Ara es mostren els items 223-231 de 231

    • Wakefield acceleration in planetary atmospheres: a possible source of MeV electrons : the collisionless case 

      Arrayas Chazeta, Manuel; Cubero Gómez, David; Montañá Puig, Juan; Seviour, Rebecca; Trueba Santander, Jose Luis (2018-07-01)
      Article
      Accés obert
      Intense electromagnetic pulses interacting with a plasma can create a wake of plasma oscillations. Electrons trapped in such oscillations can be accelerated under certain conditions to very high energies. We study the ...
    • Winter lightning activity in specific global regions and implications to wind turbines and tall structures 

      March Nomen, Víctor; Montañá Puig, Juan; Fabró Tàpia, Ferran; Van der Velde, Oscar Arnoud; Romero Durán, David; Solà de las Fuentes, Glòria; Freijo Álvarez, Modesto; Pineda Rüegg, Nicolau (Zakon Group, 2016)
      Text en actes de congrés
      Accés obert
      The paper presents winter lightning maps on specific regions in the northern hemisphere. Four different degrees of winter lightning activity are defined based on information derived from Japanese case. Based on this reference ...
    • Winter lightning triggered by wind-turbines: the case of snowstorm Filomena 

      Pineda Rüegg, Nicolau; Fabró Tapia, Ferran; Montañá Puig, Juan; López Trujillo, Jesús Alberto; Solà de las Fuentes, Glòria; Rodríguez Ballester, Oriol (2022)
      Text en actes de congrés
      Accés restringit per política de l'editorial
      Winter storm Filomena battered the Iberian Peninsula on the 9-10th January 2021, covering the eastern half of Spain with a huge amount of snow. Apart from the historical snowfall, lightning activity was observed during ...
    • WMO world record lightning extremes: longest reported flash distance and longest reported flash duration 

      Lang, Timothy J.; Pédeboy, Stéphane; Rison, William; Montañá Puig, Juan; Cerveny, Randall S.; Chauzy, Serge; MacGorman, Donald R.; Holle, Ronald L.; Ávila, Eldo; Zhang, Yijun; Carbin, Gregory; Mansell, Edward R.; Kuleshov, Yuriy; Peterson, Thomas C.; Brunet, Manola; Driouech, Fatima; Krahenbuhl, Daniel S. (2016-09-16)
      Article
      Accés obert
      A World Meteorological Organization weather and climate extremes committee has judged that the world’s longest reported distance for a single lightning flash occurred with a horizontal distance of 321 km (199.5 mi) over ...
    • Work on electric field measurement applied to lightning predictive protection 

      Montañá Puig, Juan; Bergas Jané, Joan Gabriel; Hermoso Alameda, Blas (2002)
      Comunicació de congrés
      Accés restringit per decisió de l'autor
      Electrostatic field mill have been large employed by scientist for charge estimations, concentrations etc.. in not very much cases field mills are employed as a part of a protection system or as a warning system. One ...
    • X-rays and microwave RF power from high voltage laboratory sparks 

      Montañá Puig, Juan; Fabró Tàpia, Ferran; March Nomen, Víctor; Van der Velde, Oscar Arnoud; Solà de las Fuentes, Glòria; Romero Durán, David; Argemí Ribera, Oriol (2015-07-16)
      Article
      Accés obert
      Lightning flashes involve high energy processes that still are not well understood. In the laboratory, high voltage pulses are used to produce long sparks in open air allowing the production of energetic radiation. In this ...
    • X-rays and microwave RF power from high voltage laboratory sparks 

      Montañá Puig, Juan; Fabró Tàpia, Ferran; March Nomen, Víctor; Van der Velde, Oscar Arnoud; Solà de las Fuentes, Glòria; Romero Durán, David (2014)
      Text en actes de congrés
      Accés obert
      Lightning involves high energy processes that still are not well understood. In the laboratory voltages pulses are used to produce long sparks allowing the production of energetic radiation. In this paper X-rays emitted ...
    • X-rays from laboratory sparks in air: the relationship between runaway electrons and the electric field 

      March Nomen, Víctor; Montañá Puig, Juan; Romero Durán, David; Solà de las Fuentes, Glòria; Van der Velde, Oscar Arnoud (2012)
      Text en actes de congrés
      Accés restringit per política de l'editorial
      This article presents an experiment in which the gap distance was varied between 46 and 84 cm. Series of 15 voltage impulses were applied for each distance and different peak voltages with a rise time of 600 ns. The results ...
    • X-Rays from long laboratory sparks in air 

      Montañá Puig, Juan; March Nomen, Víctor; Kochkin, Pavlo (2016-07-01)
      Capítol de llibre
      Accés obert
      This collective book provides a review of research concentrated on runaway electron beams and X-rays in an inhomogeneous electric field with different gases at increased pressure. Attention is also given to supershort ...