A Fundamental Study of Laser-Induced Breakdown Spectroscopy Using Fiber Optics for Remote Measurements Of Trace Metals

Goode, Scott ; Angel, S. Michael

University of South Carolina (United States)

关键词: 37 Inorganic, Organic, Physical And Analytical Chemistry;    Microanalysis;    Laser Spectroscopy;    Excitation;    Ablation;   

DOI  :  10.2172/820946
RP-ID  :  DOE/ER/62305
RP-ID  :  FG07-96ER62305
RP-ID  :  820946

美国|英语

来源: UNT Digital Library

【 摘 要 】

Develop a fiber-optic imaging probe for microanalysis of solid samples; Design a time-resolved plasma imaging system to measure the development of the LIBS signal; Setup a laboratory system capable of timing two lasers independently, for optimizing and characterizing dual-pulse LIBS; Compare the development of laser-induced plasmas generated with a single laser pulse to the development of laser-induced plasmas generated with a pre-ablation spark prior to sample ablation; Examine the effect of sample matrix on the LIBS signals of elements in different sample matrices; Investigate the effect of excitation wavelength of the ablation beam in pre-ablation spark dual-pulse LIBS experiments; Determine the effect of the physical properties of the sample on the mass of materials ablated.