摘要
基于前期的技术积累,结合科研开发了超低气压、共线双脉冲激光诱导击穿光谱实验平台。介绍了平台的设计思路、设备模块构成、实验过程优化等。通过对实验平台进行测试分析,结果表明,原子谱线信号随着真空度的增加明显减弱。在超低气压环境下,双脉冲之间的时间间隔存在一个最佳值,可以最大程度增强等离子体发射光谱强度,大大提高其灵敏度。
Based on the accumulation of technology and the research projects,an experimental platform of collinear double pulse laser induced breakdown spectroscopy at ultrahigh vacuum condition was developed.In this paper,the design idea,the equipment module,the mainly problems and the corresponding solutions were introduced.The experimental platform was tested,and the experiment results indicated that the signal of atomic spectral gets weaker as the increase of vacuum.Moreover,both the strength of the spectroscopy was enhanced effectively and the sensitiveness was heightened when the appropriate time interval between the two pulses was set in the ultra low pressure environment.
作者
王奇
海然
冯春雷
吴兴伟
丁洪斌
WANG Qi;HAI Ran;FENG Chun-lei;WU Xing-wei;DING Hong-bin(School of Physics;Key Laboratory of Materials Modification by Laser,Ion and Electron Beams of Ministry of Education,Dalian University of Technology,Dalian 116023,China)
出处
《实验室科学》
2018年第1期7-9,共3页
Laboratory Science
基金
国家自然科学基金青年基金(项目编号:11405022)
大连市高层次人才创新支持计划项目(项目编号:2016RQ020)
关键词
激光诱导击穿光谱(L1BS)
共线双脉冲
超低气压
laser induced breakdown spectroscopy
collinear double pulse
ultrahigh vacuum condition
