Article
Physics, Multidisciplinary
J. Oelmann, E. Wuest, G. Sergienko, S. Brezinsek
Summary: This study introduces two setups with different laser pulse properties and excitation geometries for post-mortem plasma-facing component analyses. Compared to single pulse, double pulse laser-induced breakdown spectroscopy shows enhancement factors and changes in spectral line shapes.
Article
Optics
Changming Li, Qiuyun Wang, Anmin Chen, Xun Gao
Summary: In this study, the influence of the delay between femtosecond and nanosecond pulses in a double-pulse laser scheme on molecular emission in LIBS was experimentally investigated. The results showed that the spectral emission was not significantly affected by the delay. The signal-to-background ratio (SBR) excited by the femtosecond-nanosecond scheme was higher than that excited by the nanosecond-femtosecond scheme, making it suitable for spectral analysis.
Article
Optics
Luis V. Ponce Cabrera, T. Flores Reyes, Yohan Perez Moret, Fernando C. Alvira
Summary: This technical note presents the results of employing a new temporary synchronization device to the study of laser-induced plasma spectroscopy in a multi-pulse regime. By controlling the time delay and reading window of the spectrometer, users can distinguish emissions from independent micro-pulses and optimize the reading of spectra.
Article
Environmental Sciences
Carla Pereira De Morais, Diego Victor Babos, Vinicius Camara Costa, Jordan Brizi Neris, Gustavo Nicolodelli, Milene Corso Mitsuyuki, Frederico Fabio Mauad, Stephane Mounier, Debora Marcondes Bastos Pereira Milori
Summary: Double pulse laser-induced breakdown spectroscopy (DP LIBS) has been studied for the quantitative analysis of trace elements in sediments. Different spectral treatments and calibration strategies were investigated to improve the accuracy of determinations. The developed models showed satisfactory sensitivity and precision for the quantification of these potentially toxic elements, allowing for a partial ecological risk assessment of the sediments.
SCIENCE OF THE TOTAL ENVIRONMENT
(2022)
Article
Chemistry, Analytical
Wei Wang, Lanxiang Sun, Peng Zhang, Liming Zheng, Lifeng Qi
Summary: The study investigated the reduction of self-absorption in the spectrum using double-pulse laser-induced breakdown spectroscopy, finding that the gas environment generated by the first laser beam affects the self-absorption effect of the plasma spectrum. It was observed that the spectral self-absorption effect is weakest at specific double-pulse delays for different elements, and that the double-pulse delay and the first laser beam energy have a strong correlation with the self-absorption effect.
MICROCHEMICAL JOURNAL
(2022)
Article
Spectroscopy
Santiago Palanco, Raul Perez-Lopez, Ines Galindo-Jimenez, Alberto Bernal, Sergio Aranda, Maria Cruz Lopez-Escalante, Dietmar Leinen, Jose F. Mediato, Julio Lopez-Gutierrez, Jose R. Ramos-Barrado
Summary: This paper reports on a field expedition conducted in November 2021 at the Cumbre Vieja volcano in the Canary Islands, Spain. The study used stand-off laser-induced breakdown spectroscopy to measure real-time lava streams and employed a statistical approach for data processing to provide a robust classification tool.
SPECTROCHIMICA ACTA PART B-ATOMIC SPECTROSCOPY
(2022)
Article
Spectroscopy
Yinhua Jiang, Runhua Li, Yuqi Chen
Summary: The target-enhanced orthogonal double-pulse laser-induced breakdown spectroscopy (TEODP-LIBS) technique significantly enhances the optical emission intensity of sample elements for sensitive elemental analysis of alloy samples. By selecting a dielectric target material, spectral interference can be reduced and detection limits can be improved.
SPECTROCHIMICA ACTA PART B-ATOMIC SPECTROSCOPY
(2021)
Article
Instruments & Instrumentation
Zhenzhen Wang, Kai Rong, Seiya Tanaka, Yoshihiro Deguchi, Minchao Cui, Junjie Yan
Summary: The LS-DP-LIBS method was used for qualitative and quantitative analyses of underwater steel samples to enhance detection ability. Stable plasma intensity and discrete emission lines were observed when compared with SP-LIBS, indicating improved plasma stability and signal intensity with optimal pulse width and delay time conditions. Quantitative analysis of Mn contents in steel samples showed strong linear dependence, demonstrating the feasibility of LS-DP-LIBS for underwater measurement.
APPLIED SPECTROSCOPY
(2021)
Article
Spectroscopy
Zhi Zhang, Jian Wu, Yuhua Hang, Ying Zhou, Zhijie Tang, Mingxin Shi, Yan Qiu, Kaixing Liao, Tao Liu, Xingwen Li
Summary: A collinear dual-pulse LIBS system was developed to detect chlorine in cement, with key parameters optimized to improve detection sensitivity. The results show that the signal-to-noise ratio of chlorine emission was significantly improved in the optimized system.
