Microplasmas produced with sub-millijoule laser pulses for laser induced breakdown spectroscopy

2002 ◽  
Author(s):  
G.W. Rieger ◽  
M. Taschuk ◽  
Y.Y. Tsui ◽  
R. Fedosejevs
Keyword(s):  
Laser Pulses ◽  
Laser Induced Breakdown Spectroscopy ◽  
Breakdown Spectroscopy ◽  
Laser Induced Breakdown

Analysis of Enhanced Laser-Induced Breakdown Spectroscopy with Double Femtosecond Laser Pulses

2015 ◽  
Vol 17 (2) ◽  
pp. 147-152 ◽  
Author(s):  
Jie Shen ◽  
Zhengcai Yang ◽  
Xiaoliang Liu ◽  
Yanchao Shi ◽  
Peixi Zhao ◽  
...  
Keyword(s):  
Femtosecond Laser ◽  
Laser Pulses ◽  
Femtosecond Laser Pulses ◽  
Laser Induced Breakdown Spectroscopy ◽  
Breakdown Spectroscopy ◽  
Laser Induced Breakdown

scholarly journals Feasibility Study on Discrimination of Neo-plastic and Non-Neoplastic Gastric Tissues Using Spark Discharge Assisted Laser Induced Breakdown Spectroscopy

2018 ◽  
Vol 10 (1) ◽  
pp. 64-69 ◽  
Author(s):  
Aida Seifalinezhad ◽  
Maryam Bahreini ◽  
Mohammad Mahdi Hassani Matin ◽  
Seyed Hassan Tavassoli
Keyword(s):  
Light Emission ◽  
In Vitro Study ◽  
Cost Effective ◽  
Laser Pulses ◽  
Spark Discharge ◽  
Plasma Radiation ◽  
Laser Induced Breakdown Spectroscopy ◽  
Breakdown Spectroscopy ◽  
Laser Induced Breakdown

Introduction: The present work is a novel in vitro study that evaluated the possibility of diagnosing neoplastic from nonneoplastic gastric tissues using spark discharge assisted laser induced breakdown spectroscopy (SD-LIBS) method. Methods: In these experiments, the low energy laser pulses ablated a tiny amount of tissue surface leading to plasma formation. Then, a spark discharge was applied to plasma in order to intensify the plasma radiation. Light emission from plasma was recorded as spectra which were analyzed. Gastric tissues of 5 people were studied through this method. Results: The SD-LIBS technique had the potential to discriminate normal and cancerous tissues based on the significant differences in the intensities of some particular elements. The comparison of normalized calcium (Ca) and magnesium (Mg) peaks of neoplastic and nonneoplastic gastric tissues could be viewed as a practical measure for tissue discrimination since Ca and Mg peaks in spectra of neoplastic were noticeably higher than nonneoplastic. Conclusion: Considering the identification of gastric cancer, the applied method in these experiments seems quite fast, noninvasive and cost-effective with respect to other conventional methods. The significant increment of specific Ca and Mg lines of neoplastic gastric tissues in comparison to the nonneoplastic ones can be considered as valuable information that might bring about tissue classification. The number of samples in this work, however, was not sufficient for a decisive conclusion and further researches is needed to generalize this idea.

Laser-induced breakdown spectroscopy using laser pulses delivered by optical fibers for analyzing Mn and Ti elements in pig iron

2015 ◽  
Vol 30 (2) ◽  
pp. 403-409 ◽  
Author(s):  
Qingdong Zeng ◽  
Lianbo Guo ◽  
Xiangyou Li ◽  
Chao He ◽  
Meng Shen ◽  
...  
Keyword(s):  
Optical Fibers ◽  
Laser Pulses ◽  
Laser Induced Breakdown Spectroscopy ◽  
Pig Iron ◽  
Breakdown Spectroscopy ◽  
System P ◽  
Laser Induced Breakdown

A portable FO-LIBS system can achieve comparable results with the conventional LIBS system.

scholarly journals Analytical Studies of Polychromes by Time-Integrated Laser-Induced Breakdown Spectroscopy

1999 ◽  
Vol 18 (3) ◽  
pp. 155-165 ◽  
Author(s):  
Margarita Martin ◽  
Marta Castillejo ◽  
Ricardo Torres ◽  
Diego Silva
Keyword(s):  
Analytical Study ◽  
Near Infrared ◽  
Laser Pulses ◽  
Laser Induced Breakdown Spectroscopy ◽  
Breakdown Spectroscopy ◽  
Two Samples ◽  
Laser Induced Breakdown ◽  
Spanish Baroque ◽  
Spectral Intensities ◽  
Negligible Contribution

Time integrated Laser Induced Breakdown Spectroscopy was applied to the study of real samples of polychromes. Two samples respectively from the Spanish Baroque and from the XV century were analysed. The time integrated spectra showed negligible contribution of continuum background emission. The spectra of the Baroque sample indicated the presence of vermilion; this was confirmed by Near Infrared Fourier Transform Spectroscopy. LIBS spectra of the XV century sample showed Ca, Al, Mg, Na and Pb lines and the molecular emissions CN(B-X) and C2(d-a). Relative spectral intensities were measured as a function of the number of laser pulses delivered on the same position of the sample. The LIBS analysis was compared to an exhaustive analytical study.

scholarly journals Inverse Calibration Free fs-LIBS of Copper-Based Alloys

2016 ◽  
Vol 230 (9) ◽  
Author(s):  
Antonella Smaldone ◽  
Angela De Bonis ◽  
Agostino Galasso ◽  
Ambra Guarnaccio ◽  
Antonio Santagata ◽  
...  
Keyword(s):  
Laser Pulses ◽  
Laser Induced Breakdown Spectroscopy ◽  
Breakdown Spectroscopy ◽  
Laser Induced Breakdown ◽  
Fs Laser ◽  
Calibration Free ◽  
Inverse Calibration ◽  
Nd:Glass Laser

AbstractIn this work the analysis by Laser Induced Breakdown Spectroscopy (LIBS) technique of copper-based alloys having different composition and performed with fs laser pulses is presented. A Nd:Glass laser (Twinkle Light Conversion,

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