| abstract |
The invention provides a method for designing a surface thermal ionization mass spectrometer, which includes: preliminary designing the structure of an ion lens system and performing three-dimensional modeling, simulating the ion focusing state of an ion beam generated from an ion source passing through the ion lens system, and judging whether the transmission effect is satisfactory If the design requirements are not met, modify the structural parameters and re-simulate. If they are met, determine the structure of the ion lens system; preliminarily design the structure of the ion optical system and conduct 3D modeling to simulate the ion lens system when the acceleration voltage is set. The ion beams of different masses coming out of the system enter the flight deflection trajectory of the ion photonic system, and judge whether the focusing effect meets the design requirements. If not, modify its structural parameters and re-simulate. If it does, determine the structure of the ion optical system; Carry out the design of ion receiver parameters. The invention provides a reliable theoretical basis for the design and development of the thermal ionization mass spectrometer. |