Achievement of high fusion performance in JT-60U reversed shear discharges
Achievement of high fusion performance in JT-60U reversed shear discharges
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DOI：
10.1103/physrevlett.79.3917
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发表时间：
1997-11-17
影响因子：
8.6
通讯作者：
Yoshino, R
中科院分区：
文献类型：
--
作者：
Ishida, S;Fujita, T;Yoshino, R
在JT-60U托卡马克中，当等离子体电流高达2.8 MA时，具有l模式边缘的反向剪切放电的聚变性能得到了显著改善。由于离子和电子在靠近反向剪切区边界的r/a近似于0.7的小半径处形成了持续的内部输运垒，核心等离子体的能量被有效地限制了。在假定的氘-氚燃料中，为瞬态条件定义的涉及dW/dt项的峰值聚变放大因子将超过1。
Fusion performance of reversed shear discharges with an L-mode edge has been significantly improved in a thermonuclear dominant regime with up to 2.8 MA of plasma current in the JT-60U tokamak. The core plasma energy is efficiently confined due to the existence of persistent internal transport barriers formed for both ions and electrons at a large minor radius of r/a similar to 0.7 near the boundary of the reversed shear region. In an assumed deuterium-tritium fuel, the peak fusion amplification factor defined for transient conditions involving the dW/dt term would be in excess of unity.