Application of response surface methodology to laser-induced breakdown spectroscopy : influences of hardware configuration
| Autor: | Cowpe, JS, Astin, JS, Pilkington, RD, Hill, AE, Longson, M, Robinson, T |
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| Jazyk: | angličtina |
| Rok vydání: | 2007 |
| Předmět: |
Materials science
Spectrometer Atmospheric pressure business.industry Noise (signal processing) other Signal Atomic and Molecular Physics and Optics Analytical Chemistry law.invention Lens (optics) Quality (physics) Optics law Laser-induced breakdown spectroscopy Response surface methodology business Instrumentation Spectroscopy Computer hardware QC |
| ISSN: | 0584-8547 |
| Popis: | Response Surface Methodology (RSM) was employed to optimise LIBS analysis of single crystal silicon at atmospheric pressure and under vacuum conditions (pressure ~10-6mbar). Multivariate analysis software (StatGraphics 5.1) was used to design and analyse several multi-level, full factorial RSM experiments. A Quality Factor (QF) was conceived as the response parameter for the experiments, representing the quality of the LIBS spectrum captured for a given hardware configuration. The QF enabled the hardware configuration to be adjusted so that a best compromise between resolution, signal intensity and signal noise could be achieved. The effect on the QF of simultaneously adjusting spectrometer gain, gate delay, gate width, lens position and spectrometer slit width was investigated, and the conditions yielding the best QF determined. |
| Databáze: | OpenAIRE |
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