Modeling of electron temperature in H- ion source

Takatoshi Morishita, Masatada Ogasawara, Akiyoshi Hatayama

Research output: Contribution to journalArticlepeer-review

3 Citations (Scopus)


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.

Original languageEnglish
Pages (from-to)2809-2815
Number of pages7
JournalJapanese Journal of Applied Physics, Part 1: Regular Papers and Short Notes and Review Papers
Issue number5 A
Publication statusPublished - 2000 May 1


  • Electron temperature equation
  • Electron temperature scaling
  • Large ion source
  • Modeling
  • Negative ion source
  • Numerical simulation

ASJC Scopus subject areas

  • General Engineering
  • General Physics and Astronomy


Dive into the research topics of 'Modeling of electron temperature in H- ion source'. Together they form a unique fingerprint.

Cite this