumped fission-product cross sections the uncertainties due to release of gasepus products have been reduced by means of a new burn-up model with parameters turned to leakage data of irradiated PHENIX fuel pins.

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