The role of plasma-molecule interactions on power and particle balance during detachment on the TCV tokamak
The role of plasma-molecule interactions on power and particle balance during detachment on the TCV tokamak
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TCV 托卡马克分离过程中等离子体-分子相互作用对功率和粒子平衡的作用
DOI：
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发表时间：
2021
期刊：
影响因子：
--
通讯作者：
the Eurofusion MST1 Team
中科院分区：
文献类型：
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作者：
Kevin Verhaegh;B. Lipschultz;J. Harrison;B. Duval;A. Fil;M. Wensing;C. Bowman;D. Gahle;A. Kukushkin;D. Moulton;A. Perek;A. Pshenov;F. Federici;O. Février;O. Myatra;A. Smolders;C. Theiler;the TCV team;the Eurofusion MST1 Team
本文给出了TCV托卡马克的实验结果，表明如果达到较低的靶温度(<；3 eV)，包括D2+和可能的D−的等离子体-分子相互作用在偏滤器分离过程中作为能量汇(通过氢源辐射和解离)和粒子(离子)起着重要作用。分子激活复合(MAR)和由于功率限制效应导致的离子源减少都被证明是降低密度斜坡期间离子靶通量的重要因素。相比之下，电子-离子复合(EIR)离子汇太小，不能在降低离子靶通量方面发挥重要作用。由于目标温度不够低，在氮气晶种诱导的剥离过程中不会发生MAR或EIR。在目前的(振动未分辨的)SOLPS-ITER模拟中，D2+的影响被低估了，这可能是因为低估了D2+D+→D2++D速率。收敛的SOLPS-ITER模拟用不同的反应速率进行后处理，导致D2+对粒子和功率损失以及D2解离区以下的解离有相当大的贡献。这些发现与实验结果在数量上是一致的。
This paper shows experimental results from the TCV tokamak that indicate plasma-molecule interactions involving D2+ and possibly D− play an important role as sinks of energy (through hydrogenic radiation as well as dissociation) and particles (ions) during divertor detachment if low target temperatures (<3 eV) are achieved. Both molecular activated recombination (MAR) and ion source reduction due to a power limitation effect are shown to be important in reducing the ion target flux during a density ramp. In contrast, the electron–ion recombination (EIR) ion sink is too small to play an important role in reducing the ion target flux. MAR or EIR do not occur during N2 seeding induced detachment as the target temperatures are not sufficiently low. The impact of D2+ is shown to be underestimated in present (vibrationally unresolved) SOLPS-ITER simulations, which could result from an underestimated D2+D+→D2++D rate. The converged SOLPS-ITER simulations are post-processed with alternative reaction rates, resulting in considerable contributions of D2+ to particle and power losses as well as dissociation below the D2 dissociation area. Those findings are in quantitative agreement with the experimental results.
分离磁性拓扑和中性捕获在修改 TCV 分离阈值中的作用
影响因子：
2.2
作者：
Fil A
通讯作者：
Fil A
识别导致 TCV 分离时偏滤器目标离子电流下降的主要过程
影响因子：
1.6
作者：
Fil A
通讯作者：
Fil A
用于偏滤器等离子体特性二维推断的多重诊断贝叶斯分析的开发和模拟
影响因子：
2.2
作者：
Bowman C
通讯作者：
Bowman C