Inverse Calibration Free fs-LIBS of Copper-Based Alloys
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Abstract
In this work the analysis by Laser Induced Breakdown Spectroscopy (LIBS) technique of copper-based alloys having different composition and performed with fs laser pulses is presented. A Nd:Glass laser (Twinkle Light Conversion, λ = 527 nm at 250 fs) and a set of bronze and brass certified standards were used. The inverse Calibration-Free method (inverse CF-LIBS) was applied for estimating the temperature of the fs laser induced plasma in order to achieve quantitative elemental analysis of such materials. This approach strengthens the hypothesis that, through the assessment of the plasma temperature occurring in fs-LIBS, straightforward and reliable analytical data can be provided. With this aim the capability of the here adopted inverse CF-LIBS method, which is based on the fulfilment of the Local Thermodynamic Equilibrium (LTE) condition, for an indirect determination of the species excitation temperature, is shown. It is reported that the estimated temperatures occurring during the process provide a good figure of merit between the certified and the experimentally determined composition of the bronze and brass materials, here employed, although further correction procedure, like the use of calibration curves, can be demanded. The reported results demonstrate that the inverse CF-LIBS method can be applied when fs laser pulses are used even though the plasma properties could be affected by the matrix effects restricting its full employment to unknown samples provided that a certified standard having similar composition is available.
Acknowledgement
This paper draws on work undertaken under the partnership agreement (frame 1) between the CNR-ISM and the Department of Science of The Università degli Studi della Basilicata and as part of the project CLAN4SENSE (Combined Laser Nanotechnology for Solar Energy and Sensors) co-financed by the Operational Programme ERDF Basilicata 2007–2013.
©2016 Walter de Gruyter Berlin/Boston
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Articles in the same Issue
- Frontmatter
- Editorial
- The First European Conference on Physical and Theoretical Chemistry
- Inverse Calibration Free fs-LIBS of Copper-Based Alloys
- Influence of the Ce:YAG Amount on Structure and Optical Properties of Ce:YAG-PMMA Composites for White LED
- Morphological Characterization of Shape-Controlled TiO2 Anatase through XRPD Analysis
- Optical and Geometric Properties of Free Silica Nanoparticles Studied by Small-Angle X-Ray Scattering
- Olive Mill Wastewater (OMW) Phenol Compounds Degradation by Means of a Visible Light Activated Titanium Dioxide-Based Photocatalyst
- The Electrochemical Degradation of Poly(3,4-ethylenedioxythiophene) Films Electrodeposited from Aqueous Solutions
- Repassivation Investigations on Aluminium: Physical Chemistry of the Passive State
- Excitation-Energy Transfer Paths from Tryptophans to Coordinated Copper Ions in Engineered Azurins: a Source of Observables for Monitoring Protein Structural Changes
- Are Two Better Than One? A New Approach for Multidentate Grafting of Peptides to a Gold Substrate
- Peptide Hydration Phenomena through a Combined Quantum Chemical and Bottom-Up Approach
- Relative Stability of the Scleroglucan Triple-Helix and Single Strand: an Insight from Computational and Experimental Techniques
- Revised Atomistic Models of the Crystal Structure of C–S–H with high C/S Ratio
- Assessing Accuracy of Exchange-Correlation Functionals for the Description of Atomic Excited States
- Photodegradation of Organic Pollutants on TiO2 P25 Surfaces Investigated by Transmission FTIR Spectroscopy Under In Situ UV-Vis Irradiation
