DETERMINATION OF NEUTRON RESONANCE PARAMETERS OF Sm-149 IN ENERGY RANGE 15-300 eV

Authors & Affiliations

Georgiev G.P.1, Zamyatnin Yu.S.1, Pikel'ner L.B.1, Fajkov-Stanchik H.1, Grigor'ev Yu.V.2, Muradyan G.V.3, Yaneva N.V.4
1Joint Institute of Nuclear Research, Dubna, Russia
2Institute of Physics and Power Engineering, Obninsk, Russia
3Russian Scientific Center “Kurchatov’s Institute”, Moscow, Russia
4Institute of Nuclear Research and Nuclear Energy, Sofia, Bulgaria

Abstract

The neutron radiative capture measurements for enriched isotope Sm are performed at the neutron spectrometer of LNPh JINR by a gamma-rays multiplicity method using the multisectional 4p-detector “Romashka” placed on the 500 m flight path of the IBR-30 booster. The gamma-multiplicity spectra of resolved resonances were obtained in the energy range from 15 eV to 300 eV. The mean gamma-rays multiplicity was determined the energy, the average multiplicity, the spin and the radiative width for 91 resonances.

Keywords
enriched isotope Sm, neutron spectrometer of LNPh JINR, multisectional 4p-detector “Romashka”, the gamma-multiplicity spectra of resolved resonances

Article Text (PDF, in Russian)

References

UDC 621.039.51

Problems of Atomic Science and Technology. Series: Nuclear Constants", issue 1, 1999