【摘要】 通过离子轨迹模拟对用二阶空间聚焦条件设计的激光电离反射式串级飞行时间质谱仪的性能进行了研究 ,其中包括离子源在不同离子注入条件下的空间聚焦性能 ,有栅网和无栅网反射器的性能 ,栅丝效应 ,检测器平面位置以及质量门、光解点和后加速电极对性能的影响等。模拟结果对实际仪器的调试运行也提供了重要的参考依据更多还原

【Abstract】 Performance of the instrument,called Tandem Reflectron Time of flight mass spectrometer with laser ionization and designed with second order space focusing conditions,was studied through simulation of ion trajectory.The performance evaluation included quite a few issues,such as spatial focusing of ion beam incident under different conditions of ion sources,grid reflector or gridness reflector,effects of grid wire,possible influence of the detector orientation,mass gate,photo dissociation point and post acceleration etc.The simulation provides important information for adjusting and testing the apparatus.更多还原