A novel quadrupole, quistor, quadrupole tandem mass spectrometer

✍ Scribed by P. Kofel; H. Reinhard; U. P. Schlunegger

• Publisher: John Wiley and Sons
• Year: 1991
• Tongue: English
• Weight: 492 KB
• Volume: 26
• Category: Article
• ISSN: 1076-5174
• DOI: 10.1002/oms.1210260517

✦ Synopsis

A quadrupole, quistor, quadrupole tandem mass spectrometer allowing selected ion/selected molecule reactions was built. The quistor will be used as a reaction chamber for the study of organic ion-molecule reactions. Ions are generated in a differentially pumped ion source, quadrupole mass selected and injected into the quistor. The ions are trapped in the quistor by the combined action of a deceleration lens, the presence of helium buffer gas and the quistor RF field. As a first test of the performance of the instrument, the reaction rate constant of the reaction of 0;. with methane was measured to be 5 x lo-'' cm3 s -I . This is in good agreement with literature values, indicating that the ions are near thermal equilibrium after a few milliseconds of trapping time.