New experiments performed at high power with radiation cooling on TEXTOR-94, upgraded for long pulses, have shown the following. (i) Improved confinement conditions at high density (for which the plasma is mainly thermal) lasting for several seconds up to the present maximum flat top time of the upgraded machine with a low and stationary central impurity content. Note that the radiation occurs near the plasma edge, mainly inside the last closed magnetic flux surface. (ii) The existence of confinement transitions during the radiatively cooled phase of the discharge: the already observed transitions from higher to lower confinement regimes have been confirmed but, remarkably, transitions from lower to higher confinement are now also present, leading to an improvement of the confinement time of up to a factor of three.
高功率下进行的、采用辐射冷却的TEXTOR-94（为长脉冲而升级）新实验显示了以下结果。(i) 在高密度条件下（此时等离子体主要为热等离子体），改善约束状态可持续数秒，直至该升级装置当前最大平顶时间，且中心杂质含量低且稳定。值得注意的是，辐射发生在等离子体边缘附近，主要位于最后一个闭合磁通面以内。(ii) 在放电的辐射冷却阶段存在约束转变：先前已观察到的从较高约束模式向较低约束模式的转变得到确认，但值得注意的是，现在也观察到了从较低约束模式向较高约束模式的转变，从而使约束时间提高了最多三倍。