1959•OSTI OAI (U.S. Department of Energy Office of Scientific and Technical Information)Requires access
ON THE EFFECTIVENESS OF DELAYED NEUTRONS IN A REFLECTED REACTOR
D. Emendörfer, K. H. Höcker
Open publisher page 0 citations
Abstract
The delayed neutrons are produced with less kinetic energy than the flssion neutrons. They therefore get thermal inside the reactor with a higher probability than the prompt neutrons, i.e., their influence on the neutron multiplication is more important. The diffusion of prompt and delayed neutrons is treated in a group diffusion approximation. Dsriving a single space- and energy-independent kinetic equation from the system of multi-group equations by means of the importance function, an effective fraction of delayed neutrons appears, which is different from the ordinary fraction of delayed neutrons by 20%. (auth)