2026-05-31T12:36:17Zhttps://riuma.uma.es/rest/oai/requestoai:riuma.uma.es:10630/289182026-02-03T11:05:26Zcom_10630_2254col_10630_37953
RIUMA. Repositorio Institucional de la Universidad de Málaga
author
Purohit, Pablo
author
Fortes-Román, Francisco Javier
author
Laserna-Vázquez, José Javier
2024-01-19T10:01:49Z
2024-01-19T10:01:49Z
2017-02-16
Purohit, P.; Fortes, F. J.; Laserna, J. J. Spectrochim. Acta, Part B 2017, 130, 75−81
https://hdl.handle.net/10630/28918
10.1016/j.sab.2017.02.009
Laser-induced breakdown spectroscopy (LIBS) was employed for investigating the influence of particle size on the dissociation efficiency and the absolute production of photons per mass unit of airborne solid graphite spheres under single-particle regime. Particles of average diameter of 400 nm were probed and compared with 2 μm particles. Samples were first catapulted into aerosol form and then secluded in an optical trap set by a 532 nmlaser. Trap stability was quantified before subjecting particles to LIBS analysis. Fine alignment of the different lines comprising the optical catapulting-optical trapping-laser induced breakdown spectroscopy instrument and tuning of excitation parameters conditioning the LIBS signal such as fluence and acquisition delay are described in detail with the ultimate goal of acquiring clear spectroscopic data on masses as low as 75 fg. The atomization efficiency and the photon yield increase as the particle size becomes smaller. Time-resolved plasma imaging studies were conducted to elucidate the mechanisms leading to particle disintegration and excitation.
eng
Atribución-NoComercial-CompartirIgual 4.0 Internacional
Nanopartículas
Espectroscopía de plasma inducido por láser
Atomization efficiency and photon yield in laser-induced breakdown spectroscopy analysis of single nanoparticles in an optical trap.
journal article
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URL
https://riuma.uma.es/bitstreams/eed54c5c-75c5-4f84-9910-a0226b6fb9cc/download
File
MD5
c9813b7cc01a68ba116976434b6cfcf1
807944
application/pdf
2017_SAB_OTLIBS.pdf