End cap reflection for a time-of-flight mass spectrometer and me

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

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250282, B01D 5944, H01J 4900

Patent

active

058148132

ABSTRACT:
A reflectron for use with a mass spectrometer that focuses ions having different energies contains a conductive end cap that is electrically connected to a first voltage. A conductive surface is electrically isolated from the end cap and connected to a second voltage. This conductive surface cooperates with the conductive end cap to establish an inner region in which a non-linear electric field exists. As a result, ions having different energies enter and exit the inner region at a common opening and, when within the inner region, are reflected without penetrating past the conductive surface.

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