Abstract
This paper studies the transport of hydrogen neutral particles towards the upstream region in the end cell of GAMMA 10/PDX by developing a neutral transport code. As a first step, a series of initial test calculations have been performed by injecting hydrogen molecules from the target plate with fixed plasma background. It has been shown that neutral particles concentrate near the target plate and reduce towards the upstream region. After these initial test calculations, the dependence of hydrogen gas puffing on the plasma parameters has also been investigated. Hydrogen gas puffing leads to a strong reduction in the ion temperature near the target plate. For the strong gas puffing case, Ti on the target plate is significantly reduced. Hydrogen gas puffing strongly enhances the momentum losses near the target plate via the charge–exchange reaction.
| Original language | English |
|---|---|
| Pages (from-to) | 805-811 |
| Number of pages | 7 |
| Journal | Contributions to Plasma Physics |
| Volume | 58 |
| Issue number | 6-8 |
| DOIs | |
| State | Published - Jul 1 2018 |
Funding
This study was supported by the bidirectional collaboration research programme in the University of (NIFS12KUGM066, NIFS11KUGM050). The authors are the member of the GAMMA 10/PDX. 1Plasma Research Center, University of Tsukuba, Tsukuba, Japan 2Graduate School of Science and Technology, Keio University, Hiyoshi, Japan *Correspondence M.S. Islam, Plasma Research Center, University of Tsukuba, Tsukuba, Ibaraki 305-8577, Japan. Email: [email protected], [email protected] Funding Information This research was supported by the University of Tsukuba, NIFS11KUGM050, NIFS12KUGM066.
Keywords
- GAMMA 10/PDX
- fluid code
- hydrogen-neutral transport
- neutral code
- plasma detachment