Bipolar ion detector

Radiant energy – With charged particle beam deflection or focussing – With detector

Reexamination Certificate

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Details

C250S281000, C250S299000, C250S287000

Reexamination Certificate

active

11132685

ABSTRACT:
The present invention is directed to a bipolar ion detector capable of detecting both positive and negative ions in a single configuration. The invention uses either a single microchannel plates or a stack of microchannel plates to convert the ion signal into an amplified electron signal. Circuitry allows the anode to be biased (floated) to a positive high voltage and efficiently couple the signal from the anode out to recording electronics at ground.

REFERENCES:
patent: 5326978 (1994-07-01), Aebi et al.
patent: 6492657 (2002-12-01), Burlefinger et al.
patent: 6828729 (2004-12-01), Owens et al.
patent: 6958474 (2005-10-01), Laprade et al.
“Microchannel Plates and Microchannel Plate Detectors,” Del Mar Ventures, San Diego, CA, www.sciner.com/MCP/MCP.htm, May 16, 2005.
“Time-of-Flight Detectors,” Burle Industries, Inc., www.burle.com/tofadvdet.htm, May 16, 2005.

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