In-situ measurement of surface modifications of tungsten exposed to pulsed high heat flux for divertor design in tokamak-type fusion nuclear reactors
In-situ measurement of surface modifications of tungsten exposed to pulsed high heat flux for divertor design in tokamak-type fusion nuclear reactors
复制标题
原位测量暴露于脉冲高热通量的钨表面改性，用于托卡马克型聚变核反应堆偏滤器设计
DOI：
10.1016/j.fusengdes.2020.112042
复制
发表时间：
2020
影响因子：
1.7
通讯作者：
Ueda Yoshio
中科院分区：
文献类型：
--
作者：
Matsuda Yuki;Yamashita Shohei;Miyamoto Yusei;Motoi Daichi;Okita Takafumi;Hoashi Eiji;Ibano Kenzo;Ueda Yoshio
钨 (W) 偏滤器暴露在由中断和 I 型边缘局部模式 (ELM) 引起的脉冲高热中。因此，研究W相变过程中的表面形貌具有重要意义。迄今为止，人们已经研究了类中断热负载下的钨熔化动力学，并尝试修改我们设备的光学系统，以了解更详细的表面行为。本文展示了两种测量方法；通过高速视频 (HSV) 相机对 W 表面改性进行原位观察，并通过立体摄影技术 (SPT) 对熔化的 W 表面进行 3 维 (3D) 测量。前者通过观察W表面改性并分析激光照射点中心的亮度来阐明W熔化的详细过程。证实了由于W的相变，热负荷中心区域的发光波动剧烈。在后者中，利用SPT获得了熔化过程中W表面形状的3D图像，结果表明，W表面在熔化过程中发生波动，并在凝固过程中逐渐聚集到中心。校准精度仍有待提高，但高热通量加载下的 W 表面行为的 3D 测量已成功建立。
A tungsten (W) divertor is exposed to pulsed high heat caused by disruptions and Type-I Edge Localized Modes (ELMs). Therefore, it is important to investigate surface morphology of W during phase change. Heretofore, W melting dynamics under disruption-like heat load has been researched and tried to modify the optical system of our apparatus for knowing more detailed surface behavior. In this paper, the two measurement methods are shown; the in-situ observation of the W surface modification by a High Speed Video (HSV) camera and 3-Dimensional (3D) measurement of melting W surface by stereoscopic photography technique (SPT). In the former, the detailed process of W melting was clarified by observing W surface modification and analyzing luminance at the center of laser-irradiated spot. It was confirmed that luminescence at the center area of heat load fluctuated violently due to the phase change of W. In the latter, 3D images of W surface shape during melting was obtained using SPT and the results indicated that the W surface fluctuated in melting and gathered to the center gradually in solidifying. The calibration accuracy was still scope for improvement but the 3D measurement of W surface behavior loaded by high heat flux was established successfully.
ASDEX 升级中 ELM 瞬时熔化钨的实验
DOI：
10.1088/1741-4326/aa9a05
发表时间：
2018
期刊：
影响因子：
--
作者：
K. Krieger;M. Balden;J. Coenen;F. Laggner;G. Matthews;D. Nille;V. Rohde;B. Sieglin;L. Giannone;B. Göths;A. Herrmann;P. de Marne;R. Pitts;S. Potzel;P. Vondracek
通讯作者：
P. Vondracek
IFMIF/EVEDA 锂测试环路中锂靶表面速度的测量
影响因子：
1.7
作者：
T. Kanemura;H. Kondo;T. Furukawa;Y. Hirakawa;E. Hoashi;S. Yoshihashi;H. Horiike;E. Wakai
通讯作者：
E. Wakai