Study of Heat and Particle Flux in the Case of Gas Injection in the D-Module of GAMMA 10/PDX

This research investigated the radiation cooling mechanism and formation of detached plasma in the case of gas injection in the D-module of GAMMA 10/PDX. In GAMMA 10/PDX, divertor simulation experiments have been started by using a divertor simulation experimental module (D-module). A V-shaped targe...

Full description

Saved in:
Bibliographic Details
Published in:Plasma and Fusion Research 2016/04/22, Vol.11, pp.2402042-2402042
Main Authors: ISLAM, Md. Shahinul, NAKASHIMA, Yousuke, MATSUURA, Hiroto, ICHIMURA, Kazuya, ISLAM, Md. Maidul, SHIMIZU, Keita, FUKUI, Kazuma, OHUCHI, Masato, NOJIRI, Kunpei, TERAKADO, Akihiro, EZUMI, Naomichi, SAKAMOTO, Mizuki, IMAI, Tsuyoshi
Format: Article
Language:English
Subjects:
Cooling
D-module
Detached plasma
Detaching
Electron density (ne)
Electron temperature (Te)
GAMMA 10/PDX
Gas injection
Gases
Heat flux
Heat transfer
Ion flux
Ion saturation current (Ii-sat)
Plasma
Rare gases
Simulation
Tungsten
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:This research investigated the radiation cooling mechanism and formation of detached plasma in the case of gas injection in the D-module of GAMMA 10/PDX. In GAMMA 10/PDX, divertor simulation experiments have been started by using a divertor simulation experimental module (D-module). A V-shaped target made of tungsten has been installed in this module. In order to understand the effect of impurity injection into divertor simulation experimental module, we injected H2 and Ar gases to the D-module and measured the heat flux and ion flux. According to the increase of gas injection, reduction of ion and heat fluxes have been observed. In the Ar injection experiments, H2 gas has been injected simultaneously to examine the effect of molecular process on detached plasma formation. In this case, both the heat flux and ion flux are drastically reduced. These results indicate radiation cooling and formation of detached plasma due to gas injection. Simultaneous injection of noble gas and hydrogen gas showed the most effective results on detached plasma generation.
ISSN:1880-6821
1880-6821
DOI:10.1585/pfr.11.2402042