Experimental Study of Photonuclear Reactions on Molybdenum Isotopes

In the present study, yields and cross sections of photonuclear reactions on a natural mixture of molybdenum isotopes were measured using the bremsstrahlung beam of a pulsed racetrack microtron with a maximum energy of 55 MeV (RTM-55). The experimental data were compared with theoretical calculations based on both the combined model of photonucleon reactions and the TALYS 2. 0 code with default parameters. It was shown that the values predicted by the combined model of photonucleon reactions exhibit better agreement with the experimental data, which indicates the necessity of accounting for isospin splitting of the giant dipole resonance, the quadrupole resonance, and the overtone of the giant dipole resonance for a correct description of photoproton reactions. An overestimation of the isospin component T< is observed in the calculations performed using the combined model of photonucleon reactions. In addition, in the present work, isomeric ratios for ^95m, g Nb and ^91m, g Mo were determined.