Influence of Ambient Gas on Laser-Induced Breakdown Spectroscopy of Uranium Metal

doi:10.1088/1009-0630/17/11/15

	Influence of Ambient Gas on Laser-Induced Breakdown Spectroscopy of Uranium Metal
	Zhu Xiaolong1 ; Wang Shulong 1,2; Ma Xinwen1 ; Zhang Decheng 1
刊名	PLASMA SCIENCE & TECHNOLOGY
	2015-11-01
卷号	17 页码:971-974
关键词	laser-induced breakdown spectroscopy uranium ambient gas
ISSN号	1009-0630
DOI	10.1088/1009-0630/17/11/15
英文摘要	Laser-induced breakdown spectroscopy (LIBS) is regarded as a suitable method for the remote analysis of materials in any phase, even in an environment with high radiation levels. In the present work we used the third harmonic pulse of a Nd:YAG laser for ablation of uranium metal and measured the plasma emission with a fiber-optic spectrometer. The LIBS spectra of uranium metal and their features in different ambient gases (i.e., argon, neon, oxygen, and nitrogen) at atmospheric pressure were studied. Strong continuum spectrum and several hundreds of emission lines from UI and UII were observed. It is found that the continuum spectrum observed in uranium not only comes from bremsstrahlung emission but is also due to the complex spectrum of uranium. The influence of ambient gas and the gas flow rate for ablation of uranium metal was investigated. The experimental results indicate that the intensity of the uranium lines was enhanced in argon and nitrogen. However, the intensity of uranium lines was decreased in oxygen due to the generation of UO and other oxides. The results also showed that the highest intensity of uranium lines were obtained in argon gas with a gas flow rate above 2.5 L/min. The enhanced mechanism in ambient gas and the influence of the gas flow rate were analyzed in this work.
资助项目	projects of instrument function development of Chinese Academy of Sciences
WOS关键词	SAMPLE ; PRESSURE ; ORE
WOS研究方向	Physics
语种	英语
出版者	IOP PUBLISHING LTD
WOS记录号	WOS:000367515100015
资助机构	projects of instrument function development of Chinese Academy of Sciences
内容类型	期刊论文
源URL	[http://119.78.100.186/handle/113462/41309]
专题	近代物理研究所_实验物理中心
通讯作者	Zhang Decheng
作者单位	1.Chinese Acad Sci, Inst Modern Phys, Lanzhou 730000, Peoples R China 2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
推荐引用方式 GB/T 7714	Zhu Xiaolong,Wang Shulong,Ma Xinwen,et al. Influence of Ambient Gas on Laser-Induced Breakdown Spectroscopy of Uranium Metal[J]. PLASMA SCIENCE & TECHNOLOGY,2015,17:971-974.
APA	Zhu Xiaolong,Wang Shulong,Ma Xinwen,&Zhang Decheng.(2015).Influence of Ambient Gas on Laser-Induced Breakdown Spectroscopy of Uranium Metal.PLASMA SCIENCE & TECHNOLOGY,17,971-974.
MLA	Zhu Xiaolong,et al."Influence of Ambient Gas on Laser-Induced Breakdown Spectroscopy of Uranium Metal".PLASMA SCIENCE & TECHNOLOGY 17(2015):971-974.