8-GROUP RELATIVE DELAYED NEUTRON YIELDS FOR EPITHERMAL NEUTRON INDUCED FISSION OF U-235 AND Pu-239

Authors & Affiliations

Piksaikin V.M., Kazakov L.E., Isaev S.G., Korolev G.G., Roshchenko V.A., Tertychnyj R.G.
State Scientific Centre - A.I. Leipunsky Institute for Physics and Power Engineering, Obninsk, Russia

Abstract

An 8-group representation of relative delayed neutron yields was obtained for epithermal neutron induced fission of 235U and 239Pu. These data were compared with ENDF/B-VI data in terms of the average half-life of the delayed neutron precursors and on the basis of the dependence of reactivity on the asymptotic period.

Keywords
epithermal neutron, delayed neutron, Pu-239, U-235, half-life, averaging group parameters, delayed neutron precursors

Article Text (PDF, Translated by IAEA)

References

UDC 539.173.84

Problems of Atomic Science and Technology. Series: Nuclear Constants", issue 1, 2001