Measurement of a density profile of a hot-electron plasma in RT-1 with three-chord interferometry

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

doi:10.1063/1.4908550

Measurement of a density profile of a hot-electron plasma in RT-1 with three-chord interferometry

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

Research output: Contribution to journal › Article › peer-review

7 Citations (Scopus)

Abstract

The electron density profile of a plasma in a magnetospheric dipole field configuration was measured with a multi-chord interferometry including a relativistic correction. In order to improve the accuracy of density reconstruction, a 75 GHz interferometer was installed at a vertical chord of the Ring Trap 1 (RT-1) device in addition to previously installed ones at tangential and another vertical chords. The density profile was calculated by using the data of three-chord interferometry including relativistic effects for a plasma consisting of hot and cold electrons generated by electron cyclotron resonance heating (ECH). The results clearly showed the effects of density peaking and magnetic mirror trapping in a strongly inhomogeneous dipole magnetic field.

Original language	English
Article number	024503
Journal	Physics of Plasmas
Volume	22
Issue number	2
DOIs	https://doi.org/10.1063/1.4908550
Publication status	Published - 2015 Feb 1
Externally published	Yes

ASJC Scopus subject areas

Condensed Matter Physics

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title = "Measurement of a density profile of a hot-electron plasma in RT-1 with three-chord interferometry",

abstract = "The electron density profile of a plasma in a magnetospheric dipole field configuration was measured with a multi-chord interferometry including a relativistic correction. In order to improve the accuracy of density reconstruction, a 75 GHz interferometer was installed at a vertical chord of the Ring Trap 1 (RT-1) device in addition to previously installed ones at tangential and another vertical chords. The density profile was calculated by using the data of three-chord interferometry including relativistic effects for a plasma consisting of hot and cold electrons generated by electron cyclotron resonance heating (ECH). The results clearly showed the effects of density peaking and magnetic mirror trapping in a strongly inhomogeneous dipole magnetic field.",

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T1 - Measurement of a density profile of a hot-electron plasma in RT-1 with three-chord interferometry

AU - Saitoh, H.

AU - Yano, Y.

AU - Yoshida, Z.

AU - Nishiura, M.

AU - Morikawa, J.

AU - Kawazura, Y.

AU - Nogami, T.

AU - Yamasaki, M.

PY - 2015/2/1

Y1 - 2015/2/1

N2 - The electron density profile of a plasma in a magnetospheric dipole field configuration was measured with a multi-chord interferometry including a relativistic correction. In order to improve the accuracy of density reconstruction, a 75 GHz interferometer was installed at a vertical chord of the Ring Trap 1 (RT-1) device in addition to previously installed ones at tangential and another vertical chords. The density profile was calculated by using the data of three-chord interferometry including relativistic effects for a plasma consisting of hot and cold electrons generated by electron cyclotron resonance heating (ECH). The results clearly showed the effects of density peaking and magnetic mirror trapping in a strongly inhomogeneous dipole magnetic field.

AB - The electron density profile of a plasma in a magnetospheric dipole field configuration was measured with a multi-chord interferometry including a relativistic correction. In order to improve the accuracy of density reconstruction, a 75 GHz interferometer was installed at a vertical chord of the Ring Trap 1 (RT-1) device in addition to previously installed ones at tangential and another vertical chords. The density profile was calculated by using the data of three-chord interferometry including relativistic effects for a plasma consisting of hot and cold electrons generated by electron cyclotron resonance heating (ECH). The results clearly showed the effects of density peaking and magnetic mirror trapping in a strongly inhomogeneous dipole magnetic field.

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