Browsing DFis-Artículos, capítulos, libros... by Title

Now showing items 111-130 of 135

    • El siglo XIX: la Teoría Electromagnética 

      León Álvarez, Julio (2006-09-26)

    • Simple and analytical function for the Stark profile of the Hα line and its application to plasma characterization 

      Díaz Soriano, Antonio Manuel; Dimitrijević, Milan S.; Alcaraz Pelegrina, José Manuel; Sarsa, A.; Yubero, Cristina (Elsevier, 2018)
      The increasing application of plasma based technologies over a wide range of fields has led to the necessity of an optimal determination of the characteristic parameters of the plasma systems. Optical Emission Spectroscopy ...

    • Simulations of pulse propagation in optical fibers using graphics processor units 

      Alcaraz Pelegrina, José Manuel; Rodríguez-García, Pedro (Elsevier, 2011)
      Several simple cases of pulse propagation in optical fibers have been simulated using a graphics processor unit. Comparisons with simulations in a computer processor unit are also reported. Speedups from 4 to 36 have been ...

    • Singlet vs. triplet interelectronic repulsion in confined atoms 

      Sarsa, A.; Buendía, E.; Gálvez, F.J.; Katriel, J. (Elsevier, 2018)
      Hund’s multiplicity rule invariably holds for the ground configurations of few-electron atoms as well as those of multi-electron quantum dots. However, the ordering of the corresponding interelectronic repulsions exhibits ...

    • Software público, libre, abierto, gratuito, privativo y comercial para la innovación y mejora de la calidad en la docencia, investigación, gestión y asistencia 

      Dorado, G.; García-Ortega, A.; Lora López, P.; Caballero, J.A.; Ballesteros, Jerónimo; Hernández, Pilar; Dorado, M.P.; Esteban, F.J. (Universidad de Córdoba, Vicerrectorado de Innovación y Calidad Docente, 2007)
      The public free software (now renamed as open software) is the basis of the open source software (OSS) project. This initiative promotes the use of open standards and platform-independent accessibility. Many OSS products ...

    • Spatial Distribution of Wettability in Aluminum Surfaces Treated with an Atmospheric-Pressure Remote-Plasma 

      Muñoz, José; Rincón, Rocío; Calzada Canalejo, María Dolores (MDPI, 2019)
      The use of atmospheric-pressure remote plasmas (postdischarge) sustained in argon and argon–nitrogen for the treatment of aluminum surfaces has been studied to better understand the underlying mechanisms responsible for ...

    • Spectral Methods in Nonlinear Optics Equations for Non-Uniform Grids Using an Accelerated NFFT Scheme 

      Rodríguez, Pedro; Romero, Manuel; Ortiz Mora, Antonio; Díaz Soriano, Antonio Manuel (MDPI, 2023)
      In this work, we propose the use of non-homogeneous grids in 1D and 2D for the study of various nonlinear physical equations using spectral methods. As is well known, the use of spectral methods allow a faster resolution ...

    • Spectroscopic Study of Ar-N2 Spatial Postdischarges Sustained in Atmospheric-Pressure Microwave Plasmas 

      Morales Calero, Francisco Javier; Cobos-Luque, A.; Muñoz Espadero, José; Rincón, Rocío; Calzada Canalejo, María Dolores (Wiley, 2025)
      Atmospheric pressure microwave-sustained Ar-N2 spatial postdischarges are characterized by a high content of reactive nitrogen species as well as low gas temperature values with potential to be used in different applications, ...

    • Spherical image potentials for an N-charged particle system 

      Randazzo, Juan M.; Della Pica, Renata; Sarsa, A.; Ancarani, L. Ugo (The Royal Society Publishing, 2024)
      The potential energy interaction between a system of N-charged particles and a spherical conducting surface is obtained by means of direct integration of the electrostatic energy density. Making use of the image charge ...

    • Spin-driven structural effects in alkali doped 4He clusters from quantum calculations 

      Bovino, Stefano; Coccia, Emmanuelle; Bodo, Enrico; López Durán, David; Gianturco, Franco Antonio (American Institute of Physics, 2009)
      In this paper, we carry out variational Monte Carlo and diffusion Monte Carlo (DMC) calculations for Li2(1Sigma)(4He)N and Li2(3Sigma)(4He)N with N up to 30 and discuss in detail the results of our computations. After a ...

