Uses two capture fields which have identical three-dimensional form the mass spectrometry manner

摘要

(57) establishing the ion trap to improve magnetic field consisting replenishment field and any capture two magnetic fields with spatial shape of Abstract] same, to excite continuously selected trapped ions for detection by changing the magnetic field. Establishing (16) defined regions and edges (11) ring of the ion trap from the (12, 13) quadrupole electrodes three-dimensional magnetic fields, particularly with the quadrupole trapping field two, or both The excited continuously trapped ions by changing the (frequency of the RF component or and) the amplitude of the component (DC or and) RF trapping of magnetic field. In addition, the discharge unwanted ions to establish the trapping field capable of storing ions with a mass charge ratio of the selected range, with a mass charge ratio of the selected range in the second by being superimposed on the magnetic field supplementation field Suruga, the replenishment Jill magnetic field components the frequency of the frequency range with the exception of the notch bandwidth of the range. Furthermore, it is established by superimposing the second capture magnetic field spatial shape substantially the same magnetic field to capture the magnetic field then improved.