Laser-induced breakdown spectroscopy of liquid media with femtosecond laser excitation

Букин, О. А.; Golik, S. S.; Ильин, А. А.; Kulchin, Yu. N.; Sokolova, E. B.; Baulo, E. N.

doi:10.1134/s1024856009020122

Cited by 12 publications

(9 citation statements)

References 9 publications

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“…t delay and t det can be varied, depending on the elements and functional characteristics of the laser system: the laser wavelength, pulse energy, and duration. This paper is a continuation of previous work [12]. Here we study the spectral composition of the plasma emission, the temporal characteristics of the line and continuum spectra, and estimate the temperature and electron density of the plasma.…”

Section: Introductionmentioning

confidence: 94%

“…The time dependence of the line and continuum spectra following breakdown on liquid surfaces by femtosecond laser pulses has not yet been studied in detail. Studies of this type have only been reported in [12,13]. One of the major characteristics of LIBS is a detection limit which depends on the ratio of the line intensities to the background (signal-to-background ratio, SBR); that is, if a high emission line intensity with a low background is observed, then the sensitivity is higher.…”

Section: Introductionmentioning

confidence: 98%

“…Thus, there is a pressing need for rapid laser techniques for studying the microscopic composition of seawater that can meet this threshold for detection of microelements. Studies of the use of femtosecond laser pulse LIBS of liquid media [12] have shown that the detection limit for sodium is at a level of ~10 -6 g/l. Thus, it seems possible to carry out spectral analysis of seawater using femtosecond laser pulses.…”

Section: Introductionmentioning

confidence: 99%

“…The experimental apparatus has been described in [12]. Laser pulses were generated by a Ti:Sa laser unit consisting of a laser oscillator (Tsunami, Spectra Physics) and amplifier (SpitFire 40F, Spectra Physics).…”

Section: Introductionmentioning

confidence: 99%

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Time evolution of emission spectra from plasmas produced by irradiation of seawater surfaces by a femtosecond laser

et al. 2012

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543.423;533.9 The spectral and temporal characteristics of plasmas produced by femtosecond laser pulses acting on seawater surfaces are studied. The time dependence of the decay in the intensities of emission lines and the continuum are determined and the electron density is estimated using the three-body recombination time. It is shown that an atomic line with a low excitation potential is the most sensitive for femtosecond laser induced breakdown spectroscopy.Introduction. The increasing anthropogenic effect on the world's oceans has created a need for the development of new methods for monitoring marine ecosystems. Laser induced breakdown spectroscopy (LIBS) is definitely one such operational technique. LIBS does not require advanced preparation of samples, can be used for spectral analysis in real time, is a contactless, remote analysis technique, and can be used to determine the concentrations of a wide range of elements with relatively small sample sizes. The use of LIBS for determining the elemental composition of seawater was first proposed in [1,2]. Further studies have established the optimal parameters for detection of the emission lines of the elements dissolved in seawater with breakdown by nanosecond laser pulses [3-10]. The detection limits for elements by this method of laser plasma excitation is ~10

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Section: Introductionmentioning

confidence: 94%

Section: Introductionmentioning

confidence: 98%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Time evolution of emission spectra from plasmas produced by irradiation of seawater surfaces by a femtosecond laser

et al. 2012

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“…Herewith the elemental analysis and spectral characteristics of laser breakdown on a liquid surface are scarcely investigated. It should be noted work [10] in which the distribution of Ca 2+ ion in water and biological samples is investigated, as well as works [11][12][13] in which temporal behavior of emission of plasma generated on the sea water surface is described and detection limits of elements is determined [13].…”

Section: Introductionmentioning

confidence: 99%

The relationship of detection limits with electron impact excitation rate constants

Ilyin

Sokolova

2012

SPIE Proceedings

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It's shown that the increasing of electron impact excitation rate constant lead to increasing of line intensity, so the limit of detection (LOD) is lower. For femtosecond laser plasma generated on the sea water surface, the relation of the detection limits will be LOD(Na) < LOD(Ca) < LOD(Mg). The fact that the atomic line of Ca I 422 nm is more sensitive for femtosecond laser-induced breakdown spectroscopy is described.

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Femtosecond laser-induced breakdown spectroscopy of sea water

Ilyin

Golik

2013

Spectrochimica Acta Part B: Atomic Spectroscopy

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Laser-induced breakdown spectroscopy of liquid media with femtosecond laser excitation

Cited by 12 publications

References 9 publications

Time evolution of emission spectra from plasmas produced by irradiation of seawater surfaces by a femtosecond laser

Time evolution of emission spectra from plasmas produced by irradiation of seawater surfaces by a femtosecond laser

The relationship of detection limits with electron impact excitation rate constants

Femtosecond laser-induced breakdown spectroscopy of sea water

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