THE MEASUREMENT OF γ-RAY MULTIPLICITY SPECTRA AND α-VALUE OF Pu-239 IN ENERGY RANGE 2-2150 eV

Authors & Affiliations

Grigor'ev Yu.V.1, Kitaev V.Ya.1, Moiseev K.V.1, Sinitsa V.V.1, Fajkov-Stanchik H.2, Hen Syn Ho2
2Institute of Physics and Power Engineering, Obninsk, Russia
2Joint Institute of Nuclear Research, Dubna, Russia

Abstract

Gamma-spectra from 1 to 12 multiplicity were measured on the 500 m and 122 m flight paths of the IBR-30 by means 16-section scintillation detector with a NaJ(Tl) crystals of a total volume of 36l and 16-section liquid scintillation detector of a total volume of 80 l for one metallic sample of diameter 80 mm and thickness 0.0011424 at/b with 99.9% plutonium-239. Spectra of multiplicity were obtained for resolved resonances in the energy region E=7-313 eV and in energy groups of the energy region E=2.15-2150 eV. They were used for determination of the value α=σγf in energy groups and for 80 resonances of Pu-239. Similar values were calculated from BROND-2, ENDF/B-6 and JENDL-3 evaluated data libraries with the help of the GRUCON computer program.

Keywords
spectrum with multiplicity coincidence gamma rays, resonance, the program GRUKON, libraries BROND-2, ENDF/B-6, JENDL-3

Article Text (PDF, in Russian)

References

UDC 621.039.51

Problems of Atomic Science and Technology. Series: Nuclear Constants", issue 2, 1997