A5014701328- Laser-induced spectroscopy and plasma
- Atomic and Molecular Physics
- Plasma Diagnostics and Applications
- Mass Spectrometry Techniques and Applications
- Spectroscopy and Laser Applications
- Advanced Chemical Physics Studies
- Atmospheric Ozone and Climate
- Experimental Learning in Engineering
- Experimental and Theoretical Physics Studies
- Plasma Applications and Diagnostics
- Mobile Learning in Education
- Educational Practices and Sociocultural Research
- Magnetic confinement fusion research
- Laser Design and Applications
- Stellar, planetary, and galactic studies
- Electrohydrodynamics and Fluid Dynamics
- Spectroscopy and Quantum Chemical Studies
- Quantum optics and atomic interactions
- Astronomy and Astrophysical Research
- Educational Innovations and Technology
- Spectroscopy Techniques in Biomedical and Chemical Research
- Astro and Planetary Science
- Ion-surface interactions and analysis
- Atomic and Subatomic Physics Research
- E-Learning and Knowledge Management
Universidad de Valladolid
2014-2023
University of Calgary
2022
Weizmann Institute of Science
2014
Ente Vasco de la Energía
2008
Institut Fresnel
2008
Centre National de la Recherche Scientifique
2008
Institute of Spectroscopy
2008
University of Florida
2008
Kurchatov Institute
2008
Western Michigan University
2008
Electron density is one of the key parameters in physics a gas discharge. In this contribution application Stark broadening method to determine electron low temperature atmospheric pressure plasma jets discussed. An overview available theoretical calculations hydrogenated and non-hydrogenated atomic lines presented. The difficulty evaluation fine structure splitting lines, which important at density, analysed recommendations on applicability for ionization degree plasmas are given. Different...
Dc-excited discharges generated in water at the tip of a tungsten wire which is located orifice quartz capillary are investigated by time-averaged optical emission spectroscopy.
In this contribution, optical emission spectroscopy is evaluated and thoroughly analysed as a diagnostic to characterize plasmas in contact with liquids. One of the specific properties liquids strong OH(A–X) hydrogen lines. As an example 600 ns pulsed dc excited discharge Ar, He O2 bubbles water investigated by time resolved spectroscopy. It shown that production processes species plasma kinetics strongly influence spectrum. This complicates interpretation spectra but provides opportunity...
The characteristics of plasma temperatures (gas temperature and electron excitation temperature) density in a pulsed-dc excited atmospheric helium jet are studied by relative absolute optical emission spectroscopy (OES). High-resolution OES is performed for the hydrogen lines determination through Stark broadening mechanism. A superposition fitting method composed two component profiles corresponding to different densities developed fit investigated lines. Electron orders magnitude 1021 1020...
The use of mobile technologies is reshaping how to teach and learn. In this paper the authors describe their research on these physics. On one hand they develop applications complement traditional learning help students learn anytime anywhere. has proved have very positive influence students' engagement. other hand, smartphones as measurement devices in physics experiments. This opens possibility designing developing low cost laboratories where expensive material can be substituted by...
Modeling the Stark broadening of spectral lines in plasmas is a complex problem. The problem has long history, since it plays crucial role interpretation observed laboratories and astrophysical plasmas. One difficulty characterization emitter’s environment. Although several models have been proposed over years, there no systematic studies results, until now. Here, calculations from stochastic numerical simulations are compared for Atoms 2014, 2 300 Lyman-α -β neutral hydrogen. Also discussed...
Experimental measurements of the center ${\mathrm{H}}_{\ensuremath{\beta}}$ Stark profile on three different installations have been done to study its asymmetry in wide ranges electron density, temperature, and plasma conditions. Theoretical calculations for analysis experimental results performed using standard theory computer simulations included separately quadrupolar quadratic effects. Earlier theoretical other authors reviewed as well. The are well reproduced by at high moderate densities.
A very fast method for calculating line shapes in the presence of an external magnetic field accounting charge particle dynamics is proposed. It based on a reformulation frequency fluctuation model, which provides expression dynamic shape as functional static distribution function frequencies. In field, intensity and polarization emission depends angle between observation field's direction. Comparisons with numerical simulations experimental results various plasma conditions show good...
Modern smartphones have calculation and sensor capabilities that make them suitable for use as versatile reliable measurement devices in simple teaching experiments. In this work a smartphone is used, together with low cost materials, an experiment to measure the frequencies emitted by vibrating rods of different shapes lengths. The results obtained been compared theoretical calculations agreement good. Alternatively, physics students can perform described here their determine dependencies...
The energies and constants of the hyperfine structure, derivatives one‐electron characteristics on nuclear radius, electric quadrupole, magnetic dipole moments for some Li‐like multicharged ions are calculated.
Context. We studied the Stark broadening of He I 492.2 nm line, which is sometimes used for plasma diagnostics or to obtain information on different stellar parameters.
<i>Context. <i/>Stark broadening of the 447.1 line neutral helium in a weakly coupled plasma has been studied. This spectral very close forbidden component. means it is sensitive to electron density, which similar hydrogen lines, for Stark effect linear.<i>Aims. <i/>The aim this work supply information be used spectroscopic diagnostics plasmas.<i>Methods. <i/>We computer simulations frame physical model with weak coupling between charges. The calculation includes so-called "ion dynamics...
A simple experiment on the determination of coefficient restitution different materials is taken as basis an extendable work that can be done by students in autonomous way. On whole, described this paper would involve concepts kinematics, science, air drag and buoyancy, help to think physics a whole subject instead set of, more or less, isolated parts. The either teaching laboratories at home. Students' smartphones cheap balls are only experimental required do experiment. proposed also...
This paper describes several experiments performed by our research group to show the use of smartphones in physics teaching. We document work on development apps for and how recorded sensor data. As a final result, some interesting outcomes are obtained from surveys conducted students about these applications their mLearning experience general. These results that very interested using as complement more traditional learning. Finally, influence developed students' grades engagement was also...
Physics is a subject that for complete teaching and learning requires both theoretical discussions practical experimentation. In this work we describe how mobile applications can turn smartphones into versatile measurement devices broad fields of physics. Different physics experiments performed using our own developed applications, in the laboratory profiting from everyday activities, are described. The use smartphones' opens possibility developing low-cost laboratories as well international...
Studies of charge-charge (ion-ion, ion-electron, and electron-electron) coupling properties for ion impurities in an electron gas are carried out on the basis a regularized electron-ion potential without short-range Coulomb divergence. This work is motivated, part, by questions arising from recent spectroscopic measurements revealing discrepancies with present-day theoretical descriptions. Many current radiative property models plasmas include only single electron-emitter collisions neglect...
Aims.Recent measurements on the Stark broadening of radio recombination lines show values and trends in disagreement with conventional theories. Different attemps to explain those disagreements have not been successfull for any employed theoretical models. In particular, impact model that describes well physical conditions at which studied broadenings occur, shows a functional trend upon principal quantum number transitions does correspond experimental observations.
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 A. V. Glushkov, O. Yu. Khetselius, Loboda, Ignatenko, Svinarenko, D. Korchevsky, L. Lovett; QED Approach to Modeling Spectra of the Multicharged Ions in a Plasma: Oscillator Electron‐ion Collision Strengths. AIP Conf. Proc. 22 October 2008; 1058 (1): 175–177. https://doi.org/10.1063/1.3026437 Download citation...