Numerical simulation study towards plasma detachment in the end cell of GAMMA 10/PDX by a coupled fluid‐neutral code. Issue 6 (23rd March 2018)

• Record Type: Journal Article
• Authors: Islam, M.S.; Nakashima, Y.; Tatsumi, R.; Hatayama, A.; Islam, M.M.; Iijima, T.
• Other Names: Marandet Y. guestEditor.; Ciraolo G. guestEditor.; Rosato J. guestEditor.; Serre E. guestEditor.
• Is Part Of: Contributions to plasma physics. Volume 58:Issue 6/7/8(2018)
• Page Start: 805
• Page End: 811
• Publication Date: 2018-03-23
• Subjects: fluid code -- GAMMA 10/PDX -- hydrogen‐neutral transport -- neutral code -- plasma detachment; Plasma (Ionized gases) -- Periodicals; Electronic journals; 530.44
• DOI: 10.1002/ctpp.201700122
• Languages: English
• ISSNs: 0863-1042

Abstract

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, T i on the target plate is significantly reduced. Hydrogen gas puffing strongly enhances the momentum losses near the target plate via the charge–exchange reaction.