Abstract

Purpose. This paper presents the results of investigation of γ-ray yield enhancement from ^natCd(n,xγ) reactions obtained in experiments with 14-MeV neutrons in comparison with theoretical spectrum calculated in Empire code. 

Methods. The experiment was carried out applying TOF-technique for n-γ discrimination. The MCNP simulation of the experiment was performed and the influence of scattered neutrons background at gamma-ray spectrum shape was estimated. 

Results. It was shown that despite TOF-technique thermal neutrons capture by ¹¹³Cd isotope gives considerable contribution to gamma-spectrum induced in ^natCd sample by primary DT-neutrons. The thermal neutron flux was determined to be nearly constant at different locations of experimental hall. 

Conclusions. For the correct measurements of the γ-production cross sections for cadmium samples the sufficient separation between primary neutrons and scattered ones must be provided

Keywords: thermal neutrons, DT-neutrons, cadmium, gamma-spectrum, gamma-ray yield

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