Observation of a new high- β and high-density state of a magnetospheric plasma in RT-1

H. Saitoh, Y. Yano, Z. Yoshida, M. Nishiura, J. Morikawa, Y. Kawazura, T. Nogami, M. Yamasaki

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8 Citations (Scopus)

Abstract

A new high-β and high-density state is reported for a plasma confined in a laboratory magnetosphere. In order to expand the parameter regime of an electron cyclotron resonance heating experiment, the 8.2 GHz microwave power of the Ring Trap 1 device has been upgraded with the installation of a new waveguide system. The rated input power launched from a klystron was increased from 25 to 50 kW, which enabled the more stable formation of a hot-electron high-β plasma. The diamagnetic signal (the averaged value of four magnetic loops signals) of a plasma reached 5.2 mWb. According to a two-dimensional Grad-Shafranov analysis, the corresponding local β value is close to 100%.

Original languageEnglish
Article number082511
JournalPhysics of Plasmas
Volume21
Issue number8
DOIs
Publication statusPublished - 2014 Aug
Externally publishedYes

ASJC Scopus subject areas

  • Condensed Matter Physics

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    Saitoh, H., Yano, Y., Yoshida, Z., Nishiura, M., Morikawa, J., Kawazura, Y., Nogami, T., & Yamasaki, M. (2014). Observation of a new high- β and high-density state of a magnetospheric plasma in RT-1. Physics of Plasmas, 21(8), [082511]. https://doi.org/10.1063/1.4893137