@misc{oai:repo.qst.go.jp:00072216,
 author = {中嶋, 洋輔 and 市村, 和也 and S., Islam M. and 坂本, 瑞樹 and 江角, 直道 and 福井, 良磨 and 平田, 真史 and 市村, 真 and 池添, 竜也 and 今井, 剛 and M., Islam M. and 片沼, 伊佐夫 and 假家, 剛 and 小波蔵, 純子 and 南, 龍太郎 and 野尻, 訓平 and 沼倉, 友晴 and 大内, 理人 and 清水, 弘慈 and 寺門, 明紘 and 吉川, 正志 and Wang, X. and 朝倉, 伸幸 and 福本, 正勝 and 畑山, 明聖 and 廣岡, 慶彦 and 門, 信一郎 and 久保, 博孝 and 増崎, 貴 and 松浦, 寛人 and 仲野, 友英 and 永田, 晋二 and 西野, 信博 and 大野, 哲靖 and 相良, 明男 and 澤田, 圭司 and 庄司, 主 and 利根川, 昭 and 上田, 良夫 and 中嶋 洋輔 and 坂本 瑞樹 and 朝倉 伸幸 and 福本 正勝 and 久保 博孝 and 増崎 貴 and 仲野 友英 and 大野 哲靖 and 相良 明男 and 上田 良夫},
 month = {May},
 note = {This paper presents the detailed characteristics of the detached plasma produced in the GAMMA 10 PDX end-cell and especially focus on the comparison of the effects required for plasma detachment (such as radiation cooling) in various radiator gases (N2, Ne, Ar and Xe). GAMMA 10/PDX is the largest tandem mirror device in the world and high-power plasma heating systems are installed such as ion cyclotron range of frequency (ICRF) wave heating, electron cyclotron heating (ECH) and neutral beam injection (NBI) systems used in present-day fusion devices. By using these heating systems, high heat-flux generation and divertor simulation experiments under similar circumstances of actual fusion devices have been performed in the end-mirror region. So far the heat flux Pheat of ≥1 MW/m2 and the particle flux of 3.3e23 particles/s•m2 were achieved by using ICRF wave. Superimposing a short ECH pulse of ~400 kW into the ICRF-heated plasma attained the peak heat-flux value of more than 15 MW/m2 at the exit of west end-mirror.
\nRecently, divertor simulation experiments using a divertor simulation experimental module (D-module) were started in the west end-cell. D-module is equipped with tungsten target plates mounted in V-shape and gas injection systems for investigating radiation cooling mechanism in order to characterize the plasma detachment produced in D-module. Arrays of Langmuir probes and calorimeters are also mounted on the target plates and behind gap of the V-shaped corner to measure the plasma parameters in detached state.
\nIn detached plasma formation experiments from high temperature plasma (Ti ~150 eV, Te ~30 eV, ne ~1e18 m-3), effects of gas injection on the reduction of Te, the particle flux and the heating power onto the tungsten target were investigated. In cases of noble gases, it was found that Xe gas was most effective on electron cooling (down to 1~2 eV) and reduction of particle and heat fluxes (5~10%) and that Ne was less effective. On the other hand, N2 gas showed more favorable effects than Ar. Simultaneous injection of H2 and Xe drastically improved the performance for plasma detachment, which indicated the effect of molecular activated recombination (MAR) process. The results will be also discussed from the result of numerical simulation., 第22回制御核融合装置におけるプラズマ壁相互作用に関する国際会議},
 title = {Impact of gas injection on detached plasma formation in divertor simulation experiments using the GAMMA 10/PDX tandem mirror},
 year = {2016}
}