Mass spectrometer of a quadrupole electrode type comprising a divided electrode

摘要

In a mass spectrometer, a quadrupole electrode comprises four electrodes arranged at a predetermined interval about a device axis along which the mass spectrometer successively comprises an ionized gas source, the quadrupole electrode, and a detector for detecting the gas particles separated in reference to mass-to-charge ratio. At least one of the electrodes comprises a plurality of electrode elements which are divided along the device axis. Each of the electrode elements has a longitudinal axis. The electrode elements are mechanically connected by a mechanically connecting member so that the longitudinal axis are coincident with one another and parallel to the device axis. The electrode elements are electrically connected by an electrically connecting member.