Detector for a co-axial bipolar time-of-flight mass...

Radiant energy – Ionic separation or analysis – Ion beam pulsing means with detector synchronizing means

Reexamination Certificate

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C250S2140VT, C250S207000, C250S397000, C313S1030CM, C313S1030CM

Reexamination Certificate

active

07141787

ABSTRACT:
A detector for a coaxial bipolar time-of-flight mass spectrometer is described. The detector includes a microchannel plate, a scintillator disposed in parallel relation to said microchannel plate, and a mirror oriented at an angle relative to said scintillator. The angle of the mirror is selected to reflect photons given off by the scintillator in a direction substantially orthogonal to the scintillator. The microchannel plate, the scintillator, and the mirror each have an opening formed centrally therein. The detector according to this aspect of the invention also includes a transparent tube extending through the central openings formed in each of the microchannel plate, the scintillator, and the mirror. A photomultiplier tube is coupled to the detector for receiving photons reflected by the mirror. A coaxial bipolar time-of-flight mass spectrometer incorporating the detector is also described.

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patent: 2004/0211896 (2004-10-01), Laprade et al.

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