Study of beam optics and beam halo by integrated modeling of negative ion beams from plasma meniscus formation to beam acceleration

K. Miyamoto, S. Okuda, A. Hatayama, M. Hanada, A. Kojima

Research output: Contribution to journalArticle

18 Citations (Scopus)


To understand the physical mechanism of the beam halo formation in negative ion beams, a two-dimensional particle-in-cell code for simulating the trajectories of negative ions created via surface production has been developed. The simulation code reproduces a beam halo observed in an actual negative ion beam. The negative ions extracted from the periphery of the plasma meniscus (an electro-static lens in a source plasma) are over-focused in the extractor due to large curvature of the meniscus.

Original languageEnglish
Article number023512
JournalApplied Physics Letters
Issue number2
Publication statusPublished - 2013 Jan 14


ASJC Scopus subject areas

  • Physics and Astronomy (miscellaneous)

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