Extension of operational regime in high-temperature plasmas and effect of ECRH on ion thermal transport in the LHD
Extension of operational regime in high-temperature plasmas and effect of ECRH on ion thermal transport in the LHD
复制标题
高温等离子体操作范围的扩展以及 ECRH 对 LHD 中离子热传输的影响
DOI：
10.1088/1741-4326/aa754b
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发表时间：
2017
期刊：
影响因子：
3.3
通讯作者：
Nakata M. et al
中科院分区：
文献类型：
--
作者：
Takahashi H.;Nagaoka K.;Murakami S.;Osakabe M.;Nakano H.;Ida K.;Tsujimura T. I.;Kubo S.;Kobayashi T.;Tanaka K.;Seki R.;Takeiri Y.;Yokoyama M.;Maeta S.;Nakata M. et al
由于 LHD 中优化的加热方案，同时的高离子温度 (T i) 和高电子温度 (T e) 范围得以成功扩展。这种高温等离子体是通过高功率NBI和ECRH的组合同时形成电子内部传输势垒（ITB）和离子ITB来实现的。虽然等离子体核心中的离子热约束随着轴上ECRH的T e/T i 的增加而降低，但发现等离子体边缘处的离子热约束得到改善。归一化离子热扩散率
A simultaneous high ion temperature (T i) and high electron temperature (T e) regime was successfully extended due to an optimized heating scenario in the LHD. Such high-temperature plasmas were realized by the simultaneous formation of an electron internal transport barrier (ITB) and an ion ITB by the combination of high power NBI and ECRH. Although the ion thermal confinement was degraded in the plasma core with an increase of T e/T i by the on-axis ECRH, it was found that the ion thermal confinement was improved at the plasma edge. The normalized ion thermal diffusivity