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:期刊论文
Date of Publication:2018-02-01
Journal:APPLIED SPECTROSCOPY
Included Journals:SCIE、EI、PubMed
Volume:72
Issue:2
Page Number:225-233
ISSN No.:0003-7028
Key Words:Laser-induced breakdown spectroscopy; LIBS; glow discharge; liquid jet; electron temperature; electron density
Abstract:In this work, emission signals of laser-induced breakdown (LIBS) plasma of a flowing liquid jet in the absence and presence of an air-supported glow discharge have been investigated. In combination with a needle-to-needle glow discharge, a Q-switched neodymium-doped yttrium aluminum garnet (Nd:YAG) laser (1064 nm, 5 ns) with power density similar to 10(10)W/cm(2) was used to generate a plasma from a liquid jet. Emission lines of Mg, Ca, Al, Li, Na, and K all showed significant enhancements in the presence of the glow discharge. Lower continuum background was also observed. Mechanisms of the line emission enhancement and continuum radiation reduction were discussed.
海然，副教授，博士生导师，国家重点研发项目负责人，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年9月至2016年10月公派赴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。
主要从事基于激光光谱技术托卡马克装置内壁状态原位诊断、等离子体与壁材料相互作用研究，同时，包括环境污染、工业样品中多元素成分的远程、实时、定量化激光光谱分析、有机物快速分类等研究工作。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30余篇，SCI-Q1分区封面论文3篇，已授权发明专利10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。
