Time-resolved spectroscopy and imaging diagnostics of single pulse and collinear double pulse laser induced plasma from a glass sample

Бураков, В. С.; Тарасенко, Н. В.; Nedelko, Mikhail; Isakov, S. N.

doi:10.1016/j.sab.2007.10.050

Cited by 23 publications

(11 citation statements)

References 20 publications

(32 reference statements)

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“…For example, some investigations [11,[23][24][25] on emission lines in the visible spectral regime emitted from a solid (often metallic) sample ablated by ns pulse duration lasers reported ambient pressures preferably under 200 mbar or even as low as 10 mbar. As an enhancement combination, the influence of ambient gas is often studied on single-pulse (SP) and doublepulse (DP) laser induced plasmas [26,27]. In both SP and DP cases, line intensities are enhanced with reduced ambient gas pressures (below atmospheric pressure).…”

Section: Introductionmentioning

confidence: 99%

Double-pulse laser induced breakdown spectroscopy with ambient gas in the vacuum ultraviolet: Optimization of parameters for detection of carbon and sulfur in steel

Hayden

Costello

Kennedy

2014

Spectrochimica Acta Part B: Atomic Spectroscopy

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Section: Introductionmentioning

confidence: 99%

Double-pulse laser induced breakdown spectroscopy with ambient gas in the vacuum ultraviolet: Optimization of parameters for detection of carbon and sulfur in steel

Hayden

Costello

Kennedy

2014

Spectrochimica Acta Part B: Atomic Spectroscopy

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“…shielding for the ablation pulse [29,30]. Higher sensitivity was also evident in the double pulse pre-spark configuration, than when compared to all other experimental data, due to the resolution of emission line Ti II 336.12 nm.…”

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confidence: 59%

Wavelength Dependence on the Forensic Analysis of Glass by Laser Induced Breakdown Spectroscopy

Cahoon¹,

Almirall²

2009

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The public reporting burden for this collection of information is estimated to average 1 hour per response, including the time for reviewing instructions, searching existing data sources, gathering and maintaining the data needed, and completing and reviewing the collection of information. Laser Induced Breakdown Spectroscopy (LIBS) can be used for the chemical characterization of glass to provide evidence of an association between a fragment found at a crime scene to a source of glass of known origin. Two different laser irradiances, 266 nm and 1064 nm, were used to conduct qualitative and quantitative analysis of glass standards. Single-pulse and double-pulse configurations and lens-to-sample-distance (LTSD) settings were optimized to yield the best laser-glass coupling. Laser energy and acquisition timing delays were also optimized to ABSTRACTLaser Induced Breakdown Spectroscopy (LIBS) can be used for the chemical characterization of glass to provide evidence of an association between a fragment found at a crime scene to a source of glass of known origin. Two different laser irradiances, 266 nm and 1064 nm, were used to conduct qualitative and quantitative analysis of glass standards. Single-pulse and double-pulse configurations and lens-to-sample-distance (LTSD) settings were optimized to yield the best laser-glass coupling. Laser energy and acquisition timing delays were also optimized to result in the highest signal to noise ratio. The crater morphology was examined and the mass removed was calculated for both the 266 nm and 1064nm irradiations. The analytical figures of merit suggest that the 266 nm and 1064 nm wavelengths are capable of good performance for the forensic chemical characterization of glass. The results presented here suggest that the 266 nm laser produces a better laser-glass matrix coupling resulting in a better stoichiometric representation of the glass sample. The 266 nm irradiance is therefore recommended for the forensic analysis and comparison of glass samples.

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“…The experimental apparatus made it possible to analyze the time evolution of the emission from the flare with spatial resolution. the diagnostic techniques are described in detail elsewhere [14]. A CCD array (1024 × 256 pixels) with an electro-optical brightness amplifier (diameter 18 mm, minimum gate width 10 ns) and a photomultiplier were used to detect the light.…”

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confidence: 99%

Laser-induced plasmas in liquids for nanoparticle synthesis

2010

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Spatially and temporally resolved emission spectroscopy is used to study the major features of the onset and evolution of plasmas created by pulsed laser irradiation of targets immersed in liquids. It is shown that double pulse operation provides an enhanced rate of nanoparticle formation and increases the emission signal from the plasma atoms and ions owing to more efficient ablation of the target material. The main parameters (density of atoms, electron temperature and density) of laser-induced plasmas in liquids are estimated. The prospects of laser ablation in liquids as a method for producing nanoparticles are analyzed.Keywords: laser-induced plasmas in liquids, double pulse ablation, electron density and temperature, spatially and temporally resolved emission spectroscopy.Introduction. In recent years there has been increased interest in the production and study of nanostructured materials. The structural elements of these materials have characteristic sizes in the range of 1-100 nm so they can have unique electronic, magnetic, and chemical properties which differ from those of the corresponding bulk materials. For example, nanostructured materials can have enhanced mechanical characteristics (hardness, durability), catalytic activity, or luminescence properties, which are absent or less marked in their macroscopic analogs. Thus, nanostructures offer great promise for heterogeneous catalysis and micro-and optoelectronics, and can be used as gas sensors in medicine, biology, and other areas [1][2][3].It should be noted that different methods of nanoparticle synthesis are used, depending on their size, shape, and chemical composition : physical methods based on vapor condensation [4], chemical methods using reduction reactions of metallic ions from solutions of their salts [5], and combined methods [6]. In a number of cases, nanoparticles are obtained in the form of colloidal solutions, which are most often produced by various chemical methods. The main deficiency of these methods is that, besides the nanoparticles, these solutions contain ions and other reaction byproducts which are often difficult to avoid. An alternative method of obtaining nanoparticles that is free of these deficiencies is laser ablation of solids in liquids [7-10].One of the advantages of the laser ablation technique is its universality -the possibility of using it for metals and alloys, semiconductors and dielectrics with different compositions, fairly extensive control of the properties of the synthesized particles by changing the parameters of the laser radiation, and the production of composite particles by ablation of multicomponent targets.Laser ablation of solids can take place in a gaseous atmosphere or in a liquid. In the latter case there is no need use costly vacuum systems and the problem of collecting the nanoparticles is comparatively simple, compared to the difficulties of doing so in gaseous atmospheres. With ablation in a liquid the nanoparticles remain in the volume of the liquid and form a colloidal solution.Although ...

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Time-resolved spectroscopy and imaging diagnostics of single pulse and collinear double pulse laser induced plasma from a glass sample

Cited by 23 publications

References 20 publications

Double-pulse laser induced breakdown spectroscopy with ambient gas in the vacuum ultraviolet: Optimization of parameters for detection of carbon and sulfur in steel

Double-pulse laser induced breakdown spectroscopy with ambient gas in the vacuum ultraviolet: Optimization of parameters for detection of carbon and sulfur in steel

Wavelength Dependence on the Forensic Analysis of Glass by Laser Induced Breakdown Spectroscopy

Laser-induced plasmas in liquids for nanoparticle synthesis

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