The mechanism of ArF laser-induced fluorescence of dense plume matter

Wang, Xiaochun; Huang, Zhiyong; Chu, Po Chun; Cai, Yue; Leung, Kelvin Sze-Yin; Lum, Judy Tsz-Shan; Cheung, Nai Ho

doi:10.1039/c6ja00290k

Cited by 19 publications

(12 citation statements)

References 48 publications

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“…The corresponding pulse energy does not need to be high like in traditional ablation, because the acceleration of electron should be reduced in order to enhance the excitation for the fluorescence. This technique allows investigating the plasma in the initial stage of expansion, when the number density of ablated material is still very high, and allows to strongly enhance the sensitivity of atomic detection [114].…”

Section: Perspectivesmentioning

confidence: 99%

Laser-induced plasma emission: from atomic to molecular spectra

Giacomo¹,

Hermann²

2017

J. Phys. D: Appl. Phys.

126

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The aim of this paper is the description of the optical emission spectral features of the plasma produced by laser matter interaction from a fundamental point of view. The laser induced plasma emission spectra are discussed in connection with the basic mechanisms that take place in the plasma phase at different time delays from the laser pulse. Being the laser induced plasma a dynamics system, the hierarchy of the elementary mechanisms changes continuously because the electron number density and the electron temperature decrease during the expansion. As a consequence of this, along the plasma's persistence time, the prevailing emitting species changes from ions to atoms and from atoms to molecules. Both atomic and molecular emission spectroscopy are discussed to convey a complete description of temporal evolution of the laser induced plasma. Current literature, as well as the traditional plasma's theories, are presented and discussed in order to give to the reader a general idea of the potentialities and of the drawbacks of emission spectroscopy for the study of laser induced plasma and the of the various applications.

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Section: Perspectivesmentioning

confidence: 99%

Laser-induced plasma emission: from atomic to molecular spectra

Giacomo¹,

Hermann²

2017

J. Phys. D: Appl. Phys.

126

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“…To interpret the behavior of the unselective signal enhancement, Cheung et al proposed a plausible dense plume model based on the experiment phenomenon. 13,23 Based on the generally applied low ablation laser energy, the authors assumed that the ablation laser just created a vapor plume without igniting the ionized plasma. The plume refers to the ow of two uids with a density difference, 24 from which the name came.…”

Section: Introductionmentioning

confidence: 99%

Multi-element signal enhancement mechanism investigation for laser ablation-assisted ultraviolet laser excited atomic fluorescence

Kou

Song

et al. 2023

J. Anal. At. Spectrom.

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“…The ArF laser pulse vaporized the ink particulates in the plume to produce analyte atoms. The trailing portion of the same 193-nm laser pulse induced the various analytes to fluoresce [20].…”

Section: Plif Analysismentioning

confidence: 99%

Elemental analysis of Chinese red seal inks on xuan paper by ArF laser-induced plume fluorescence

Cai¹,

Motto-Ros²,

Detalle³

et al. 2017

Proceedings of the International Conference LACONA XI

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Chemical analysis of Chinese red seal ink on xuan paper is useful for the authentication of Asian artwork. The analysis has to be nondestructive and has to accommodate artworks of all sizes. We use ArF laser-induced plume fluorescence to analyze six commercial Chinese red seal inks on xuan paper. Two nano-second laser pulses are required for the analysis. The first 355 nm laser pulse desorbs a thin layer of the ink to create a plume; the second 193 nm laser pulse induces multi analytes in the plume to fluoresce. Partial-least-square discriminant analysis of the fluorescence spectra unambiguously sorts the six inks while the sampled area is not visibly damaged even under the microscope. The laser probe can handle samples of arbitrary size and shape, is air compatible, and no sample pretreatment is necessary.

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The mechanism of ArF laser-induced fluorescence of dense plume matter

Cited by 19 publications

References 48 publications

Laser-induced plasma emission: from atomic to molecular spectra

Laser-induced plasma emission: from atomic to molecular spectra

Multi-element signal enhancement mechanism investigation for laser ablation-assisted ultraviolet laser excited atomic fluorescence

Elemental analysis of Chinese red seal inks on xuan paper by ArF laser-induced plume fluorescence

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