    • Stability after confinement of the H atom 

      Morcillo Arencibia, Milagros Francisca; Borja, Enrique F.; Alcaraz Pelegrina, José Manuel; Sarsa, A. (Elsevier, 2019)
      The stability of a spherically confined atomic system when confinement is removed is studied. We consider s, p, d, and f states of the Hydrogen atom confined by a finite barrier. The stability is characterized in terms of ...

    • Stark broadening data for Si II multiplets within 3s3p(3Po)nl configuration 

      Dimitrijević, Milan S.; Christova, Magdalena D.; Yubero, Cristina (Elsevier, 2023)
      The electron-impact widths for 13 Si II multiplets, belonging to the 3s3p(3Po)nl configuration, have been calculated by using the modified semiempirical method. Since a number of these lines is in visible, they are of ...

    • Stark Broadening of Se IV, Sn IV, Sb IV and Te IV Spectral Lines 

      Dimitrijević, Milan S.; Simić, Zoran; Stamm, Roland; Rosato, Joël; Milovanović, Nenad; Yubero, Cristina (MDPI, 2018)
      Stark broadening parameters, line width and shift, are needed for investigations, análisis and modelling of astrophysical, laboratory, laser produced and technological plasmas. Especially in astrophysics, due to constantly ...

    • Stationary pulses in two cubic–quintic Ginzburg–Landau equations coupled with a cross phase modulation term 

      Alcaraz Pelegrina, José Manuel; Rodríguez-García, Pedro (Elsevier, 2011)
      Existence of stationary pulses are investigated in system modelled by two cubic–quintic Ginzburg–Landau equations coupled with a cross phase modulation term. Only for the symmetric case, that is, when the two components ...

    • Study of the plasma–liquid interaction for an argon nonthermal microwave plasma jet from the analysis of benzene degradation 

      Casado, Enrique; García, María C; Krawczyk, Dorota Anna; Romero-Salguero, F.J.; Rodero Serrano, Antonio (Wiley, 2020)
      The interaction of an argon microwave plasma jet with a benzene layer on water has been analyzed under different conditions (power, gas flow, plasma-sample distance, and treatment time) in this study. Main products formed ...

    • Suppression of electrostatic micro-instabilities in maximum-J stellarators 

      Alcusón, J.A.; Xanthopoulos, P.; Plunk, G.G.; Helander, P.; Wilms, F.; Turkin, Y.; von Stechow, A.; Grulke, O. (IOP Publishing, 2020)
      We demonstrate favorable stability properties of maximum-J stellarators, exemplified by the Wendelstein 7-X (W7-X) device, in scenarios with low plasma beta. A large number of electrostatic linear gyrokinetic simulations ...

    • The CECAM electronic structure library and the modular software development paradigm 

      Oliveira, Micael; Papior, Nick; Pouillon, Yann; Blum, Volker; Artacho, Emilio; López Durán, David (American Institute of Physics, 2020)
      First-principles electronic structure calculations are now accessible to a very large community of users across many disciplines, thanks to many successful software packages, some of which are described in this special ...

    • The LisbOn KInetics Boltzmann solver 

      Tejero del Caz, Antonio; Guerra, Vasco; Gonçalves, Duarte; da Silva, Mario Lino; Marques, Luis; Pinhão, Nuno; Pintassilgo, Carlos Daniel; Alves, Luis Lemos (IOP Publishing, 2019)
      The LisbOn KInetics Boltzmann (LoKI-B) is an open-source simulation tool (https://github.com/IST-Lisbon/LoKI) that solves a time and space independent form of the two-term electron Boltzmann equation, for non-magnetised ...

    • The LisbOn KInetics Monte Carlo solver 

      Dias, Tiago Cunha; Tejero del Caz, Antonio; Alves, Luis Lemos; Guerra, Vasco (Elsevier, 2023)
      The LisbOn KInetics Monte Carlo (LoKI-MC) is an open-source simulation tool that solves the electron kinetics for low-temperature plasmas excited by uniform DC electric fields from different gas mixtures, using Monte Carlo ...

    • The universal instability in optimized stellarators 

      Costello, P.; Proll, J.H.E.; Plunk, G.G.; Pueschel, M.J.; Alcusón, J.A. (2023)
      In tokamaks and neoclassically optimised stellarators, like Wendelstein 7-X (W7-X) and the Helically Symmetric Experiment, turbulent transport is expected to be the dominant transport mechanism. Among the electrostatic ...