title: Standing Helicon Wave Induced by a Rapidly Bent Magnetic Field in Plasmas.
abstract: 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.
authors.affiliation: Department of Electrical Engineering, Tohoku University, Sendai 980-8579, Japan.
authors.forename: Kazunori
authors.initials: K
authors.lastname: Takahashi
authors.affiliation: Department of Electrical Engineering, Tohoku University, Sendai 980-8579, Japan.
authors.forename: Sho
authors.initials: S
authors.lastname: Takayama
authors.affiliation: Department of Electrical Engineering, Tohoku University, Sendai 980-8579, Japan.
authors.forename: Atsushi
authors.initials: A
authors.lastname: Komuro
authors.affiliation: Department of Electrical Engineering, Tohoku University, Sendai 980-8579, Japan.
authors.forename: Akira
authors.initials: A
authors.lastname: Ando