Laser ablation–laser induced breakdown spectroscopy for the measurement of total elemental concentration in soils

2013 ◽  
Vol 52 (11) ◽  
pp. 2470 ◽  
Author(s):  
Jhon Pareja ◽  
Sebastian López ◽  
Daniel Jaramillo ◽  
David W. Hahn ◽  
Alejandro Molina
Keyword(s):  
Laser Ablation ◽  
Elemental Concentration ◽  
Laser Induced Breakdown Spectroscopy ◽  
Breakdown Spectroscopy ◽  
Ablation Laser ◽  
Laser Induced Breakdown

Investigation on the reduction of self-absorption effects in quantitative analysis using fiber laser ablation laser-induced breakdown spectroscopy

2019 ◽  
Vol 34 (8) ◽  
pp. 1606-1610 ◽  
Author(s):  
Zhang Xiong ◽  
Zhongqi Hao ◽  
Xiangyou Li ◽  
Xiaoyan Zeng
Keyword(s):  
Quantitative Analysis ◽  
Laser Ablation ◽  
Fiber Laser ◽  
Nd:Yag Laser ◽  
Laser Induced Breakdown Spectroscopy ◽  
Breakdown Spectroscopy ◽  
Ablation Laser ◽  
Laser Induced Breakdown

A fiber laser and Nd:YAG laser were utilized to formulate a FLA-LIBS system and reduce self-absorption effects.

Reducing Quantitative Fluctuation of Laser-Induced Breakdown Spectroscopy by Kalman Filtering

2013 ◽  
Vol 333-335 ◽  
pp. 243-247 ◽  
Author(s):  
Lan Xiang Sun ◽  
Zhi Bo Cong ◽  
Yong Xin ◽  
Li Feng Qi ◽  
Yang Li
Keyword(s):  
Kalman Filtering ◽  
Elemental Concentration ◽  
Estimation Error ◽  
Laser Induced Breakdown Spectroscopy ◽  
System State ◽  
Large Signal ◽  
Filtering Method ◽  
Breakdown Spectroscopy ◽  
Laser Induced Breakdown ◽  
Quantitative Results

Laser-induced breakdown spectroscopy (LIBS) is excellent for its potential of online compositional analysis. Large signal fluctuation is the major obstacle of LIBS for quantitative analysis application. A kalman filtering method is proposed to estimate the elemental concentration and smooth the quantitative results. The system state model and the measurement model are deduced. The relation matrix between the measured values and system state is estimated based on calibration curve built on some standard samples, and the measurement noise matrix is estimated by the variance of multiple measurements of the spectral intensity. In order to make Kalman filter follow the changes of elemental concentration, the initial value of the covariance matrix of estimation error is reset as a certain rule. The experimental results show that the Kalman filtering method can greatly reduce the fluctuation of quantitative results and improve the measurement accuracy.

Pre-Ablation Laser Parameters Effect on the Spectral Enhancement of Double Pulsed Laser Induced Breakdown Spectroscopy

2013 ◽  
Vol 40 (8) ◽  
pp. 0815003
Author(s):  
高勋 Gao Xun ◽  
邵妍 Shao Yan ◽  
杜闯 Du Chuang ◽  
赵振明 Zhao Zhenming ◽  
郑权 Zheng Quan ◽  
...  
Keyword(s):  
Pulsed Laser ◽  
Laser Induced Breakdown Spectroscopy ◽  
Laser Parameters ◽  
Breakdown Spectroscopy ◽  
Ablation Laser ◽  
Spectral Enhancement ◽  
Laser Induced Breakdown

Influence of sample temperature on the laser-induced breakdown spectroscopy of a molybdenum–tungsten alloy

2019 ◽  
Vol 34 (12) ◽  
pp. 2378-2384 ◽  
Author(s):  
Ran Hai ◽  
Zhonglin He ◽  
Ding Wu ◽  
Weina Tong ◽  
Harse Sattar ◽  
...  
Keyword(s):  
Laser Ablation ◽  
Electron Density ◽  
Emission Intensity ◽  
Plasma Temperature ◽  
Sample Temperature ◽  
Tungsten Alloy ◽  
Laser Induced Breakdown Spectroscopy ◽  
Spectral Emission ◽  
Breakdown Spectroscopy ◽  
Laser Induced Breakdown

During laser ablation, the spectral emission intensity, plasma temperature and electron density increased significantly with increasing sample temperature.

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