| PROCHAZKA, David, Pavel PORIZKA, Jan NOVOTNY, Aleš HRDLIČKA, Karel NOVOTNÝ, Petr SPERKA a Jozef KAISER. Triple-pulse LIBS: laser-induced breakdown spectroscopy signal enhancement by combination of pre-ablation and re-heating laser pulses. Journal of analytical atomic spectrometry. Cambridge: Royal Society of Chemistry, 2020, roč. 35, č. 2, s. 293-300. ISSN 0267-9477. Dostupné z: https://dx.doi.org/10.1039/c9ja00323a. |
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@article{1652436,
author = {Prochazka, David and Porizka, Pavel and Novotny, Jan and Hrdlička, Aleš and Novotný, Karel and Sperka, Petr and Kaiser, Jozef},
article_location = {Cambridge},
article_number = {2},
doi = {http://dx.doi.org/10.1039/c9ja00323a},
keywords = {EMISSION ENHANCEMENT; INDUCED PLASMA; STEEL SAMPLES; SINGLE-PULSE; ALUMINUM; SENSITIVITY; IMPROVEMENT; LEAD; NANOPARTICLES; RESIDUES},
language = {eng},
issn = {0267-9477},
journal = {Journal of analytical atomic spectrometry},
title = {Triple-pulse LIBS: laser-induced breakdown spectroscopy signal enhancement by combination of pre-ablation and re-heating laser pulses},
url = {https://doi.org/10.1039/C9JA00323A},
volume = {35},
year = {2020}
}
TY - JOUR
ID - 1652436
AU - Prochazka, David - Porizka, Pavel - Novotny, Jan - Hrdlička, Aleš - Novotný, Karel - Sperka, Petr - Kaiser, Jozef
PY - 2020
TI - Triple-pulse LIBS: laser-induced breakdown spectroscopy signal enhancement by combination of pre-ablation and re-heating laser pulses
JF - Journal of analytical atomic spectrometry
VL - 35
IS - 2
SP - 293-300
EP - 293-300
PB - Royal Society of Chemistry
SN - 02679477
KW - EMISSION ENHANCEMENT
KW - INDUCED PLASMA
KW - STEEL SAMPLES
KW - SINGLE-PULSE
KW - ALUMINUM
KW - SENSITIVITY
KW - IMPROVEMENT
KW - LEAD
KW - NANOPARTICLES
KW - RESIDUES
UR - https://doi.org/10.1039/C9JA00323A
L2 - https://doi.org/10.1039/C9JA00323A
N2 - The goal of this work is to examine the effect of a third additional laser pulse on orthogonal double-pulse laser-induced breakdown spectroscopy (DP LIBS). Namely, a pre-ablation laser pulse and re-heating laser pulse were combined into triple-pulse LIBS (3P LIBS) to achieve plasma emission enhancement. The experiment was designed with emphasis on causing minimal sample damage by utilizing nanosecond laser pulses. It means that the energy of ablation laser pulses was set to the minimal value for which the intensities of selected spectral lines were above the limits of detection. This energy as well as the energies of the pre-ablation and the re-heating laser pulses were kept constant for all experimental arrangements. The interpulse delays for both DP LIBS and for 3P LIBS configurations were optimized for signal enhancements. The 3P LIBS results showed up to 5-fold improvement of the signal to background ratio compared with both DP LIBS arrangements and up to 228-fold improvement in comparison to conventional SP LIBS. In addition, it has been shown that the spectral lines with a higher value of excitation energy prove higher enhancement in both DP LIBS and 3P LIBS configurations. To explain this effect, the dimensions of ablation craters were measured for each configuration using a 3D optical microscope and the temperature was determined from the slope of the Boltzmann plot. It was shown that the pre-ablation causes an increase of ablation crater dimensions and the re-heating increases the plasma temperature.
ER -
PROCHAZKA, David, Pavel PORIZKA, Jan NOVOTNY, Aleš HRDLIČKA, Karel NOVOTNÝ, Petr SPERKA a Jozef KAISER. Triple-pulse LIBS: laser-induced breakdown spectroscopy signal enhancement by combination of pre-ablation and re-heating laser pulses. \textit{Journal of analytical atomic spectrometry}. Cambridge: Royal Society of Chemistry, 2020, roč.~35, č.~2, s.~293-300. ISSN~0267-9477. Dostupné z: https://dx.doi.org/10.1039/c9ja00323a.
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