Packing density effects on the fluctuations of the emission lines in laser-induced breakdown spectroscopy

Sivakumar, P.; Taleh, L.; Markushin, Yuri; Melikechi, Noureddine

doi:10.1016/j.sab.2013.10.007

Cited by 21 publications

(11 citation statements)

References 25 publications

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“…If a rock has grains considerably smaller than the laser spot diameter, the bulk composition of the rock is analyzed at each point (Anderson et al, 2011;McCanta et al, 2013; and little to no point-to-point chemical variability is observed (Fig. 2;Sivakumar et al, 2014). However, if a rock has grains similar in size or larger than the laser spot diameter, each point can potentially have a different composition reflecting individual grain compositions (McCanta et al, 2013;.…”

Section: Chemcam Libs Data As Proxy For Grain Sizementioning

confidence: 99%

Using ChemCam LIBS data to constrain grain size in rocks on Mars: Proof of concept and application to rocks at Yellowknife Bay and Pahrump Hills, Gale crater

Rivera‐Hernández

Sumner²,

Mangold

et al. 2019

Icarus

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HAL is a multidisciplinary open access archive for the deposit and dissemination of scientific research documents, whether they are published or not. The documents may come from teaching and research institutions in France or abroad, or from public or private research centers. L'archive ouverte pluridisciplinaire HAL, est destinée au dépôt et à la diffusion de documents scientifiques de niveau recherche, publiés ou non, émanant des établissements d'enseignement et de recherche français ou étrangers, des laboratoires publics ou privés.

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Section: Chemcam Libs Data As Proxy For Grain Sizementioning

confidence: 99%

Using ChemCam LIBS data to constrain grain size in rocks on Mars: Proof of concept and application to rocks at Yellowknife Bay and Pahrump Hills, Gale crater

Rivera‐Hernández

Sumner²,

Mangold

et al. 2019

Icarus

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“…1. A detailed description of the LIBS experimental setup used for this work can be found in previous publications (Sivakumar et al, 2013(Sivakumar et al, , 2014. A CPA-Series Ti-sapphire 150 fs ultrashort laser (Clark-MXR, Model 2210) operating at 775 nm with pulse energy 1.4 mJ per pulse was focused on the sample surface to generate a laserinduced microplasma by using a fused silica biconvex lens of 50 mm.…”

Section: Libs Experimental Setup and Proceduresmentioning

confidence: 99%

“…Laser-induced breakdown spectroscopy (LIBS) has the capability to provide rapid spectrochemical analysis of various samples of any type in laboratory settings, in situ, and stand-off, as well as in hostile environments, including on the Mars Science Laboratory rover Wiens et al, 2012;Sivakumar et al, 2013Sivakumar et al, , 2014Melikechi et al, 2014). Recent results have shown the benefit of LIBS with nanosecond (ns) or femtosecond (fs) laser pulses to identify bacterial strains and specifically E. coli bacteria.…”

Section: Introductionmentioning

confidence: 99%

Detection and Classification of Live and DeadEscherichia coliby Laser-Induced Breakdown Spectroscopy

et al. 2015

Self Cite

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A common goal for astrobiology is to detect organic materials that may indicate the presence of life. However, organic materials alone may not be representative of currently living systems. Thus, it would be valuable to have a method with which to determine the health of living materials. Here, we present progress toward this goal by reporting on the application of laser-induced breakdown spectroscopy (LIBS) to study characteristics of live and dead cells using Escherichia coli (E. coli) strain K12 cells as a model organism since its growth and death in the laboratory are well understood. Our goal is to determine whether LIBS, in its femto-and/or nanosecond forms, could ascertain the state of a living organism. E. coli strain K12 cells were grown, collected, and exposed to one of two types of inactivation treatments: autoclaving and sonication. Cells were also kept alive as a control. We found that LIBS yields key information that allows for the discrimination of live and dead E. coli bacteria based on ionic shifts reflective of cell membrane integrity. Key Words: E. coli-Trace elements-Live and dead cells-Laser-induced breakdown spectroscopy-Atomic force microscopy. Astrobiology 15, 144-153.

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“…One of the main advantages in LIBS is the simultaneous sampling and excitation, which can be achieved with a single laser pulse. Many solid samples can be analyzed directly or with minimal preparation, so LIBS shortens the full analysis cycle compared to most other analysis techniques1217. Standard ICP or discharge based techniques must use background argon or other noble gases to perform analysis, which is not a necessary part for most LIBS experiments.…”

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confidence: 99%

Laser Induced Breakdown Spectroscopy Based on Single Beam Splitting and Geometric Configuration for Effective Signal Enhancement

Yang¹,

Lin

Ding

et al. 2015

Sci Rep

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A new laser induced breakdown spectroscopy (LIBS) based on single-beam-splitting (SBS) and proper optical geometric configuration has been initially explored in this work for effective signal enhancement. In order to improve the interaction efficiency of laser energy with the ablated material, a laser beam operated in pulse mode was divided into two streams to ablate/excite the target sample in different directions instead of the conventional one beam excitation in single pulse LIBS (SP-LIBS). In spatial configuration, the laser beam geometry plays an important role in the emission signal enhancement. Thus, an adjustable geometric configuration with variable incident angle between the two splitted laser beams was constructed for achieving maximum signal enhancement. With the optimized angles of 60° and 70° for Al and Cu atomic emission lines at 396.15 nm and 324.75 nm respectively, about 5.6- and 4.8-folds signal enhancements were achieved for aluminum alloy and copper alloy samples compared to SP-LIBS. Furthermore, the temporal analysis, in which the intensity of atomic lines in SP-LIBS decayed at least ten times faster than the SBS-LIBS, proved that the energy coupling efficiency of SBS-LIBS was significantly higher than that of SP-LIBS.

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Packing density effects on the fluctuations of the emission lines in laser-induced breakdown spectroscopy

Cited by 21 publications

References 25 publications

Using ChemCam LIBS data to constrain grain size in rocks on Mars: Proof of concept and application to rocks at Yellowknife Bay and Pahrump Hills, Gale crater

Using ChemCam LIBS data to constrain grain size in rocks on Mars: Proof of concept and application to rocks at Yellowknife Bay and Pahrump Hills, Gale crater

Detection and Classification of Live and DeadEscherichia coliby Laser-Induced Breakdown Spectroscopy

Laser Induced Breakdown Spectroscopy Based on Single Beam Splitting and Geometric Configuration for Effective Signal Enhancement

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