Modeling of neutrals and H- transport in a large negative ion source

N. Kameyama; D. Matsushita; S. Koga; R. Terasaki; A. Hatayama

doi:10.1063/1.3637373

Modeling of neutrals and H^- transport in a large negative ion source

N. Kameyama, D. Matsushita, S. Koga, R. Terasaki, A. Hatayama

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

1 Citation (Scopus)

Abstract

A systematic study of the extraction probability of surface-produced H ^- ions from the ion source has been done with H^- and neutral Monte-Carlo transport modeling. Without the effects of the flow velocity of background H⁺ ions and neutrals, the extraction probability (E.P.) depends strongly on the strength of the magnetic filter field B _MF for the low gas pressure condition. On the other hand, the E.P. does not depend so much on BMF for the high gas pressure condition. Neutral transport modeling shows that H₂ neutral possibly has a relatively high velocity (∼1km/s). The effect on the E.P., however, is not significant even for the high gas pressure regime.

Original language	English
Title of host publication	Second International Symposium on Negative Ions, Beams and Sources, NIBS2010
Pages	39-47
Number of pages	9
DOIs	https://doi.org/10.1063/1.3637373
Publication status	Published - 2011
Externally published	Yes
Event	2nd International Symposium on Negative Ions, Beams and Sources, NIBS2010 - Takayama City, Japan Duration: 2010 Nov 16 → 2010 Nov 19

Publication series

Name	AIP Conference Proceedings
Volume	1390
ISSN (Print)	0094-243X
ISSN (Electronic)	1551-7616

Other

Other	2nd International Symposium on Negative Ions, Beams and Sources, NIBS2010
Country/Territory	Japan
City	Takayama City
Period	10/11/16 → 10/11/19

Keywords

Extraction
Monte-Carlo method
Negative ions
Neutral flow velocity

ASJC Scopus subject areas

Physics and Astronomy(all)

Access to Document

10.1063/1.3637373

Cite this

Kameyama, N, Matsushita, D, Koga, S, Terasaki, R & Hatayama, A 2011, Modeling of neutrals and H^- transport in a large negative ion source. in Second International Symposium on Negative Ions, Beams and Sources, NIBS2010. AIP Conference Proceedings, vol. 1390, pp. 39-47, 2nd International Symposium on Negative Ions, Beams and Sources, NIBS2010, Takayama City, Japan, 10/11/16. https://doi.org/10.1063/1.3637373

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title = "Modeling of neutrals and H- transport in a large negative ion source",

abstract = "A systematic study of the extraction probability of surface-produced H - ions from the ion source has been done with H- and neutral Monte-Carlo transport modeling. Without the effects of the flow velocity of background H+ ions and neutrals, the extraction probability (E.P.) depends strongly on the strength of the magnetic filter field B MF for the low gas pressure condition. On the other hand, the E.P. does not depend so much on BMF for the high gas pressure condition. Neutral transport modeling shows that H2 neutral possibly has a relatively high velocity (∼1km/s). The effect on the E.P., however, is not significant even for the high gas pressure regime.",

keywords = "Extraction, Monte-Carlo method, Negative ions, Neutral flow velocity",

author = "N. Kameyama and D. Matsushita and S. Koga and R. Terasaki and A. Hatayama",

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AU - Kameyama, N.

AU - Matsushita, D.

AU - Koga, S.

AU - Terasaki, R.

AU - Hatayama, A.

PY - 2011

Y1 - 2011

N2 - A systematic study of the extraction probability of surface-produced H - ions from the ion source has been done with H- and neutral Monte-Carlo transport modeling. Without the effects of the flow velocity of background H+ ions and neutrals, the extraction probability (E.P.) depends strongly on the strength of the magnetic filter field B MF for the low gas pressure condition. On the other hand, the E.P. does not depend so much on BMF for the high gas pressure condition. Neutral transport modeling shows that H2 neutral possibly has a relatively high velocity (∼1km/s). The effect on the E.P., however, is not significant even for the high gas pressure regime.

AB - A systematic study of the extraction probability of surface-produced H - ions from the ion source has been done with H- and neutral Monte-Carlo transport modeling. Without the effects of the flow velocity of background H+ ions and neutrals, the extraction probability (E.P.) depends strongly on the strength of the magnetic filter field B MF for the low gas pressure condition. On the other hand, the E.P. does not depend so much on BMF for the high gas pressure condition. Neutral transport modeling shows that H2 neutral possibly has a relatively high velocity (∼1km/s). The effect on the E.P., however, is not significant even for the high gas pressure regime.

KW - Extraction

KW - Monte-Carlo method

KW - Negative ions

KW - Neutral flow velocity

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