(19)
(11) EP 0 193 311 A3

(12) EUROPEAN PATENT APPLICATION

(88) Date of publication A3:
04.11.1987 Bulletin 1987/45

(43) Date of publication A2:
03.09.1986 Bulletin 1986/36

(21) Application number: 86300994

(22) Date of filing: 13.02.1986
(84) Designated Contracting States:
CH DE FR GB IT LI NL SE

(30) Priority: 22.02.1985 US 704651

(71) Applicant: FINNIGAN CORPORATION
 ()

(72) Inventors:
  • Amy, Jonathon W.
     ()
  • Kelley, Paul Edwin
     ()

   


(54) Ion detector


(57) An ion detector is disclosed herein and includes a conversion dynode for receiving at its input charged particles and for delivering at its output charged particles such that the latter particles leave the output of said dynode in a diffused manner and a microchannel electron multiplier disposed adjacent the conversion electrode to receive said diffused charged particles from the output of the conversion dynode and a collector electrode for receiving electrons exiting the microchannel plate. The ion detector also includes a resistive divider for providing voltages to said conversion dynode, across the microchannel plate and to said collector electrode.






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