SPECTROCHIMICA ACTA PART B-ATOMIC SPECTROSCOPY
(2022)
Article
Instruments & Instrumentation
David M. Surmick, Leon Taleh, Noureddine Melikechi
Summary: The impact of altering laser focusing conditions on laser-induced breakdown spectroscopy experiments was investigated in both ambient Earth laboratory and simulated Martian atmospheres. Results showed that the peak emissions of ionic species occur when the laser plasma is initiated with a focused spot within the sample in ambient Earth laboratory air, while atomic emissions have peak intensities several millimeters deeper into the sample. In simulated Martian atmospheres, atomic emissions peak when the laser is focused within the sample, while ionic emissions have peak intensities near the surface of the sample.
APPLIED SPECTROSCOPY
(2021)
Article
Spectroscopy
Yinhua Jiang, Zehao Lin, Runhua Li, Yuqi Chen
Summary: The analytical sensitivity of conventional ODP-LIBS was improved significantly using a solid target, with enhanced optical emissions of analytes through interaction between target and sample plasma. The technique demonstrated good performance in quantitatively analyzing copper and lead in water samples, achieving detection limits of 49 ng/mL and 180 ng/mL respectively, with enhancement factors of 4.5 and 3.8 compared to ODP-LIBS without target enhancement.
SPECTROCHIMICA ACTA PART B-ATOMIC SPECTROSCOPY
(2021)
Article
Chemistry, Analytical
Nan Li, Naoya Nishi, Ronger Zheng, Tetsuo Sakka
Summary: The study reveals that short pulses create weak emission plasma with short lifespan, while long pulses generate strong emission with longer lifespan. Long pulses can increase the spectral line intensity by more than 6 times for high-energy transition levels, allowing for detection of clear atomic lines of oxygen in water.
JOURNAL OF ANALYTICAL ATOMIC SPECTROMETRY
(2021)
Article
Chemistry, Analytical
Ismail Elhamdaoui, Nessrine Mohamed, Samira Selmani, Paul Bouchard, Mohamad Sabsabi, Marc Constantin, Francois Vidal
Summary: This paper discusses the use of conventional LIBS and LIBS-LIF techniques for measuring trace amounts of palladium in solid ore samples. The study optimized the performances of LIBS-LIF for spectrochemical analysis of palladium by studying the combination of excitation/fluorescence of Pd lines and plasma creation conditions. Calibration curves were established using reference materials doped with a palladium solution. The results demonstrated that LIBS-LIF could rapidly measure sub-ppm levels of palladium in solid ore samples without any sample preparation, and it could resolve the spectral interference which is problematic with conventional LIBS.
JOURNAL OF ANALYTICAL ATOMIC SPECTROMETRY
(2022)
Article
Chemistry, Analytical
Kaikai Kou, Weiran Song, Weilun Gu, Jiacen Liu, Yuzhou Song, Jianxun Ji, Zongyu Hou, Zhe Wang
Summary: The multi-element detectable laser excited atomic fluorescence (LEAF) technique is a significant advancement in the analytical field with its high sensitivity and overcoming the color constraint. However, limited understanding of the universal signal enhancement mechanism hinders its further development and research. This study conducted LEAF experiments to investigate the details of the ablation process, excitation process, and coupling behavior. The findings propose new understandings, such as the ablated mass being plasma instead of just a plume and the contribution of photoexcitation to the enhanced signal.
JOURNAL OF ANALYTICAL ATOMIC SPECTROMETRY
(2023)
Article
Chemistry, Physical
N. Giannakaris, P. Siozos, V. Pinon, S. P. Banerjee, M. Sentis, J. D. Pedarnig, D. Anglos
Summary: In this study, we demonstrate the use of UV femtosecond single-pulse and double-pulse laser-induced breakdown spectroscopy (LIBS) as an effective method for depth profiling of nanometer-thick multilayered structures. The femtosecond LIBS technique enables selective detection of organic and inorganic materials at different depths within the samples. By applying the double-pulse LIBS technique, the analytical capabilities of the method are enhanced and the emission intensity is increased.
