Multipole mass spectrometer and time of flight device,...

Details Multipole mass spectrometer and time of flight device,... Multipole mass spectrometer and time of flight device,...

H - Electricity

01

J

H01J 49/26 (2006.01)

Patent

CA 2299128

A method of operating a mass spectrometer and a mass spectrometer are provided. A first mass analysis stage, a fragmentation stage, an additional stage operable as a mass analysis stage, and a final mass analysis stage are connected and are operable either intermittently as a mass analyzer or continuously as a detector. The method comprises operating the apparatus in one of two modes, each comprising first selecting an ion with a predetermined mass to charge ratio and then causing fragmentation of that ion. The first mode includes: (1) passing the ion stream, including fragment ions, into the additional stage and operating the additional stage as a mass analyzer at a relatively low pressure to select ions having a desired mass-to-charge ratio; and (2) passing the ion stream into the final mass analysis stage and operating the final mass analysis stage as a detector to detect the total ion current received therein, whereby the ion current detected in the final mass analysis stage is maximized for the selected mass-to-charge ratio. The second mode includes: (a) passing the ion stream, including fragment ions into the additional mass analysis stage, and operating the additional mass analysis stage as an ion guide at a relatively high pressure to cool and focus the ions, whereby substantially all ions pass therethrough; and (b) operating the final mass analysis stage as a mass analyzer, to effect mass analysis of the ion stream received therein.

Affiliated with

Also associated with

Rating

Multipole mass spectrometer and time of flight device,... does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Multipole mass spectrometer and time of flight device,..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Multipole mass spectrometer and time of flight device,... will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFCA-PAI-O-1548829