Transport of energetic electrons in a magnetically expanding helicon double layer plasma

Kazunori Takahashi, Christine Charles, Rod Boswell, Wes Cox, Rikizo Hatakeyama

Research output: Contribution to journalArticlepeer-review

56 Citations (Scopus)

Abstract

Peripheral magnetic field lines extending from the plasma source into the diffusion chamber are found to separate two regions of Maxwellian electron energy probability functions: the central, ion-beam containing region with an electron temperature of 5 eV, and region near the chamber walls with electrons at 3 eV. Along the peripheral field lines a bi-Maxwellian population with a hot tail at 9 eV is shown to both originate from electrons in the source traveling downstream across the double layer and correspond to a local maximum in ion and electron densities.

Original languageEnglish
Article number191503
JournalApplied Physics Letters
Volume94
Issue number19
DOIs
Publication statusPublished - 2009

ASJC Scopus subject areas

  • Physics and Astronomy (miscellaneous)

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