@article{10902/27669,
year = {2023},
month = {3},
url = {https://hdl.handle.net/10902/27669},
abstract = {LIBS technique requires the spectroscopic analysis of the light emitted by a laser-induced plasma plume. One challenge of the different approaches to capture the plasma light emission is the significant shot-to-shot variations of the plume inhomogeneities, position, and morphology. This is even more challenging when multichannel CCD spectrometers are used, because the light should be homogeneously divided among multiple capturing optical fibers (typically up to 8 fibers) with stable spectral efficiency for all channels. Otherwise, any further analysis of the atomic emission spectra involving multiple channels, such as line intensity ratios, Boltzmann plots, or calibration-free LIBS, could be compromised by the morphology-dependent spectral artifacts induced by the collection optics. In this work, we assess the performance of several collection optics in terms of overall capturing efficiency and channel-to-channel variations due to changes in plasma morphology. Results clearly show that this could be an issue even with the approaches with the best spatial homogenization, including optical fibers and Köhler optics.},
organization = {This work was supported by the R + D project PID2019-107270RBC21 (funded by MCIN/AEI10.13039/501100011033) and by Plan Nacional de I + D + and Instituto de Salud Carlos III (ISCIII), Subdirección General de Redes y Centros de Investigación Cooperativa, Ministerio de Ciencia, Innovación y Universidades, Spanish Network for Research in Infectious Diseases (REIPI RD16/0016/0007), CIBERINFEC
(CB21/13/00068), CIBER-BBN (BBNGC1601), cofinanced by European Development Regional Fund “A way to achieve Europe”. A. O.-S was financially supported by the Miguel Servet II program (ISCIIICPII17–00011). AGE was supported by the Catalonia Government throughout a Beatriu de Pin´os fellowship (grant number 2020 BP
00240). We thanks Dr. A. Pic´on for providing the pure iron ingot and helpful suggestions to improve the experimental setup.},
publisher = {Elsevier},
publisher = {Spectrochimica Acta - Part B Atomic Spectroscopy, 2023, 201, 106617},
publisher = {42º Colloquium Spectroscopicum Internationale, Gijón, España, 2022},
title = {Comparison of light capturing approaches in Laser-Induced Breakdown Spectroscopy (LIBS) for multichannel spectrometers},
author = {Fernández Manteca, María Gabriela and Martínez Minchero, Marina and García Escárzaga, Asier and Ocampo Sosa, Alain Antonio and Mirapeix Serrano, Jesús María and Valdiande Gutiérrez, José Julián and López Higuera, José Miguel and Rodríguez Cobo, Luis and Cobo García, Adolfo},
}