| 摘要 |
An ion trap is provided with at least two discrete trapping regions or segments. Both segments are located in a vacuum chamber of a mass spectrometer system. An entrance of the ion trap is disposed downstream to a laser based ionization source to receive the ions with a wide range of kinetic energies that have been generated by the laser-based ionization source. Once sufficient ions have been accumulated in the first segment and sufficient time has passed to cool the ions, they are transferred to the second segment and ultimately ejected through an aperture or slot to a detector arrangement to produce a mass spectrum.
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