| 摘要 |
An ion trap mass analyser (1) is disclosed comprising a segmented rod set. Ions are trapped radially within the mass analyser by a radial pseudo-potential well. The ions are also confined axially within a quadratic axial potential well. A supplemental AC voltage or potential is applied to the electrodes comprising the ion trap mass analyser (1) in order to excite parametrically ions within the ion trap (1).
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