Designing Atomic Resonance Conditions for 93mMo Isomer Depletion Via Nuclear Excitation by Electron Capture in a Beam-based Scenario for Selected Targets

摘要

We present theoretical research on the optimal atomic resonance conditions for long-lived (T1∕2 ～ 6.85 h) 93mMo isomer depletion via nuclear excitation by electron capture (NEEC) in a beam-based scenario. Analysis of potentially possible NEEC-resonance kinetic energy and predictions of the mean equilibrium charge state for the 93mMo recoil ion as a function of its kinetic energy in the He, C, Mg, and Al stopping media have been performed. We have found for the solid targets the high probability of observing the NEEC process for electron capture into M subshells for q = +33 charge state, and also significant probability for electron capture into N subshells for q = +34. Moreover, we have concluded that, for the studied solid targets, the occurrence of NEEC seems to be more probable than for a He gas target. The results of our study should be an important step toward the controlled release of energy stored in the nuclear isomer of some elements and may also be useful in the development of a new class of nuclear energy sources.