Standing Helicon Wave Induced by a Rapidly Bent Magnetic Field in Plasmas

Kazunori Takahashi, Sho Takayama, Atsushi Komuro, Akira Ando

Research output: Contribution to journalArticlepeer-review

34 Citations (Scopus)


An electron energy probability function and a rf magnetic field are measured in a rf hydrogen helicon source, where axial and transverse static magnetic fields are applied to the source by solenoids and to the diffusion chamber by filter magnets, respectively. It is demonstrated that the helicon wave is reflected by the rapidly bent magnetic field and the resultant standing wave heats the electrons between the source and the magnetic filter, while the electron cooling effect by the magnetic filter is maintained. It is interpreted that the standing wave is generated by the presence of a spatially localized change of a refractive index.

Original languageEnglish
Article number135001
JournalPhysical Review Letters
Issue number13
Publication statusPublished - 2016 Mar 30


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