High-density plasma production in converging field following a magnetic beach plasma source

Atsushi Okamoto; Ryosuke Ochiai; Katsuya Satou; Hiroki Hachikubo; Minami Sugimoto; Takaaki Fujita; Hiroyuki Takahashi

doi:10.1585/pfr.14.2401005

High-density plasma production in converging field following a magnetic beach plasma source

Atsushi Okamoto, Ryosuke Ochiai, Katsuya Satou, Hiroki Hachikubo, Minami Sugimoto, Takaaki Fujita, Hiroyuki Takahashi

ENG - Quantum Science and Energy Engineering

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

1 Citation (Scopus)

Abstract

A high ion saturation current (Iis) phase, which is characterized by larger increase/decrease of Iis compared with the magnetic field variation, is observed in a converging field following an electron cyclotron resonance plasma source with a magnetic beach configuration. Plasma production rate and particle influx are considered in terms of orbits of collisionless electrons. While the ionization probability of one-pass electron is order of 0.1, the mirror trapped electron cause ionization within several or dozen bouncing. This is an essence of improved ionization rate resulting in the high Iis phase. The temporal evolution of ion saturation current observed in the experiment is well explained by the estimated plasma production rate and particle influx.

Original language	English
Article number	2401005
Journal	Plasma and Fusion Research
Volume	14
Issue number	Specialissue1
DOIs	https://doi.org/10.1585/pfr.14.2401005
Publication status	Published - 2019

Keywords

Bounce motion
Converging magnetic field
Electron cyclotron resonance
High-density plasma
Magnetic beach configuration
Pitch angle

ASJC Scopus subject areas

Condensed Matter Physics

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10.1585/pfr.14.2401005

Cite this

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title = "High-density plasma production in converging field following a magnetic beach plasma source",

abstract = "A high ion saturation current (Iis) phase, which is characterized by larger increase/decrease of Iis compared with the magnetic field variation, is observed in a converging field following an electron cyclotron resonance plasma source with a magnetic beach configuration. Plasma production rate and particle influx are considered in terms of orbits of collisionless electrons. While the ionization probability of one-pass electron is order of 0.1, the mirror trapped electron cause ionization within several or dozen bouncing. This is an essence of improved ionization rate resulting in the high Iis phase. The temporal evolution of ion saturation current observed in the experiment is well explained by the estimated plasma production rate and particle influx.",

keywords = "Bounce motion, Converging magnetic field, Electron cyclotron resonance, High-density plasma, Magnetic beach configuration, Pitch angle",

author = "Atsushi Okamoto and Ryosuke Ochiai and Katsuya Satou and Hiroki Hachikubo and Minami Sugimoto and Takaaki Fujita and Hiroyuki Takahashi",

note = "Publisher Copyright: {\textcopyright} 2019 The Japan Society of Plasma Science and Nuclear Fusion Research.",

year = "2019",

doi = "10.1585/pfr.14.2401005",

language = "English",

volume = "14",

journal = "Plasma and Fusion Research",

issn = "1880-6821",

publisher = "The Japan Society of Plasma Science and Nuclear Fusion Research (JSPF)",

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TY - JOUR

T1 - High-density plasma production in converging field following a magnetic beach plasma source

AU - Okamoto, Atsushi

AU - Ochiai, Ryosuke

AU - Satou, Katsuya

AU - Hachikubo, Hiroki

AU - Sugimoto, Minami

AU - Fujita, Takaaki

AU - Takahashi, Hiroyuki

PY - 2019

Y1 - 2019

N2 - A high ion saturation current (Iis) phase, which is characterized by larger increase/decrease of Iis compared with the magnetic field variation, is observed in a converging field following an electron cyclotron resonance plasma source with a magnetic beach configuration. Plasma production rate and particle influx are considered in terms of orbits of collisionless electrons. While the ionization probability of one-pass electron is order of 0.1, the mirror trapped electron cause ionization within several or dozen bouncing. This is an essence of improved ionization rate resulting in the high Iis phase. The temporal evolution of ion saturation current observed in the experiment is well explained by the estimated plasma production rate and particle influx.

AB - A high ion saturation current (Iis) phase, which is characterized by larger increase/decrease of Iis compared with the magnetic field variation, is observed in a converging field following an electron cyclotron resonance plasma source with a magnetic beach configuration. Plasma production rate and particle influx are considered in terms of orbits of collisionless electrons. While the ionization probability of one-pass electron is order of 0.1, the mirror trapped electron cause ionization within several or dozen bouncing. This is an essence of improved ionization rate resulting in the high Iis phase. The temporal evolution of ion saturation current observed in the experiment is well explained by the estimated plasma production rate and particle influx.

KW - Bounce motion

KW - Converging magnetic field

KW - Electron cyclotron resonance

KW - High-density plasma

KW - Magnetic beach configuration

KW - Pitch angle

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M1 - 2401005

ER -

High-density plasma production in converging field following a magnetic beach plasma source

Abstract

Keywords

ASJC Scopus subject areas

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