INVESTIGATIONS OF NEUTRON AND PHOTON SPECTRA LEAKING FROM IRON AND LEAD BARRIERS ON IRRADIATION THEIR 14 MeV NEUTRONS

Authors & Affiliations

Trykov L.A., Chernov V.A.
Institute of Physics and Power Engineering, Obninsk, Russia

Abstract

The 14 MeV neutron generator NGM-18 was used as neutron source. The spectra were measured by using stilben one-crystal spectrometer and Boner ball spectrometer. The sample thickness equal 10, 35, 50 sm for Fe and 16, 40 sm for Pb. Distance between neutron source and detector was 3 m or less. The systematic errors equal 20% for neutron energy less 0.2 MeV, 5-10% for neutron energy above 0.2 MeV and 15-20% for gamma-quants. The statistical errors and errors caused by monitor equal 3-5%. The data obtained are recommended for neutron data libraries verification.

Keywords
single-crystal spectrometer, multisphere spectrometer, gamma rays, verification libraries neutron constants, error, iron, lead

Article Text (PDF, in Russia)

References

UDC 539.172

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