Modeling of Electron Temperature in H^- Ion Source

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概要

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• The equation of electron temperature is included in a two point numerical code for a high power hydrogen negative ion source. The calculated results of the electron temperature are in good agreement with Japan Atomic Energy Research Institute(JAERI)'s experimental results. The scaling law of electron temperature is estimated as a function of input power and gas pressure. Energy input by arc discharge, energy loss by ionization, dissociation and loss on the wall are considered in the electron energy equation. The leak width on the wall at the cusp magnet is also calculated numerically. Energy loss on the wall is dominant, and is larger than the ionization loss. In a similarly enlarged JAERI's Kamaboko source, electron density increases and electron temperature decreases under a constant energy input per unit volume. In this situation, H^- extraction current increases despite the decrease in H^- density because of the enlargement of the H^- extraction area.

• 社団法人応用物理学会の論文
• 2000-05-15

著者

• Hatayama Akiyoshi

  Department Of Applied Physics And Physico-informatics Faculty Of Science And Technology Keio Univers

• Ogasawara Masatada

  Department Of Information Systems Teikyo-heisei University

• Ogasawara Masatada

  Department Of Information Systems Teikyo Heisei University

• MORISHITA Takatoshi

  Faculty of Science and Technology, Keio University

• Morishita Takatoshi

  Faculty Of Science And Technology Keio University

関連論文

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• Relaxation of Velocity Distribution of Ions in a Plasma
• Electron Taansport across Magnetic Filter in Negative Hydrogen Ion Source : Nuclear Sciences, Plasmas, and Electric Discharges
• Modeling of Electron Temperature in H^- Ion Source
• Collisional Damping of Plasma Oscillation
• Mechanism of Negative Ion Production in a Cesium Seeded Ion Source

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