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Method and apparatus for controlling charged particles

  • US 4,826,646 A
  • Filed: 10/29/1985
  • Issued: 05/02/1989
  • Est. Priority Date: 10/29/1985
  • Status: Expired due to Term
First Claim
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1. A method of confining positively charged particles comprising the steps of:

  • (a) generating a magnetic field within a region wherein all the cusps of said magnetic field are point cusps;

    (b) injecting electrons within said region and using said generated magnetic field to confine electrons within said region and so to generate a negative potential well; and

    (c) injecting positively charged particles within said region and using said negative potential well to confine said positively charged particles within said region; and

    (d) maintaining the number of electrons greater than the number of positively charged particles;

    wherein said step (a) further comprises generating a surface cusp magnetic field having edge contours corresponding to a superposition of at least two truncated polyhedra.

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