Patent ID: 6020586
Filing Date: 2000-02-01
Classification: H01J

Abstract:
An apparatus for analyzing chemical species comprising:(a) a time-of-flight mass analyzer with ion pulsing region and detector,(b) an ion source configured external to said pulsing region of said time-of-flight mass analyzer for producing ions from said chemical species,(c) a multipole ion guide, said ion guide having an entrance end where said ions enter said ion guide from said ion source and an exit end where said ions exit said ion guide,(d) means to controllably trap ions in said ion guide and controllably release ions from said ion guide,(e) means to transfer said released ions into said pulsing region,(f) means for pulsing said ions transferred into said pulsing region into said time-of-flight mass analyzer for mass analysis, and(g) means for detecting said mass analyzed ions with said detector.