MASS SPECTROMETER

摘要

This mass spectrometer is provided with an ion permeation portion (37) having a multipolar rod electrode (1), a power source unit (5) for applying voltage to the multipolar rod electrode, and a control unit for controlling the power source unit, said mass spectrometer being characterised by the multipolar rod electrode having a rod electrode divided into a plurality of segment rods (2A-1, 2A-2, 2B-1, 2B-2, 2C-1, 2C-2, 2D-1, 2D-2) at mutually different positions in the axial direction. Thus enabled is low-cost, high-throughput analysis.