STUDY OF DELAYED NEUTRON DECAY CURVES FOR U-235 AND Pu-239 FISSION DUE TO THERMAL NEUTRONS

Authors & Affiliations

Borzakov S.B., Zamyatnin Yu.S., Panteleev C., Pavlov S.S., Ruskov I.
Joint Institute of Nuclear Research, Dubna, Russia

Abstract

Experimental data and an analysis of delayed neutron decay curves in the time range 5-730 ms following irradiation of 235U and 239Pu are presented. The statistical accuracy is 0.3-0.4% for a time channel of 1 ms. Experimental data were compared with 6- and 8-group calculated data. The 7-group constant sets were proposed as most suitable for the description of the experimental curves.

Keywords
delayed neutrons, decay constant, cumulative yield, the probability of neutron emission, decay curves

Article Text (PDF, in English, Translated by IAEA)

References

UDC 539.173.84

Problems of Atomic Science and Technology. Series: Nuclear Constants", issue 2, 1999