Initial experimental test of a helicon plasma based mass filter

R. Gueroult, E. S. Evans, S. J. Zweben, N. J. Fisch, F. Levinton

Research output: Contribution to journalArticlepeer-review

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High throughput plasma mass separation requires rotation control in a high density multi-species plasmas. A preliminary mass separation device based on a helicon plasma operating in gas mixtures and featuring concentric biasable ring electrodes is introduced. Plasma profile shows strong response to electrode biasing. In light of floating potential measurements, the density response is interpreted as the consequence of a reshaping of the radial electric field in the plasma. This field can be made confining or de-confining depending on the imposed potential at the electrodes, in a way which is consistent with single particle orbit radial stability. Concurrent spatially resolved spectroscopic measurements suggest ion separation, with heavy to light ion emission line ratio increasing with radius when a specific potential gradient is applied to the electrodes.

Original languageEnglish (US)
Article number035024
JournalPlasma Sources Science and Technology
Issue number3
StatePublished - May 12 2016

All Science Journal Classification (ASJC) codes

  • Condensed Matter Physics


  • differential confinement
  • electrode biasing
  • helicon source
  • plasma mass filtering
  • plasma rotation


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