| 摘要 |
A mass spectrometer is disclosed comprising a cooling cell 4 for cooling ions so as to reduce their kinetic energy. The cooling cell 4 comprises: a chamber for receiving the ions or for generating the ions therein, wherein said chamber is formed from walls defining a substantially enclosed region; and a cooling jacket 16 surrounding said chamber, wherein said cooling jacket 16 is arranged and configured to contain a cooling fluid and so as to remove heat from one or more walls of the chamber. The mass spectrometer further comprises a mass analyser 6 for receiving ions from the cooling cell 4 after they have been cooled. The present invention reduced the kinetic energy of the ions prior to mass analysis and hence improves the resolution of the mass analyser 6. The mass analyser is preferably a time of flight mass analyser. |