APPLIED SURFACE SCIENCE
(2023)
Article
Physics, Multidisciplinary
Yong Xin, Lan-Xiang Sun, Zhi-Jia Yang, Peng Zeng, Zhi-Bo Cong, Li-Feng Qi
FRONTIERS OF PHYSICS
(2016)
Article
Chemistry, Analytical
P. Zhang, L. X. Sun, H. B. Yu, P. Zeng, L. F. Qi, Y. Xin
JOURNAL OF ANALYTICAL ATOMIC SPECTROMETRY
(2017)
Article
Spectroscopy
Lanxiang Sun, Haibin Yu, Zhibo Cong, Hui Lu, Bin Cao, Peng Zeng, Wei Dong, Yang Li
SPECTROCHIMICA ACTA PART B-ATOMIC SPECTROSCOPY
(2018)
Article
Metallurgy & Metallurgical Engineering
Lan-xiang Sun, Wei-ye Wang, Mei-ting Guo, Xue-yong Tian, Peng Zhang, Li-feng Qi, Hai-bin Yu, Peng Zeng
JOURNAL OF IRON AND STEEL RESEARCH INTERNATIONAL
(2019)
Article
Chemistry, Analytical
Zunji Lv, Hongxia Yu, Lanxiang Sun, Peng Zhang
Summary: This study explores the rapid analysis of key elements in ceramic raw materials using laser-induced breakdown spectroscopy (LIBS). The combination of linear regression and sparse autoencoder effectively reduces the overfitting problem and establishes a quantitative analysis model for the elemental composition of ceramic raw materials.
ANALYTICAL METHODS
(2022)
Article
Chemistry, Analytical
Haiyan Dong, Lanxiang Sun, LiFeng Qi, HaiBin Yu, Peng Zeng
Summary: Monitoring phosphorus content in the flotation process of phosphate ore slurry is crucial, and using the L-CNN spectra model can improve the accuracy of quantitative analysis, outperforming other models.
JOURNAL OF ANALYTICAL ATOMIC SPECTROMETRY
(2021)
Article
Chemistry, Analytical
Wei Wang, Lanxiang Sun, Peng Zhang, Tong Chen, Liming Zheng, Lifeng Qi
Summary: The study found that matrix effects have different degrees of impact on the analysis line under different experimental parameters, and the impact of matrix effects can be reduced by adjusting the laser defocusing amount and spectrometer delay. Additionally, using the spectrum generated by the pure sample as the matrix background can reduce the interference of matrix effects.
JOURNAL OF ANALYTICAL ATOMIC SPECTROMETRY
(2021)
Article
Chemistry, Analytical
Wei Wang, Lanxiang Sun, Guodong Wang, Peng Zhang, Lifeng Qi, Liming Zheng, Wei Dong
JOURNAL OF ANALYTICAL ATOMIC SPECTROMETRY
(2020)
Proceedings Paper
Optics
P. Zhang, L. X. Sun, H. Y. Kong, H. B. Yu, M. T. Guo, P. Zeng
AOPC 2017: OPTICAL SPECTROSCOPY AND IMAGING
(2017)
Proceedings Paper
Automation & Control Systems
Xianhong Li, Haibin Yu, Peng Zeng, Lanxiang Sun, Chuanzhi Zang, Mingzhe Yuan
PROCEEDINGS OF THE 2016 12TH WORLD CONGRESS ON INTELLIGENT CONTROL AND AUTOMATION (WCICA)
(2016)
Proceedings Paper
Automation & Control Systems
X. H. Li, H. B. Yu, P. Zeng, L. X. Sun, M. Z. Yuan, C. Z. Zang, J. Bian
PROCEEDINGS OF THE 28TH CHINESE CONTROL AND DECISION CONFERENCE (2016 CCDC)
(2016)
Article
Spectroscopy
Xin Yong, Sun Lan-xiang, Yang Zhi-jia, Li Yang, Cong Zhi-bo, Qi Li-feng, Zhang Peng, Zeng Peng
SPECTROSCOPY AND SPECTRAL ANALYSIS
(2016)
Article
Spectroscopy
Kong Hai-yang, Sun Lan-xiang, Hu Jing-tao, Zhang Pang
SPECTROSCOPY AND SPECTRAL ANALYSIS
(2016)
Proceedings Paper
Computer Science, Artificial Intelligence
Zhang Tong, Li Xianhong, Yu Haibin, Liu Jianchang, Zeng Peng, Sun Lanxiang
2015 7TH INTERNATIONAL CONFERENCE ON INTELLIGENT HUMAN-MACHINE SYSTEMS AND CYBERNETICS IHMSC 2015, VOL I
(2015)
Proceedings Paper
Automation & Control Systems
Xianhong Li, Haibin Yu, Peng Zeng, Chuanzhi Zang, Lanxiang Sun, Mingzhe Yuan
2015 IEEE INTERNATIONAL CONFERENCE ON CYBER TECHNOLOGY IN AUTOMATION, CONTROL, AND INTELLIGENT SYSTEMS (CYBER)
(2015)
