HL-2A/2M上钨光谱的测量及实验研究

项目名称： HL-2A/2M上钨光谱的测量及实验研究

项目编号： No.11505051

项目类型： 青年科学基金项目

立项/批准年度： 2016

项目学科： 数理科学和化学

项目作者： 董春凤

作者单位： 核工业西南物理研究院

项目金额： 23万元

中文摘要： 钨金属具有熔化温度高、化学腐蚀和物理溅射低的特点，因而被选定为ITER装置运行中的唯一靶板材料。同时钨也是高Z材料，如果在等离子体中心发生累积现象，将导致等离子体放电破裂，严重影响装置安全和寿命。所以钨在聚变等离子体实验研究中具有十分重要的地位，是当前聚变研究的热点课题之一。在钨的相关实验研究中，钨光谱的测量和分析又首当其冲处于十分关键的基础研究位置。本项目拟利用激光吹气技术和钨金属模块等方法将金属钨引入等离子体中，利用具有高光谱分辨率的极紫外和真空紫外光谱仪进行探测。通过分析和识别钨光谱中的准连续谱、线辐射和禁戒跃迁谱线，对比分析钨光谱与等离子体温度的关系，开展钨光谱的识别和分析。结合现有的原子模型及原子分子数据，对实际测量的钨光谱进行模拟比对，对现有的原子模型和原子分子数据进行修正。

中文关键词： 钨光谱测量；孤立线辐射；极紫外光谱仪；光谱识别

英文摘要： Tungsten is designated to be the only material for ITER divertor plates due to high melting temperature, low chemical erosion and physical sputtering. The tungsten accumulation at plasma core, predicted by the neoclassical theory, will lead to the plasma disruption, which will have serious damage to the device. Therefore, study on tungsten in the magnetically confined fusion plasma field has an important and essential position, and becomes one of the hottest topics. In study related to tungsten experiment, the measurement and identification of tungsten spectra are the basic work of this research. The tungsten impurity is introduced into HL-2A plasma by the laser blow-off technique and tungsten module, and the spectra are measured by space-resolved extreme ultraviolet (EUV) spectrometer and vacuum ultraviolet (VUV) spectrometer with high spectral resolution. The work is done by analysis on the quasicontinuum, spectral line emission, forbidden transition and comparison the dependence of electron temperature. The measured spectra will compared with simulated results based on the present atomic model and atomic and molecule data, therefore, the modification of the present atomic mode and atomic and molecule data will be done.

英文关键词： tungsten spectra measurement;isolated line emission;extreme ultraviolet spectrometer;spectra identification