Progress in modeling and numerical simulation of negative hydrogen ion sources (invited)

Akiyoshi Hatayama

Research output: Contribution to journalArticle

43 Citations (Scopus)

Abstract

Recent progress in numerical modeling of H- ion sources has been reviewed. The following two topics are mainly the focus: (1) the origin of the nonuniformity of H- production and H- beam in large H- sources and (2) extraction physics, especially the role of the "weak" transverse magnetic field on H- extraction. The present understanding of the origin of H- beam nonuniformity is reviewed and discussed with the results by a series of Monte Carlo transport modeling of electrons, neutrals, and H- ions. Also, the physical mechanism of the large enhancement of H- extraction due to the weak transverse magnetic field is discussed with the particle in cell modeling. In addition, some new results on the effect of surface H- production on the electric potential structure near the extraction aperture are presented and discussed.

Original languageEnglish
Article number02B901
JournalReview of Scientific Instruments
Volume79
Issue number2
DOIs
Publication statusPublished - 2008

Fingerprint

Ion sources
hydrogen ions
negative ions
ion sources
Hydrogen
Computer simulation
nonuniformity
simulation
Magnetic fields
magnetic fields
Physics
apertures
physics
Electrons
augmentation
Ions
Electric potential
electric potential
cells
ions

ASJC Scopus subject areas

  • Instrumentation
  • Physics and Astronomy (miscellaneous)

Cite this

Progress in modeling and numerical simulation of negative hydrogen ion sources (invited). / Hatayama, Akiyoshi.

In: Review of Scientific Instruments, Vol. 79, No. 2, 02B901, 2008.

Research output: Contribution to journalArticle

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