Laser-Induced Breakdown Spectroscopy Infrared Emission From Inorganic and Organic Substances
Abstract
Laser-induced breakdown spectroscopy (LIBS) has been established as a powerful method for identifying trace elemental contaminants by analyzing the atomic spectral emission lines that result subsequent to plasmas generated by laser power. The ultraviolet-visible-near infrared (UV-Vis- NIR) spectral region exploited in conventional LIBS largely elucidates the elemental composition of the laser target by profiling these atomic lines; very limited information on molecular species may be derived. To our best knowledge, there is no reference to LIBS measurements on emission processes outside of the UV-Vis-NIR region. In this pioneer work, attempts were made herein to probe the mid-infrared (MIR) emission from a laserinduced breakdown process between 2 to 5.75 microns. Emission features between 4200 to 4800 nm from oxygenated carbon-containing breakdown fragments and between 2000 to 4000 nm from alkali metal-containing breakdown fragments have been successfully identified. These findings could provide additional spectral information to complement the conventional LIBS analysis and launch a new analytical methodology and sensing method for future contamination avoidance applications.
Document Details
- Document Type
- Technical Report
- Publication Date
- Nov 01, 2006
- Accession Number
- ADA481534
Entities
People
- A. C. Samuels
- A. P. Snyder
- C.s. Yang
- E. Brown
- S. B. Trivedi
- U. Hömmerich