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High-resolution study of the 113 Cd(n,γ γ) spectrum by statistical decay model with discrete levels and transitions

Belgya, T.; Szentmiklósi, L.; Massarczyk, R.; Schwengner, R.; Junghans, A. R.; Grosse, E.

Abstract

The gamma-ray spectrum and the decay scheme of 114 Cd obtained from a radiative neutron capture experiment on 113 Cd samples are modelled in the framework of extreme statistical model. The unfolding of the experimental spectrum with proper normalization yields a total capture cross section of 21640 b and an average gamma-ray multiplicity of 4.1. Using the extreme statistical model the development of the low energy decay scheme of 114 Cd is in progress. In the model the constant-temperature level density is used, where the temperature parameter was very sensitive to the shape of the modelled gamma-ray spectrum. Using this sensitivity T=0.64 MeV was obtained with the constraint of good description of low energy level density and the level density at the binding energy. This is in full agreement with our earlier publication. For the description of the continuum shape of the unfolded spectrum the inclusion of low energy enhancement for the photon strength function was an important new addition.

Keywords: neutron radiative capture; 113Cd(n; gamma); capture gamma-ray spectrum; photon strength function

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