Ran Hai
Associate Professor Supervisor of Doctorate Candidates Supervisor of Master's Candidates
Gender:Male
Alma Mater:大连理工大学
Degree:Doctoral Degree
School/Department:物理学院
Discipline:Plasma physics
E-Mail:rhai@dlut.edu.cn
Hits:
Indexed by:Journal Papers
Date of Publication:2015-11-01
Journal:PLASMA SCIENCE & TECHNOLOGY
Included Journals:SCIE、EI、Scopus
Volume:17
Issue:11
Page Number:958-963
ISSN No.:1009-0630
Key Words:carbon cluster; plasma-facing component (PFC); laser ablation; TOF mass spectrometry; graphite
Abstract:In this work, a time-of-flight (TOF) mass spectrometer has been used to investigate the distribution of intermediate species and formation process of carbon clusters. The graphite sample was ablated by Nd:YAG laser (532 nm and 1064 nm). The results indicate that the maximum size distribution shifted towards small cluster ions as the laser fluence increased, which happened because of the fragmentation of larger clusters in the hot plume. The temporal evolution of ions was measured by varying the delay time of the ion extraction pulse with respect to the laser irradiation, which was used to provide distribution information of the species in the ablated plasma plume. When the laser fluence decreased, the yield of all of the clusters obviously dropped.
海然，副教授，博士生导师，国家重点研发计划-青年项目负责人，大连市高端人才，大连市青年科技之星。博士毕业于大连理工大学等离子体物理专业。2014-2016年公派美国加州大学伯克利分校-劳伦斯伯克利国家实验室进行博士联合培养。
主要从事等离子体诊断、等离子体与材料相互作用，和工业、环境领域先进激光光谱技术开发及应用研究。近年来，重点针对磁约束核聚变装置运行极端环境，发展了壁材料元素、结构、服役性能的激光光谱诊断新技术，实现了远程、在线、定量化分析的目标。在Optics express, Journal of Analytical Atomic Spectrometry, Spectrochimica Acta Part B:Atomic Spectroscopy等国外核心杂志发表SCI论文60余篇，一作一区封面论文3篇，已授权发明专利12项；承担国家及省部级科研项目4项，参与重大科研项目多项，是我校牵头的国家重大ITER专项的研究骨干成员。
