Studies of aluminum erosion by neutral particles using quartz crystal microbalance and low energy neutral particle analyzer on EAST
Studies of aluminum erosion by neutral particles using quartz crystal microbalance and low energy neutral particle analyzer on EAST
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利用石英晶体微天平和EAST低能中性粒子分析仪研究中性粒子对铝的侵蚀
DOI：
10.1016/j.nme.2022.101248
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发表时间：
2022-09
影响因子：
2.6
通讯作者：
J.L. Chen
中科院分区：
文献类型：
--
作者：
L. Mu;N.X. Liu;R. Ding;R. Yan;J. Peng;Y. Zhang;H. Xie;B.F. Gao;B.G. Wang;B. Lyu;J.L. Chen
·在EAST上成功开发了LENPA和QMB系统，共同研究中性诱导材料侵蚀。通过两种实时和原位诊断方法同时测量了中性材料的腐蚀速率和中性能谱。·通过QMB的实验测量和LENPA的中性能谱理论计算，给出了EAST中11个长脉冲全放电的中性诱导Al烧蚀率，两者是一致的。·较高的密度和加热功率可以增加中性粒子的通量和能量，从而导致更强的中性诱导材料侵蚀。在放电期间的实时Li粉末喷射可以降低中性引起的材料侵蚀速率，这是由于较低的再循环和所导致的较低的中性通量。中性粒子引起的材料腐蚀是ITER和未来反应堆尚未解决的问题，它影响着第一壁材料的寿命和氚的留存率。最近在EAST H区赤道端口安装了低能中性粒子分析仪（LENPA）和石英晶体微天平（QMB），以研究中性粒子引起的材料侵蚀。QMB可以提供对壁材料的侵蚀过程的实时和原位测量，而LENPA给出的中性能谱可以帮助计算材料侵蚀速率，以与QMB结果进行比较。在2021年EAST夏季活动中，首次成功地使用两种可用的诊断方法研究了中性诱导的Al侵蚀。在一系列长脉冲放电中，QMB测量的平均Al侵蚀速率与使用LENPA数据的理论计算一致。此外，等离子体密度、加热功率和实时锂粉注入量的变化导致中性流和中性能量的不同，从而导致中性诱导材料侵蚀速率的变化。
• The LENPA and QMB systems were successfully developed on EAST to study the neutral-induced material erosion together. The neutral-induced material erosion rates and the neutral energy spectrum were measured simultaneously by the two real-time and in-situ diagnostics. • The neutral-induced Al erosion rates for the 11 long-pulse full discharges in EAST are given by experimental measurement from the QMB and the theoretical calculations according to the neutral energy spectrum from the LENPA, which are consistent with each other. • Higher density and heating power can increase the flux and energy of neutral particles, which results in stronger neutral-induced material erosion. The real-time Li powder injection during discharges can reduce the neutral-induced material erosion rate due to the lower recycling and the resulting lower neutral flux. The neutral-induced material erosion is still an unsolved issue for ITER and future reactors, which influences the lifetime of the first wall material and tritium retention rate. A low energy neutral particle analyzer (LENPA) and a quartz crystal microbalance (QMB) were recently installed together on the equatorial port of sector H in EAST to study neutral-induced material erosion. The QMB can provide real-time and in-situ measurements on the erosion process of the wall material, while the neutral energy spectrum given by LENPA can help to calculate the material erosion rate for comparison with QMB results. In the 2021 EAST summer campaign, neutral-induced Al erosion was successfully studied with the two available diagnostics for the first time. In a series of long-pulse discharges, the average Al erosion rates measured by the QMB are consistent with the theoretical calculations using the LENPA data. Furthermore, the changes in plasma density, heating power and the real-time lithium powder injection result in different neutral flux and energy, which lead to changes in the neutral-induced material erosion rates.
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DOI：
10.1016/j.sab.2016.10.017
发表时间：
2016-12
期刊：
Spectrochimica Acta Part B: Atomic Spectroscopy
影响因子：
--
作者：
N. Gierse;T. Schildt;H. Esser;G. Sergienko;S. Brezinsek;M. Freisinger;Dongye Zhao;H. Ding;A. Terra;U. Samm;C. Linsmeier
通讯作者：
N. Gierse;T. Schildt;H. Esser;G. Sergienko;S. Brezinsek;M. Freisinger;Dongye Zhao;H. Ding;A. Terra;U. Samm;C. Linsmeier
影响因子：
2.6
作者：
Lin Mu;R. Ding;N. Liu;Hai Xie;B. Gao;Junxiu Chen
通讯作者：
Lin Mu;R. Ding;N. Liu;Hai Xie;B. Gao;Junxiu Chen
影响因子：
3.3
作者：
A. Tabasso;H. Maier;K. Krieger;J. Roth
通讯作者：
A. Tabasso;H. Maier;K. Krieger;J. Roth
影响因子：
1.7
作者：
L. Marot;C. Linsmeier;B. Eren;L. Moser;R. Steiner;E. Meyer
通讯作者：
L. Marot;C. Linsmeier;B. Eren;L. Moser;R. Steiner;E. Meyer
影响因子：
3.1
作者：
S. Krat;Y. Gasparyan;A. Pisarev;I. Bykov;M. Mayer;G. D. S. Aubin;M. Balden;C. Lungu;A. Widdowson;J. Contributors
通讯作者：
S. Krat;Y. Gasparyan;A. Pisarev;I. Bykov;M. Mayer;G. D. S. Aubin;M. Balden;C. Lungu;A. Widdowson;J. Contributors