1987
DOI: 10.1070/qe1987v017n07abeh009457
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Single-frequency YAG:Nd3+laser with passiveQswitching

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Cited by 3 publications
(3 citation statements)
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“…Thus the foundations have been laid for determination of the elemental composition of analyte objects without using certified samples [4,5], although the latter have maintained their role in validation of LIBS methods and also in cases involving analysis of samples of rather complex composition. The correctness of the results obtained by LIBS in the standard-free variant can be ensured, in the absence of matrix effects, when stoichiometry is satisfied in the composition of the plasma and the test object, which is possible when the power density of the laser radiation is at a level higher than 1 GW/cm 2 .In order to improve the sensitivity of LIBS, "dual" laser pulses are used [6,7], i.e., a second laser pulse is applied to the ablation plume with a certain time delay, which excites the material vaporized by the precursor in the relatively rarefied state of the vapor/gas atmosphere; in this case, robustness of the discharge is increased, re-absorption of the spectral lines is reduced.LIBS is a very promising method for solving practical problems in many areas of science and technology: quality control for industrial production, the composition of construction materials, and the reliability of structures, …”
mentioning
confidence: 99%
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“…Thus the foundations have been laid for determination of the elemental composition of analyte objects without using certified samples [4,5], although the latter have maintained their role in validation of LIBS methods and also in cases involving analysis of samples of rather complex composition. The correctness of the results obtained by LIBS in the standard-free variant can be ensured, in the absence of matrix effects, when stoichiometry is satisfied in the composition of the plasma and the test object, which is possible when the power density of the laser radiation is at a level higher than 1 GW/cm 2 .In order to improve the sensitivity of LIBS, "dual" laser pulses are used [6,7], i.e., a second laser pulse is applied to the ablation plume with a certain time delay, which excites the material vaporized by the precursor in the relatively rarefied state of the vapor/gas atmosphere; in this case, robustness of the discharge is increased, re-absorption of the spectral lines is reduced.LIBS is a very promising method for solving practical problems in many areas of science and technology: quality control for industrial production, the composition of construction materials, and the reliability of structures, …”
mentioning
confidence: 99%
“…In order to improve the sensitivity of LIBS, "dual" laser pulses are used [6,7], i.e., a second laser pulse is applied to the ablation plume with a certain time delay, which excites the material vaporized by the precursor in the relatively rarefied state of the vapor/gas atmosphere; in this case, robustness of the discharge is increased, re-absorption of the spectral lines is reduced.…”
mentioning
confidence: 99%
“…Obviously, enhancement of the spectrum as a whole, including the intensities of the line for the analyte element, might be achieved using dual laser pulses [10,11]. In this case, the first pulse creates an expanding plasma plume, to which the laser flux of the second laser pulse is applied.…”
Section: Introductionmentioning
confidence: 99%