Time of flight mass spectrometry apparatus

Details Time of flight mass spectrometry apparatus Time of flight mass spectrometry apparatus

2006-07-11

2006-07-11

Wells, Nikita (Department: 2881)

Radiant energy

Ionic separation or analysis

Ion beam pulsing means with detector synchronizing means

C250S281000, C250S283000, C250S3960ML

Reexamination Certificate

active

07075065

ABSTRACT:
Mass spectrometry apparatus105comprises a serial arrangement of an ion source110, first time of flight means, a field free region120, means to fragment the molecules, a second time of flight means and a large area detector160. The second time of flight means includes an ion mirror150, the ion mirror150being arranged to produce a reflecting substantially quadratic field. The first time of flight means is arranged to provide spatial focusing concomitant with time focusing of ions at or near the entrance to the ion mirror150. The means provided to fragment the ions front the first time of flight means can be a collision cell140or in the field free region220or in the first time of flight means. The means to fragment the molecules has a potential which is different from the potential at the entrance to the ion mirror150, and the detecting surface of the detector160is mounted in the time focal surface of the ion mirror150.

REFERENCES:
patent: 6674069 (2004-01-01), Martin et al.
patent: 6781122 (2004-08-01), Colburn et al.

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