Investigation of the 128Te(n,γ)129Te reaction on thermal neutrons

The results of investigation of the 128Te(n, γ)129Te reaction on thermal neutrons are presented. About 50 gamma transitions with the Isub(γ)>=0.3% intensity are found and a partial decay scheme for 129Te levels at <=4 MeV excitation energy is given. The experimental values of partial transition cross sections in the given reaction are determined. The theoretical values of the partial cross sections calculated according to the Zane-Lynn model for the 5.2 Fm coherent scattering amplitude are in good agreement with the experimental data. As a quantitative measure of agreement between the experiment and theory the coefficients of linear correlation between the theoretical and experimental reaction cross sections, which is equal to rho=0.9986, are calculated. According to calculations using the Monte Carlo method the probability of determination of such a value of the rho coefficient or greater one within the framework of accidental fluctuations of the initial transition intensities is equal to 0.01%. The conclusion is made that the neutron capture mechanism passing through a compound nucleus plays a small role in the studied reaction