Theoretical Study on Thermal Release of Helium-3 in Lunar Ilmenite

The in-situ utilization of lunar helium-3 resource is crucial to manned landings and base construction. Ilmenite was selected as the representative mineral which preserves most in soil. implantation ions into ilmenite simulated figure out concentration profile trapped ilmenite. Based on obtained profile, thermal release model for molecular dynamics established investigate diffusion optimal heating temperature, coefficient, rate were analyzed. time under actual conditions also studied using similitude analysis. results show that after ilmenite, it mainly vacancies interstitials crystal corresponding follows a Gaussian distribution. As temperature rises, cumulative amounts released increase rapidly at first then tend stabilize. about 1000 K amount 74%. coefficient activation energy with temperature. When higher than binding lattice, microscale. Furthermore, when increases, decreases. For K, 1 s. research could provide theoretical basis resources moon.