Transitionless Enhanced Confinement and the Role of Radial Electric Field Shear
Transitionless Enhanced Confinement and the Role of Radial Electric Field Shear
复制标题
无过渡增强约束和径向电场剪切的作用
DOI：
10.2172/14407
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发表时间：
1999
期刊：
影响因子：
--
通讯作者：
R. Budny
中科院分区：
文献类型：
--
作者：
B. Coppi;D. Ernst;M. Bell;R. Bell;R. Budny
证据表明，径向电场剪切的作用，在增强约束制度达到没有尖锐的分岔或过渡。在托卡马克聚变试验反应堆将氘球注入超射电浆后，在再热阶段产生的恒定密度温度扫描[j]Strachan等人，物理学。Rev. Lett. 58(1987) 1004]使用第一原理输运模型进行模拟。离子温度分布的缓慢再热，在此期间温度几乎翻倍，不能用相对全面的离子温度梯度驱动湍流（ITGDT）传输模型来解释，这主要取决于（不变的）电子密度梯度。一个扩展模型，包括自洽径向电场剪切对环形ITGDT的抑制，确实再现了再热阶段。
Evidence for the role of radial electric field shear in enhanced confinement regimes attained without sharp bifurcations or transitions is presented. Temperature scans at constant density, created in the reheat phase following deuterium pellet injection into supershot plasmas in the Tokamak Fusion Test Reactor [J.D. Strachan, et al., Phys. Rev. Lett. 58 (1987) 1004] are simulated using a first-principles transport model. The slow reheat of the ion temperature profile, during which the temperature nearly doubles, is not explained by relatively comprehensive models of transport due to Ion Temperature Gradient Driven Turbulence (ITGDT), which depends primarily on the (unchanging) electron density gradient. An extended model, including the suppression of toroidal ITGDT by self-consistent radial electric field shear, does reproduce the reheat phase.
影响因子：
3.3
作者：
A. Gibson;T. Sekiguchi;K. Lackner;S. Bodner;R. Hancox
通讯作者：
A. Gibson;T. Sekiguchi;K. Lackner;S. Bodner;R. Hancox