Possibility of LIBS for transition probabilities determination

Details Possibility of LIBS for transition probabilities determination Possibility of LIBS for transition probabilities determination

Apr 2005

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2005spie.5830..226o&link_type=abstract

13th International School on Quantum Electronics: Laser Physics and Applications. Edited by Atanasov, Peter A.; Gateva, Sanka V

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Laser Induced Breakdown Spectroscopy (LIBS) is a one of the successfully used technique for measuring experimental atomic and ionic transition probabilities. This is due to the excitation procedure easily provides highly ionised species and neutral atoms. Nevertheless, its range also extends to another applications such as the industry or in astrophysics. In this work, we explain a specific experimental set-up -consist of fomred by a Nd:YAG laser and grating monochromator coupled with a time-resolved optical multichannel analyser. The employment of the time and spatial spectroscopy in a laser produced plasma for obtaining transition probabilities is also described. From the laser produced plasmas it is also possible to determine some of their properties such as the temperature or the composition. Besides, due to the high emission and temperature, it can be proved the existence of Local Thermodynamic Equilibrium allows determination of absolute values for the transition probabilities and the evaluation of some characteristics such as the self-absorption. The experimental data treatment for obtaining the transition probabilities and the different plasma properties that can be derived was explained.

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