A5052804747- Laser-induced spectroscopy and plasma
- Thermography and Photoacoustic Techniques
- Analytical chemistry methods development
- Photoacoustic and Ultrasonic Imaging
- Atomic and Molecular Physics
- Diamond and Carbon-based Materials Research
- Ion-surface interactions and analysis
- Laser Design and Applications
- Laser-Ablation Synthesis of Nanoparticles
- Cultural Heritage Materials Analysis
- Laser-Plasma Interactions and Diagnostics
- Plasma Diagnostics and Applications
- Ultrasonics and Acoustic Wave Propagation
- Laser Material Processing Techniques
- Spectroscopy and Chemometric Analyses
- Advanced Sensor Technologies Research
- Luminescence Properties of Advanced Materials
- Gold and Silver Nanoparticles Synthesis and Applications
- Surface Roughness and Optical Measurements
- Experimental and Theoretical Physics Studies
- Mass Spectrometry Techniques and Applications
- Astro and Planetary Science
- Water Quality Monitoring and Analysis
- Advanced biosensing and bioanalysis techniques
- Plasma Applications and Diagnostics
Universidad Nacional Autónoma de México
2014-2023
Universidad del Valle
2023
Centro de Investigaciones Cardiovasculares
2010
Centro de Investigación y Desarrollo
2004
Centro Nacional de Investigación y Desarrollo Tecnológico
2003
Instituto Nacional de Investigaciones Nucleares
1999
The temporal evolution of electric breakdown in air at atmospheric pressure by Nd:yttrium–aluminum–garnet Q-switched nanosecond laser pulses was studied from the to millisecond time scale shadowgraphy and interferometry techniques. results were modeled with a gasdynamic code good agreement. It possible simultaneously model whole plasma, shock wave, hot core air. wave velocity determined be ⩾60 km s−1 20 ns. plasma temperature found reach about 1.7×104 K 1 μs <103 100 μs. This letter...
We present a new application of charged coupled device (CCD), where continuous-wave (CW) laser is used as probe beam in shadowgraphy and interferometric diagnosis transparent media the refractive index varies time. The time resolution obtained by gating CCD. This configuration has advantage that temporal both techniques can be changed according to evolution process under study no stability setup required, usual, CW techniques. applied this method induced plasma (LIP) air measuring plasma,...
In this paper we present a new method for determining the self-absorption coefficients of emission lines in laser-induced breakdown spectroscopy (LIBS) experiments. With respect to other methods already literature, proposed approach has advantage not requiring, providing some conditions are fulfilled, any knowledge plasma parameters such as temperature and electron number density line spectral transition probability. An example application is given measured at different delay times after...
We studied the effect of repetition rate laser pulses (RRLP) in range from 1–10 Hz production silver nanoparticles (Ag-NPs) by ablation ethanol. Laser with a duration 7 ns, wavelength 1064 nm and an energy 60 mJ were used to ablate 99.99% pure target immersed 10 ml Transmittance analysis atomic absorption spectroscopy study concentration colloidal solutions. The process was measuring transmission through colloid. It is shown that for fixed number (NLP) efficiency, terms ablated mass per...
We show that the photoacoustic signals generated at high reflection mirror of a pulsed laser depend linearly on output energy. This allows us to measure acoustically energy, tuning range, and optimum temperature concentration dye laser, with advantage there is no interference beam, as case optical measurements.
We report an experimental assessment of the contributions shockwave and hot channel to production nitric oxide by simulated lightning. Lightning in laboratory was a plasma generated with pulsed Nd‐YAG laser. The temporal evolution electric breakdown air at atmospheric pressure studied from nanosecond millisecond time scale shadowgraphy interferometry techniques. front velocity determined be about 60 km s −1 20 ns temperature behind shock estimated 10 5 K. yield heating is be: P(NO) (3±2) ×...
Abstract Platelets of both healthy and hypertensive subjects were analyzed by Raman Fourier transform infrared attenuated total reflectance (FTIR‐ATR) spectroscopies. We compared the average relative intensities main peaks, areas convoluted bands in amide I region, second derivative FTIR‐ATR spectra. Key differences found reflecting lipid content protein structure. The spectra exhibited statistically significant changes intensity associated with CC stretching vibrations carbon chains lipids...
The perturbation produced by pulsed laser generated discharge in an electric field is studied as a tool for breakdown characterization. A focused high-power induces air or solid target, that placed between the plates of planar charged capacitor. induced generates temporal redistribution electrical charges on can be easily measured resistor connected to ground plate. This signal depends energy used generate breakdown, capacitor applied voltage, and distance plates. In this work, we show...
Views Icon Article contents Figures & tables Video Audio Supplementary Data Peer Review Share Twitter Facebook Reddit LinkedIn Tools Reprints and Permissions Cite Search Site Citation C. Sánchez Aké, R. Sanginés de Castro, H. Sobral, M. Villagrán-Muniz; Plume dynamics of cross-beam pulsed-laser ablation graphite. Journal Applied Physics 1 September 2006; 100 (5): 053305. https://doi.org/10.1063/1.2337879 Download citation file: Ris (Zotero) Reference Manager EasyBib Bookends Mendeley Papers...
The LiNbO(3) congruent crystals doped with small Nd concentrations, <1 mol% Nd, and co-doped Mg ions, 0-9 Mg, were systematically investigated by means of micro-Raman spectroscopy in the Y Z crystal directions. Results obtained from an undoped crystal, Nd-doped a Mg-doped Mg-co-doped are compared. From analyses results direction, content dependence two lowest-Raman A(1)(TO(1)) A(1)(TO(2)) modes, half-width composition area ratio A(1)(TO(4)) E(TO(8)) bands, we reached several conclusions...