Numerical analysis of the hydrogen atom density in a negative ion source

N. Takado, J. Hanatani, T. Mizuno, A. Hatayama, H. Tobari, M. Hanada, T. Inoue, M. Taniguchi, M. Dairaku, M. Kashiwagi, K. Watanabe, K. Sakamoto

Research output: Chapter in Book/Report/Conference proceedingConference contribution

6 Citations (Scopus)

Abstract

Production and transport processes of H0 atoms are numerically simulated to obtain the H0 atom density. A three-dimensional transport code using a Monte Carlo method has been applied to analyze the local density of H0 atoms in the large "JAEA 10 ampere negative ion source" under Cs-seeded condition. In this study, the production rate of H0 atoms through the dissociation process of H2 molecules is estimated from single probe characteristics of the Langmuir probe measurement. In the code, the energy relaxation process of H0 atoms is also taken into account. The results show that the existence of high-energy electrons and the energy relaxation process of H0 atoms affect the H0 atom density.

Original languageEnglish
Title of host publicationPRODUCTION AND NEUTRALIZATION OF NEGATIVE IONS AND BEAMS
Subtitle of host publication11th International Symposium on the Production and Neutralization of Negative Ions and Beams
Pages38-45
Number of pages8
DOIs
Publication statusPublished - 2007 Nov 27
EventPRODUCTION AND NEUTRALIZATION OF NEGATIVE IONS AND BEAMS: 11th International Symposium on the Production and Neutralization of Negative Ions and Beams - Santa Fe, NM, United States
Duration: 2006 Sep 132006 Sep 15

Publication series

NameAIP Conference Proceedings
Volume925
ISSN (Print)0094-243X
ISSN (Electronic)1551-7616

Other

OtherPRODUCTION AND NEUTRALIZATION OF NEGATIVE IONS AND BEAMS: 11th International Symposium on the Production and Neutralization of Negative Ions and Beams
CountryUnited States
CitySanta Fe, NM
Period06/9/1306/9/15

Keywords

  • Dissociation
  • Energy relaxation
  • Hydrogen atom
  • Negative ion

ASJC Scopus subject areas

  • Physics and Astronomy(all)

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