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简要介绍了建立在清华大学的氦喷嘴激光离子源离线系统．并给出了在氦喷嘴出口处激光直接共振电离喷束中的钠原子的实验结果．此结果表明，在氦喷嘴出口处，用激光在束电离钠原子是可行的．由此出发可设计具有Ｚ选择性、效率高、可测同位素寿命下限低又能适用于高温难熔元素的激光离子源．
Briefly introduced the helium nozzle laser ion source offline system based on Tsinghua University. The experimental results of sodium atom in laser direct resonant ionization jet at the exit of helium nozzle are given. This result shows that it is feasible to ionize sodium atoms by laser beam at the helium nozzle exit. Starting from this design can have a Z-selective, high efficiency, measurable isotopes low life expectancy but also for high temperature refractory elements of the laser ion source.