仪器工作原理图 neutral molecules, filament neutral fragments, and negative electron ions to vacuum pump beam magnet analyzer tube neutral molecules repeller plate negatively charged magnet positively charged ions accelerating (deflected according to m/z) and focusing plates ion exit slit collector 离子源、分离管收集器和记录系统 recorder A Figure 12.1 Schematic of a mass spectrometer.仪器工作原理图 离子源、分离管收集器和记录系统