Journal ArticleDOI
Effect of sample temperature on laser-induced breakdown spectroscopy
TLDR
In this article, the effect of initial sample temperature on spectral emission of laser-induced plasma has been investigated and the results suggest that increasing the sample temperature can improve the limits of detection (LOD).Abstract:
The effect of initial sample temperature on spectral emission of laser-induced plasma has been investigated. The plasma has been produced on aluminum alloy surface at ambient air pressure. The sample has been uniformly heated by a heating element up to 150 °C. The spectral emission of aluminum at different initial sample temperature and gate delay times has been measured. A simple model has been improved in order to compare the analytical and experimental results. An increase in sample temperature leads to an increase in the area under spectral line profiles. The results suggest that increasing the sample temperature can improve the limits of detection (LOD).read more
Citations
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Journal ArticleDOI
Basic mechanisms of signal enhancement in ns double-pulse laser-induced breakdown spectroscopy in a gas environment
TL;DR: In this paper, the authors focus on one specific experimental case, namely ns double-pulse irradiation of solid targets in a gaseous environment, and classify the experiments according to the irradiation mode (orthogonal pre-spark, collinear and orthogonal re-heating).
Journal ArticleDOI
A comparative study of single and double pulse laser induced breakdown spectroscopy
Rizwan Ahmed,M. Aslam Baig +1 more
TL;DR: In this paper, a comparative study of single and double pulse laser induced breakdown spectroscopy (LIBS) using the fundamental (1064 nm) and the second harmonics (532 nm) of Nd:YAG lasers is presented.
Journal ArticleDOI
A comparative study of single and double pulse of laser induced breakdown spectroscopy of silver
TL;DR: In this article, the effect of the inter-pulse delay and the ratio of the laser pulse energies on the signal intensity enhancement for both the dual pulse configurations have been investigated, and it is ascertained that at the optimized value of the intra-Pulse delay between the two lasers, the intensity ratio of neutral silver lines follows the local thermo dynamical equilibrium (LTE) condition and is also in excellent agreement with that of the relative transitions probabilities ratio listed in the NIST data base.
Journal ArticleDOI
Ablation behaviors of carbon reinforced polymer composites by laser of different operation modes
TL;DR: In this article, the laser ablation mechanism of Carbon Fiber Reinforced Polymer (CFRP) composite is of critical meaning for the laser machining process and the typical temperature patterns resulted from laser irradiation are computed by finite element analysis and thereby the different ablation mechanisms are interpreted.
Journal ArticleDOI
The effect of sample temperature on the emission line intensification mechanisms in orthogonal double-pulse Laser Induced Breakdown Spectroscopy
TL;DR: In this article, double-pulse laser ablation on aluminum-based alloy target at atmospheric pressure was investigated by time-resolved optical emission spectroscopy studies were performed as a function of the distance from the first pulse induced in air to the sample surface.
References
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Journal ArticleDOI
Computer Simulations of Laser Ablation of Molecular Substrates
Leonid V. Zhigilei,Elodie Leveugle,Barbara J. Garrison,Yaroslava G. Yingling,Michael I. Zeifman +4 more
TL;DR: Computer Simulations of Laser Ablation of Molecular Substrates Chemical Reviews, 2003, Vol.
Journal ArticleDOI
A comparison of single and double pulse laser-induced breakdown spectroscopy of aluminum samples
TL;DR: In this article, a single and double pulse laser-induced breakdown spectroscopy (LIBS) was carried out on aluminum samples in air, with the aim to study possible dynamical mechanisms in different regimes.
Journal ArticleDOI
Enhanced laser-induced breakdown spectroscopy using the combination of fourth-harmonic and fundamental Nd:YAG laser pulses
TL;DR: In this paper, the combination of four-harmonic (266 nm) and fundamental (1064 nm) Nd:YAG laser pulses of the same irradiance was studied.
Journal ArticleDOI
Emission enhancement mechanisms in dual-pulse LIBS.
TL;DR: Remote analysis for challenging applications may be possible because LIBS uses only light and collects only photons, which makes it possible for remote analysis to be performed on the fly.