Surface interaction and chemical imaging in plasma spectrometry induced with a line-focused laser beam

Mateo, M.; Cabalı́n, L.M.; Baena, J. M.; Laserna, J.J.

doi:10.1016/s0584-8547(01)00387-1

Cited by 34 publications

(18 citation statements)

References 14 publications

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“…Primary focusing was accomplished by an antireflection (AR)-coated f ϭ 40 mm cylindrical lens that focused the ablation pulses to a line approximately 100 m in width. The line-focused laser beam sampled a much larger target area per pulse and provided a significant improvement in spectrum reproducibility over a 5ϫ microscope objective and conventional spherical lens [14]. The second cylindrical lens (AR coated, f ϭ 75.6 mm) was placed in front of the focusing lens with its axis rotated perpendicular to the focusing lens's axis.…”

Section: B Libsmentioning

confidence: 99%

Detection of trace Al in model biological tissue with laser-induced breakdown spectroscopy

Adamson

Rehse

2007

Appl. Opt.

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Laser-induced breakdown spectroscopy (LIBS), which is an excellent tool for trace elemental analysis, was studied as a method of detecting sub-part-per-10 6 (ppm) concentrations of aluminum in surrogates of human tissue. Tissue was modeled using a 2% agarose gelatin doped with an Al 2 O 3 nanoparticle suspension. A calibration curve created with standard reference samples of known Al concentrations was used to determine the limit of detection, which was less than 1 ppm. Rates of false negative and false positive detection results for a much more realistic sampling methodology were also studied, suggesting that LIBS could be a candidate for the real-time in vivo detection of metal contamination in human soft tissue.

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Section: B Libsmentioning

confidence: 99%

Detection of trace Al in model biological tissue with laser-induced breakdown spectroscopy

Adamson

Rehse

2007

Appl. Opt.

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“…A sample size of 60 × 60 mm 2 with a step size of 50 µm was used, and the resulting quantified elemental maps correlated well with the data from conventional methods. Mateo [20] performed an automated line imaging arrangement for 2D and 3D generation of chemical maps of inclusions in stainless steel using LIBS. In comparison with the point-to-point LIBS mapping method, a 51-fold reduction in the number of pulses and analysis time was achieved when the microline imaging approach was employed.…”

Section: Introductionmentioning

confidence: 99%

Characterization of the globular oxide inclusion ratings in steel using laser-induced breakdown spectroscopy

Zhang¹,

Jia

Yang

et al. 2016

Front. Phys.

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Grade assessment of steel is generally performed via the metallographic method, which is timeconsuming and is not able to provide the elemental distribution information. In this paper, we present a method to measure the globular oxide inclusion ratings in steel using laser-induced breakdown spectroscopy (LIBS). The measurement is performed in two basic steps: steel samples are polished using metallographic sand paper and the Al 2 O 3 inclusion number and size distribution in a marked area are observed using scanning electron microscope/energy dispersive X-ray spectroscopy (SEM/EDS) for further LIBS scanning analysis. The threshold intensity that distinguishes soluble aluminum and insoluble aluminum inclusions is determined using LIBS combined with the SEM/EDS statistical data. Carbon steel (the sample number is S9256) and bearing steel (the sample number is GCr15) are analyzed in scanning mode, and the number of Al 2 O 3 inclusions in different size ranges is obtained from the statistical information derived from the Al 2 O 3 size calibration curve. According to heavy and thin series for globular oxide inclusions grade assessment, the method we propose is comparable to the traditional metallographic method in terms of accuracy; however, the process is simplified and the measurement speed is significantly improved.

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“…In previous studies the microline approach has been applied successfully to the fast generation of surface chemical maps of the sample. 26,27 In the present work, this method has been tested for the first time to obtain additional depth information from the analysis and to generate multidimensional data sets incorporating LIP signal intensity versus wavelength and versus x-, y-and z-positions on the sample. To demonstrate the capability of the technique, edge connectors of a printed circuit board have been analysed.…”

Section: Introductionmentioning

confidence: 99%

Chemical maps of patterned samples by microline‐imaging laser‐induced plasma spectrometry

Cabalı́n

Mateo

Laserna

2003

Surface & Interface Analysis

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The potential of a microline-imaging laser-induced plasma spectrometry (LIPS) system for surface and depth analysis of heterogeneous solid samples in air at atmospheric pressure has been demonstrated. A pulsed Nd : YAG laser beam operating at 532 nm, with a homogeneous energy distribution (flat top laser), was used to generate a microline plasma on the sample surface. Subsequent light from the microline plasma was resolved spectrally and spatially and detected with an imaging spectrograph and an intensified charged-coupled device detector. A patterned metal sample was chosen as the most appropriate for this study. Three-dimensional chemical maps of Ni and Cu from the edge connectors of a printed circuit board have been obtained. With this experimental configuration, the lateral resolution (limited by crater width) was 42 µm and the spatial resolution along the spectrometer slit was 17.4 µm. The results illustrate the capability of microline imaging for fast mapping of large-area samples and for depth profiling purposes.

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Surface interaction and chemical imaging in plasma spectrometry induced with a line-focused laser beam

Cited by 34 publications

References 14 publications

Detection of trace Al in model biological tissue with laser-induced breakdown spectroscopy

Detection of trace Al in model biological tissue with laser-induced breakdown spectroscopy

Characterization of the globular oxide inclusion ratings in steel using laser-induced breakdown spectroscopy

Chemical maps of patterned samples by microline‐imaging laser‐induced plasma spectrometry

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