Isomer transmutation in electron-assisted processes

For atomic-nuclear cooperative processes, such as NEET and NEEC, the cross sections could be deduced from successful experiments either directly, or through the linked theoretical estimates. Probability of isomer transmutation in electron-assisted mechanisms must contain both nuclear and atomic components. In the present work, the NEEC probability is estimated and the perspectives for this process detection within different experimental approaches are discussed. A new method is proposed to search for the isomer depletion by NEEC under stopping of the recoil nuclei in the gas absorber, and the experiment is quantitatively characterized for the cases of 242mAm and 93mMo isomers depletion. A nuclear excitation rate via NEET mechanism is also calculated and compared to known experimental results.