Development of multidimensional Monte Carlo simulation code for H− ion and neutral transport in H− ion sources

• DOI: 10.1063/1.1430881
• Publication Date: 2002-07-26T13:26:45Z
• Authors: A. Hatayama; T. Sakurabayashi; Y. Ishi; K. Makino; M. Ogasawara; M. Bacal
• Keywords: 0103 physical sciences; 01 natural sciences

Two multidimensional Monte Carlo simulation codes—(a) neutral (H2,H) transport code and (b) negative ion (H−) code—have been developed. This article focuses on the recent results by for H− production in a large, hybrid source, “Camembert III.” Two-dimensional spatial profiles of vibrationally excited molecules H2(v) are obtained given background plasma profile. Both ions mainly produced near filaments driver region. However, source density has double peak its structure, while profile is characterized “mushroom” structure with single peak. These indicate large potential code, not only understanding underlying physics, but also designing sources, including complicating effects geometry, velocity distribution particles, atomic wall processes.