Method and apparatus for detecting positively charged and...

Details Method and apparatus for detecting positively charged and... Method and apparatus for detecting positively charged and...

2006-08-28

2010-06-01

Wells, Nikita (Department: 2881)

Radiant energy

Inspection of solids or liquids by charged particles

Methods

C250S310000, C250S3960ML, C250S397000, C250S288000, C250S251000, C250S309000, C250S492210, C250S492300, C250S283000, C250S287000, C250S281000, C250S306000, C250S494100, C250S292000, C250S370090, C250S305000, C250S286000, C313S527000, C313S542000, C313S541000, C313S528000, C313S1030CM, C313S1050CM, C313S104000, C313S1030CM, C313S1050CM

Reexamination Certificate

active

07728292

ABSTRACT:
An ion detector includes collision surfaces for converting both positively and negatively charged ions into emitted secondary electrons. Secondary electrons may be detected using an electron detector, than may, for example include an electron multiplier. Conveniently, secondary electrons (or electrons emitted by the multiplier) may be detected using an electron pulse counter.

REFERENCES:
patent: 4423324 (1983-12-01), Stafford
patent: 4896035 (1990-01-01), Mahoney et al.
patent: 4988867 (1991-01-01), Laprade
patent: 10154483 (1998-06-01), None
Search Report for International Application No. PCT/CA2007/001493, filed Aug. 27, 2007.

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