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The Effect of Multiple-Enhanced Diffusion on the Joule Heating of a Cold Non-Neutral Plasma

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eScholarship - University of California
Keywords
  • Plasma Physics
  • Atomic Physics
  • Physics
  • Alpha
  • Antihydrogen
  • Diffusion
  • Multipole
  • Non-Neutral
  • Plasma
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Abstract

One proposed technique for trapping anti-atoms is to superimpose a Ioffe-Pritchard style magnetic-minimum neutral trap on a standard Penning trap used to trap the charged atomic constituents. Adding a magnetic multipole field in this way removes the azimuthal symmetry of the ideal Penning trap and introduces a new avenue for radial diffusion. Enhanced diffusion will lead to increased Joule heating of a non-neutral plasma, potentially adversely affecting the formation rate of anti-atoms and increasing the required trap depth. We present a model of this effect, along with an approach to minimizing it, with comparison to measurements from an intended anti-atom trap.

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