scholarly journals 3-Dimensional analysis of layer structured samples with high depth resolution using picosecond laser-induced breakdown spectroscopy

2020 ◽  
Vol 532 ◽  
pp. 147185 ◽  
Author(s):  
Rongxing Yi ◽  
Dongye Zhao ◽  
Jannis Oelmann ◽  
Sebastijan Brezinsek ◽  
Marcin Rasinski ◽  
...  
Keyword(s):  
Dimensional Analysis ◽  
Picosecond Laser ◽  
Depth Resolution ◽  
Laser Induced Breakdown Spectroscopy ◽  
3 Dimensional ◽  
Breakdown Spectroscopy ◽  
Laser Induced Breakdown ◽  
High Depth

Highly depth-resolved characterization of fusion-related tungsten material based on picosecond laser-induced breakdown spectroscopy

2020 ◽  
Vol 35 (12) ◽  
pp. 2867-2879
Author(s):  
Dongye Zhao ◽  
Ding Wu ◽  
Jannis Oelmann ◽  
Sebastijan Brezinsek ◽  
Qingmei Xiao ◽  
...  
Keyword(s):  
Nuclear Fusion ◽  
Picosecond Laser ◽  
Laser Induced Breakdown Spectroscopy ◽  
Breakdown Spectroscopy ◽  
Laser Induced Breakdown ◽  
Potential Applications ◽  
Tungsten Material

The objective of the present study has been to evaluate the potential applications of picosecond laser-induced breakdown spectroscopy (ps-LIBS) in nuclear fusion devices.

scholarly journals Application of picosecond laser-induced breakdown spectroscopy to quantitative analysis of boron in meatballs and other biological samples

2016 ◽  
Vol 55 (32) ◽  
pp. 8986 ◽  
Author(s):  
Rinda Hedwig ◽  
Kurnia Lahna ◽  
Zener Sukra Lie ◽  
Marincan Pardede ◽  
Koo Hendrik Kurniawan ◽  
...  
Keyword(s):  
Quantitative Analysis ◽  
Biological Samples ◽  
Picosecond Laser ◽  
Laser Induced Breakdown Spectroscopy ◽  
Breakdown Spectroscopy ◽  
Laser Induced Breakdown

scholarly journals Time-Gated Single-Shot Picosecond Laser-Induced Breakdown Spectroscopy (ps-LIBS) for Equivalence-Ratio Measurements

2020 ◽  
Vol 74 (3) ◽  
pp. 340-346 ◽  
Author(s):  
Mark Gragston ◽  
Paul Hsu ◽  
Anil Patnaik ◽  
Zhili Zhang ◽  
Sukesh Roy
Keyword(s):  
High Pressure ◽  
Atmospheric Pressure ◽  
Equivalence Ratio ◽  
Laser Energy ◽  
Picosecond Laser ◽  
Laser Induced Breakdown Spectroscopy ◽  
Single Shot ◽  
Plasma Emission ◽  
Breakdown Spectroscopy ◽  
Laser Induced Breakdown

Time-gated picosecond laser-induced breakdown spectroscopy (ps-LIBS) for the determination of local equivalence ratios in atmospheric-pressure adiabatic methane–air flames is demonstrated. Traditional LIBS for equivalence-ratio measurements employ nanosecond (ns)-laser pulses, which generate excessive amounts of continuum, reducing measurement accuracy and precision. Shorter pulse durations reduce the continuum emission by limiting avalanche ionization. Furthermore, by contrast the use of femtosecond lasers, plasma emission using picosecond-laser excitation has a high signal-to-noise ratio (S/N), allowing single-shot measurements suitable for equivalence-ratio determination in turbulent reacting flows. We carried out an analysis of the dependence of the plasma emission ratio Hα (656 nm)/NII (568 nm) on laser energy and time-delay for optimization of S/N and minimization of measurement uncertainties in the equivalence ratios. Our finding shows that higher laser energy and shorter time delay reduces measurement uncertainty while maintaining high S/N. In addition to atmospheric-pressure flame studies, we also examine the stability of the ps-LIBS signal in a high-pressure nitrogen cell. The results indicate that the plasma emission and spatial position could be stable, shot-to-shot, at elevated pressure (up to 40 bar) using a lower excitation energy. Our work shows the potential of using ps-duration pulses to improve LIBS-based equivalence-ratio measurements, both in atmospheric and high-pressure combustion environments.

Simultaneous 3-dimensional elemental imaging with LIBS and LA-ICP-MS

2014 ◽  
Vol 29 (7) ◽  
pp. 1292-1298 ◽  
Author(s):  
Jose R. Chirinos ◽  
Dayana D. Oropeza ◽  
Jhanis J. Gonzalez ◽  
Huaming Hou ◽  
Mark Morey ◽  
...  
Keyword(s):  
Inductively Coupled Plasma ◽  
Major And Trace Elements ◽  
Laser Induced Breakdown Spectroscopy ◽  
3 Dimensional ◽  
Inductively Coupled ◽  
Breakdown Spectroscopy ◽  
Spatially Resolved ◽  
Icp Ms ◽  
Laser Induced Breakdown ◽  
Plasma Mass Spectrometry

Laser Induced Breakdown Spectroscopy (LIBS) and Laser Ablation Inductively Coupled Plasma-Mass Spectrometry (LA-ICP-MS) are used simultaneously for spatially resolved mapping of major and trace elements and isotopes within aBastnäsiterare earth ore sample.

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