NEUTRON RADIATIVE CAPTURE GAMMA SPECTRA STRUCTURE

Authors & Affiliations

Grudzevich O.T.
Institute of Atomic Energy, Obninsk, Russia

Abstract

The structure of gamma spectra observed in neutron capture reactions is described by modelling of discrete levels. The tendency of structure to decrease as neutron energy increases is reproduced in calculations. Modification of E1 strength functions according to observed maximum values at low transition energy is proposed and tested on gamma spectra. It is shown that E1 and M1 strengths have the same values at energy 2 MeV. The energy dependence of the E3-transition strength function is derived from experimental data.

Keywords
discrete levels, fine structure, radiative strength function, dipole transition, E3-transition

Article Text (PDF, Translated by IAEA)

References

UDC 539.172

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