基于LIBS的LID-QMS首壁燃料滞留诊断效率评价

IF 2.7 2区物理与天体物理 Q1 NUCLEAR SCIENCE & TECHNOLOGY

Nuclear Materials and Energy Pub Date : 2025-09-10 DOI:10.1016/j.nme.2025.101986

Yiqin Wang , Qingmei Xiao , Yang Liu , Shi Ye , Feng Li , Dongye Zhao

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引用次数: 0

摘要

在最小的材料影响下量化等离子体面组件（pfc）中的氘(D)保留对聚变反应堆运行至关重要。本研究采用激光诱导解吸结合四极杆质谱法（LID-QMS）对HL-3石墨瓦进行原位d保留分析。作为辅助策略，在优化的低通量条件下实施激光诱导击穿光谱（LIBS），以间歇评估LID-QMS在运行过程中的解吸效率。实验室实验表明，在第一个LID脉冲（激光通量>； 570mw /m2）中，80%的氘释放，通过交叉校准的QMS测量验证；LIBS通过将D/H光谱结果与qms分辨的H、HD和D2解吸信号相关联，提供快速的效率评估。集成的LID- qms - libs框架允许：在材料分析期间实时优化LID参数，直接效率验证而无需破坏性取样。该方法目前正在HL-3托卡马克上实施，用于原位wall-D监测，显示了在未来的聚变装置中取代非原位死后分析的潜力。

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Efficiency evaluation of fuel retention diagnostic in first wall by LID-QMS: Based on LIBS

Quantifying deuterium (D) retention in plasma-facing components (PFCs) with minimal material impact is critical for fusion reactor operation. This study employs laser-induced desorption coupled with quadrupole mass spectrometry (LID-QMS) for in situ D-retention analysis on HL-3 graphite tiles. As an auxiliary strategy, laser-induced breakdown spectroscopy (LIBS) is implemented under optimized low-fluence conditions to intermittently evaluate LID-QMS desorption efficiency during operation. Laboratory experiments demonstrate > 80 % deuterium release in the first LID pulse (laser fluence > 570 MW/m²), validated via cross-calibrated QMS measurements; LIBS provides rapid efficiency assessment by correlating D/H spectral results with QMS-resolved H, HD and D₂ desorption signals. The integrated LID-QMS-LIBS framework permits: real-time optimization of LID parameters during material analysis, direct efficiency validation without destructive sampling. This methodology is currently being implemented on HL-3 tokamak for in situ wall-D monitoring, demonstrating potential to replace ex situ post-mortem analysis in future fusion devices.

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来源期刊

Nuclear Materials and Energy Materials Science-Materials Science (miscellaneous)

CiteScore

3.70

自引率

15.40%

发文量

175

审稿时长

20 weeks

期刊介绍： The open-access journal Nuclear Materials and Energy is devoted to the growing field of research for material application in the production of nuclear energy. Nuclear Materials and Energy publishes original research articles of up to 6 pages in length.