Measurements of fast confined alphas on TFTR.
Measurements of fast confined alphas on TFTR.
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TTR 上快速受限 alpha 的测量。
DOI：
10.1103/physrevlett.75.846
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发表时间：
1995
影响因子：
8.6
通讯作者：
Olson
中科院分区：
文献类型：
--
作者：
Fisher;McChesney;Parks;Duong;Medley;Roquemore;Mansfield;Budny;Petrov;Olson
这封信报告了聚变等离子体中快速受限$\ensuremath{\alpha}$粒子能量分布的首次测量。颗粒电荷交换技术表明，托卡马克聚变测试反应堆核心中的聚变产生的 $\ensuremath{\alpha}$ 等离子体经典地减慢，并且似乎受到很好的限制。初步迹象表明，随机波纹效应导致等离子体核心外部的能量分布变陡$(r/a\ensuremath{\gtrsim}0.35)$。在后束加热等离子体衰变期间的数据中建议使用快速 $\ensuremath{\alpha}$ 的锯齿混合。
This Letter reports the first measurements of the fast confined $\ensuremath{\alpha}$-particle energy distribution in a fusion plasma. The pellet charge exchange technique shows the fusion generated $\ensuremath{\alpha}$'s in the core of the Tokamak Fusion Test Reactor plasma slow down classically, and appear to be well confined. Preliminary indications are that stochastic ripple effects are responsible for steepening the energy distribution outside the plasma core $(r/a\ensuremath{\gtrsim}0.35)$. Sawteeth mixing of fast $\ensuremath{\alpha}$'s is suggested in data during the post-beam-heating plasma decay.