Development of a Stand-off Laser Induced Breakdown Spectroscopy (ST-LIBS) system for the analysis of complex matrices

Tamboli, M. M.; Unnikrishnan, V. K.; Nayak, Rajesh; Devangad, Praveen; Shameem, K. M. Muhammed; Kartha, V. B.; Chidangil, Santhosh

doi:10.1088/1748-0221/11/08/p08021

Cited by 14 publications

(2 citation statements)

References 51 publications

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“…Although the conventional wet chemistry methods can provide precise results of the material composition, their use is limited to laboratory environments. Therefore, LIBS can be effectively used as a standoff technique in nuclear plants [18], hazardous environments [19] and planetary explorations [20], for example. Xray based methods for elemental analysis is very attractive in the glass industry but they can predict bet ter results for major and minor components.…”

Section: Spectroscopic Identification Of Rare Earth Elements In Phosp...mentioning

confidence: 99%

Spectroscopic identification of rare earth elements in phosphate glass

et al. 2017

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In this work, rare earthdoped phosphate glasses were synthesized and characterized using three different spectroscopic techniques. The absorption spectra of the prepared praseodymium (Pr) and samarium (Sm) doped glasses, recorded by a UV-VISNIR spectrophotometer, show the characteristic absorption bands of these elements. To confirm this inference, laser induced fluorescence spectra of Pr and Sm were obtained at a laser excitation of 442 nm. Their emission bands are reported here. The elemental analysis of these samples was carried out using a laserinduced breakdown spectroscopy (LIBS) system. Characteristic emission lines of Pr and Sm have been identified and reported by the recorded LIBS spectra of glass samples. Results prove that using these three complimentary spectroscopic techniques (absorption, fluorescence and LIBS), we can meaningfully characterize rare earthdoped glass samples.

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Section: Spectroscopic Identification Of Rare Earth Elements In Phosp...mentioning

confidence: 99%

Spectroscopic identification of rare earth elements in phosphate glass

et al. 2017

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“…To date, the LIBS studies using a compact OMA system have mostly addressed practical applications [ 13 , 14 , 15 ]. The most important and growing application of LIBS using the compact OMA system in LIBS is for stand-off analysis [ 16 , 17 ].…”

Section: Introductionmentioning

confidence: 99%

Characteristics of laser induced breakdown investigated by a compact, nongated optical multichannel analyzer system and its potential application

Idris

Lahna

Ramli

et al. 2020

Heliyon

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Laser induced breakdown is a highly temporally and spatially dynamic phenomenon, normally studied using a highly temporally resolved optical detector system. In this work, a compact, low cost optical multichannel analyzer (OMA) system without a built-in temporal gating device and thus operated under a free running mode was used to investigate the characteristics of laser induced plasma. A Nd-YAG laser beam was used as the excitation source from several samples, namely, copper, zinc, and aluminum plates. The characteristics of the plasma emission produced under various experimental parameters, including the pulse energy, surrounding gas pressure, and collection fiber position, were examined. It was found that the essential features of emission spectra can be investigated even using the ungated, compact OMA system even without a highly temporally resolved gating system. The plasma emission characteristics critically depend on the experimental parameters. A quality emission spectrum, featuring a high intensity with a low background, can be obtained using the ungated, compact OMA system under optimized conditions, namely, a pulse energy of approximately 8 mJ, a surrounding gas pressure of 10 Torr, and a collection fiber position of more than 5 mm above the surface of the sample. The features of the emission spectra detected under optimized conditions are only similar to those obtained using a sophisticated, gated OMA system. The characteristics of the emission spectra are in good agreement with the previous assumption of the shockwave role in plasma excitation. Having quality emission spectra under the optimized conditions, a preliminary practical laser induced breakdown spectroscopy (LIBS) analysis using the ungated, compact OMA system was performed on several samples, such as standard brass, commercial pure gold, and natural stone samples. The aluminum emission lines are strongly detected from the standard brass sample (C1118) containing aluminum at 2.8%. The LIBS system also unequivocally revealed a qualitatively abandoned impurity presence in the purportedly pure commercial gold sample. It also effectively confirmed qualitatively a Cu presence in the blinking spots of the natural stone collected from a traditional mining site in Aceh. This result implies the effectiveness of the LIBS using the ungated, compact OMA system for quick, practical analysis.

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Recent Developments in Standoff Laser‐Induced Breakdown Spectroscopy

Narlagiri

Soma

2023

Laser Induced Breakdown Spectroscopy (LIBS)

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Development of a Stand-off Laser Induced Breakdown Spectroscopy (ST-LIBS) system for the analysis of complex matrices

Cited by 14 publications

References 51 publications

Spectroscopic identification of rare earth elements in phosphate glass

Spectroscopic identification of rare earth elements in phosphate glass

Characteristics of laser induced breakdown investigated by a compact, nongated optical multichannel analyzer system and its potential application

Recent Developments in Standoff Laser‐Induced Breakdown Spectroscopy

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