Anisotropy in broad component of H$\alpha$ line in the magnetospheric   device RT-1
  Temperature anisotropy in broad component of H$\alpha$ line was found in the ring trap 1 (RT-1) device by Doppler spectroscopy. Since hot hydrogen neutrals emitting a broad component are mainly produced by charge exchange between neutrals and protons, the anisotropy in the broad component is the evidence of proton temperature anisotropy generated by betatron acceleration. 
Yohei Kawazura, Noriki Takahashi, Zensho Yoshida, Masaki Nishiura,   Tomoaki Nogami, Ankur Kashyap, Yoshihisa Yano, Haruhiko...
physics.plasm-ph