A study of the characteristics of proton-chain decay of the states of giant dipole resonance on Mg26, Ni58, and Ni60 nuclei is described. It is shown that the specific features of the results can be attributed to shell effects in the decay of analog states of the nuclei. Cross sections of photoneutron reaction on a number of nuclei of the ld-2s shell are also analyzed. It is shown that specific features of photoneutron cross sections in the region of light nuclei can also be interpreted within the framework of the concept of isospin splitting of giant dipole resonance.
Scientific-Research Institute of Nuclear Physics
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