Effect of vacuum chamber boronization on the plasma parameters in the L-2M stellarator
Effect of vacuum chamber boronization on the plasma parameters in the L-2M stellarator
复制标题
真空室渗硼对L-2M仿星器等离子体参数的影响
DOI：
10.1134/1.1947330
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发表时间：
2005
影响因子：
1.1
通讯作者：
V. Sharapov
中科院分区：
文献类型：
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作者：
A. Meshcheryakov;D. Akulina;G. Batanov;M. Berezhetskiĭ;G. Voronov;G. Gladkov;S. Grebenshchikov;V. A. Grinchuk;I. A. Grishina;L. Kolik;N. F. Larionova;A. Letunov;V. Logvinenko;A. Petrov;A. Pshenichnikov;G. A. Ryabenko;K. Sarksyan;N. Skvortsova;O. Fedyanin;N. Kharchev;Yu. V. Khol’nov;V. Sharapov
L-2M星光仪真空室渗硼后，欧姆和回旋共振加热等离子体的辐射损失减少了3-4倍。在此条件下，回旋共振区的辐射损失仅占输入微波功率的10-15%。已经发现了一些以前没有观察到的影响：分隔线附近电子温度梯度的显著增加，优先向外的径向湍流粒子通量(在整个放电阶段和从发射到发射)，以及更长的等离子体冷却阶段(增加了2-3倍)。
After boronization of the vacuum chamber of the L-2M stellarator, radiative losses from ohmically and ECR heated plasmas were reduced by a factor of 3–4. Under these conditions, radiative losses in the ECRH regime comprise only 10–15% of the input microwave power. Some effects have been detected that were not observed previously: a substantial increase in the gradient of the electron temperature near the separatrix, a preferentially outward-directed radial turbulent particle flux (both throughout the discharge phase and from shot to shot), and a longer (by a factor of 2–3) duration of the plasma cooling phase.