月球氦-3资源的原位开采热释放行为研究

月球氦-3资源的原位利用不仅可以解决深空探测的能源供给问题，而且能够极大地减少深空探测的成本.选取钛铁矿作为月壤的代表矿物，建立了氦-3原子以空位和间隙两种缺陷赋存于钛铁矿中的分子动力学模型，阐述了不同温度下氦-3原子在钛铁矿中的扩散和释放行为.模拟计算结果表明:当氦-3在钛铁矿中扩散时，这些原子倾向于聚集成气泡.根据氦-3释放量随温度的增长率，整个加热释放的过程可以划分为两个阶段.月球氦-3资源原位开采的最优加热温度应在1000K以上，该温度下以不同形式赋存的氦-3均可以大量释放. 

Release Behavior Research of In-situ Helium-3 Resources Extraction in Moon under Heating

The In-situ Resource Utilization (ISRU) of Helium-3 in Moon can not only solve the energy problem, but also greatly reduce the cost of deep space exploration. In this paper, ilmenite is selected as the representative mineral of lunar soil. The molecular dynamics model of Helium-3 atoms trapped in ilmenite crystal in the ways of vacancies and interstitial sites was established. The diffusion and release of Helium-3 atoms at different temperatures were presented. Simulation results show that Helium-3 atoms would gather into bubbles when they diffused. Meanwhile, two obvious zones were identified according to the release amounts of Helium-3 in ilmenite with temperature, which are the first release zone and the second release zone. The optimal heating temperature for in-situ Helium-3 resources extraction in Moon should be above 1000K. A large number of Helium-3 atoms trapped in different forms can be released at the temperature. The research can provide theoretical basis for energy supply in Moon base.