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US 4,731,538 AGranted
Microchannel plate ion detector
AssigneeGalileo Electro-Optics Corp.
InventorJohn W. Gray
Life of this patent
Estimating the term…
Abstract
An ion detector including a microchannel plate (MCP) with a hole through it provided along an undeflected trajectory of an ion beam, a faraday cup in position to receive ions passing through the hole, and a deflector to selectively deflect ions to multiplying channels of the MCP.
Claims10
An ion detector comprising
- a microchannel plate (MCP) made up of a plurality of microchannels for multiplying charged particles passing therethrough, said plate having a hole through it provided along an undeflected trajectory of an ion beam, said hole being substantially larger than said microchannels,
- a voltage source connectable to said MCP to achieve amplification of ions directed to said microchannels,
- a faraday cup in position to receive ions passing through said hole, and
- a deflector selectively deflect ions from said undeflected trajectory to multiplying channels of said MCP, said deflector comprising switch means connectable to selectively connect said voltage source to the input of said MCP.
1 more element
Dependencies are inferred from the claim text.