Laser ablation is based on removal of material by intense laser irradiation [1]. The interaction ... more Laser ablation is based on removal of material by intense laser irradiation [1]. The interaction of high-intensity laser pulses with a solid target involves plasma formation. The emission spectroscopy of the plasma produced in laser ablation at high power densities is called laser-induced breakdown spectroscopy (LIBS) [2]. Laser induced plasma and the crater formation on the material are strongly depend on irradiation condition such as incident laser properties (beam intensity, pulse duration, energy, wavelength, irradiation spot size), solid target properties and surrounding environment's condition [3]. The results of the laser-solid interaction will be presented. In this study, nanosecond Nd:YAG laser is used with different irradiation parameters. Lines emitted from the plasma formed during the laser ablation of Titanium in air at atmospheric pressure have been measured. Mass ablation rate has been investigated at different laser pulses energy and at different laser wavelengths.
Kidney stones were analyzed using laser-induced breakdown spectroscopy (LIBS), utilizing a high r... more Kidney stones were analyzed using laser-induced breakdown spectroscopy (LIBS), utilizing a high resolution multi-channel charge-coupled device (CCD) spectrometer and a nanosecond-pulse Nd: YAG laser. The kidney stones were also characterized using X-ray diffraction (XRD) and X-ray fluorescence (XRF) techniques for comparative analysis. It was found that the ratio of hydrogen (H) to carbon (C) was an important indicator of organic compounds such as uric acid. Advantages of LIBS, especially with regards to amount of sample required and sample preparation as well as the ability to carry out elemental analysis and classification of kidney stones simultaneously, over other analytical techniques such as XRD and XRF are discussed. The common minor elements detected in the kidney stones include P, S, Si, Ti, and Zn. Principal component analysis (PCA) and partial least squares discriminant analysis (PLS-DA) of broadband LIBS spectra were employed for classifying different types of kidney sto...
Laser ablation is based on removal of material by intense laser irradiation [1]. The interaction ... more Laser ablation is based on removal of material by intense laser irradiation [1]. The interaction of high-intensity laser pulses with a solid target involves plasma formation. The emission spectroscopy of the plasma produced in laser ablation at high power densities is called laser-induced breakdown spectroscopy (LIBS) [2]. Laser induced plasma and the crater formation on the material are strongly depend on irradiation condition such as incident laser properties (beam intensity, pulse duration, energy, wavelength, irradiation spot size), solid target properties and surrounding environment's condition [3]. The results of the laser-solid interaction will be presented. In this study, nanosecond Nd:YAG laser is used with different irradiation parameters. Lines emitted from the plasma formed during the laser ablation of Titanium in air at atmospheric pressure have been measured. Mass ablation rate has been investigated at different laser pulses energy and at different laser wavelengths.
Kidney stones were analyzed using laser-induced breakdown spectroscopy (LIBS), utilizing a high r... more Kidney stones were analyzed using laser-induced breakdown spectroscopy (LIBS), utilizing a high resolution multi-channel charge-coupled device (CCD) spectrometer and a nanosecond-pulse Nd: YAG laser. The kidney stones were also characterized using X-ray diffraction (XRD) and X-ray fluorescence (XRF) techniques for comparative analysis. It was found that the ratio of hydrogen (H) to carbon (C) was an important indicator of organic compounds such as uric acid. Advantages of LIBS, especially with regards to amount of sample required and sample preparation as well as the ability to carry out elemental analysis and classification of kidney stones simultaneously, over other analytical techniques such as XRD and XRF are discussed. The common minor elements detected in the kidney stones include P, S, Si, Ti, and Zn. Principal component analysis (PCA) and partial least squares discriminant analysis (PLS-DA) of broadband LIBS spectra were employed for classifying different types of kidney sto...
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