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Closed drift ion source

  • US 6,919,672 B2
  • Filed: 04/10/2003
  • Issued: 07/19/2005
  • Est. Priority Date: 04/10/2002
  • Status: Expired due to Fees
First Claim
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1. A closed drift ion source, comprising:

  • a channel having an open end and a closed end, wherein said channel includes an input port for an ionizable gas;

    a first magnetic pole disposed on said open end of said channel and extending therefrom in a first direction;

    a second magnetic pole disposed on said open end of said channel and extending therefrom in a second direction, wherein said first direction is opposite to said second direction;

    an anode disposed within said channel;

    a primary magnetic field line disposed between said first magnetic pole and said second magnetic pole, wherein said primary magnetic field line has a mirror field greater than 2.

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