Zobrazeno 1 - 10
of 1 063
pro vyhledávání: '"Ebert, U"'
Publikováno v:
Plasma Sources Sci. Technol. 32 095006 (2023)
In this paper, we study how streamer discharges are influenced by a previous voltage pulse using an axisymmetric fluid model. We simulate double-pulse positive streamers in N2-O2 mixtures containing 20% and 10% O2 at 1 bar. By varying the time betwee
Externí odkaz:
http://arxiv.org/abs/2302.11463
We present cross sections for the neutral dissociation of methane, in a large part obtained through analytical approximations. With these cross sections the work of Song $\textit{et al.}$ [J. Phys. Chem. Ref. Data, $\textbf{44}$, 023101, (2015)] can
Externí odkaz:
http://arxiv.org/abs/2106.01935
Autor:
Hare, B. M., Scholten, O., Dwyer, J., Ebert, U., Nijdam, S., Bonardi, A., Buitink, S., Corstanje, A., Falcke, H., Huege, T., Hörandel, J. R., Krampah, G. K., Mitra, P., Mulrey, K., Neijzen, B., Nelles, A., Pandya, H., Rachen, J. P., Rossetto, L., Trinh, T. N. G., ter Veen, S., Winchen, T.
Publikováno v:
Phys. Rev. Lett. 124, 105101 (2020)
We use the Low Frequency ARray (LOFAR) to probe the dynamics of the stepping process of negatively-charged plasma channels (negative leaders) in a lightning discharge. We observe that at each step of a leader, multiple pulses of VHF (30~--~80 MHz) ra
Externí odkaz:
http://arxiv.org/abs/2007.03231
Autor:
Malagón-Romero, A., Teunissen, J., Stenbaek-Nielsen, H. C., McHarg, M. G., Ebert, U., Luque, A.
We investigate the launch of negative upward streamers from sprite glows. This phenomenon is readily observed in high-speed observations of sprites and underlies the classification of sprites into carrot or column types. First, we describe how an att
Externí odkaz:
http://arxiv.org/abs/2001.06248
Autor:
Elkholy, A., van Veldhuizen, E., Nijdam, S., Ebert, U., van Oijen, J., Dam, N., de Goey, L. Philip H.
We present a novel microplasma flow reactor using a dielectric barrier discharge (DBD) driven by repetitively nanosecond high-voltage pulses. Our DBD-based geometry can generate a non-thermal plasma discharge at atmospheric pressure and below in a re
Externí odkaz:
http://arxiv.org/abs/1709.02654
Autor:
Trinh, T. N. G., Scholten, O., Bonardi, A., Buitink, S., Corstanje, A., Ebert, U., Enriquez, J. E., Falcke, H., Horandel, J. R., Hare, B. M., Mitra, P., Mulrey, K., Nelles, A., Rachen, J. P., Rossetto, L., Rutjes, C., Schellart, P., Thoudam, S., ter Veen, S., Winchen, T.
We observe a large fraction of circular polarization in radio emission from extensive air showers recorded during thunderstorms, much higher than in the emission from air showers measured during fair-weather circumstances. We show that the circular p
Externí odkaz:
http://arxiv.org/abs/1703.06008
Autor:
Helling, Ch., Harrison, R. G., Honary, F., Diver, D. A., Aplin, K., Dobbs-Dixon, I., Ebert, U., Inutsuka, S., Gordillo-Vazquez, F. J., Littlefair, S.
Detailed observations of the solar system planets reveal a wide variety of local atmospheric conditions. Astronomical observations have revealed a variety of extrasolar planets none of which resembles any of the solar system planets in full. Instead,
Externí odkaz:
http://arxiv.org/abs/1601.04594
Autor:
Trinh, T. N. G., Scholten, O., Buitink, S., Berg, A. M. van den, Corstanje, A., Ebert, U., Enriquez, J. E., Falcke, H., Hörandel, J. R., Köhn, C., Nelles, A., Rachen, J. P., Rossetto, L., Rutjes, C., Schellart, P., Thoudam, S., ter Veen, S., de Vries, K. D.
Publikováno v:
Phys. Rev. D 93, 023003 (2016)
The atmospheric electric fields in thunderclouds have been shown to significantly modify the intensity and polarization patterns of the radio footprint of cosmic-ray-induced extensive air showers. Simulations indicated a very non-linear dependence of
Externí odkaz:
http://arxiv.org/abs/1511.03045
Autor:
Schellart, P., Trinh, T. N. G., Buitink, S., Corstanje, A., Enriquez, J. E., Falcke, H., Hörandel, J. R., Nelles, A., Rachen, J. P., Rossetto, L., Scholten, O., ter Veen, S., Thoudam, S., Ebert, U., Koehn, C., Rutjes, C., Alexov, A., Anderson, J. M., Avruch, I. M., Bentum, M. J., Bernardi, G., Best, P., Bonafede, A., Breitling, F., Broderick, J. W., Brüggen, M., Butcher, H. R., Ciardi, B., de Geus, E., de Vos, M., Duscha, S., Eislöffel, J., Fallows, R. A., Frieswijk, W., Garrett, M. A., Grießmeier, J., Gunst, A. W., Heald, G., Hessels, J. W. T., Hoeft, M., Holties, H. A., Juette, E., Kondratiev, V. I., Kuniyoshi, M., Kuper, G., Mann, G., McFadden, R., McKay-Bukowski, D., McKean, J. P., Mevius, M., Moldon, J., Norden, M. J., Orru, E., Paas, H., Pandey-Pommier, M., Pizzo, R., Polatidis, A. G., Reich, W., Röttgering, H., Scaife, A. M. M., Schwarz, D. J., Serylak, M., Smirnov, O., Steinmetz, M., Swinbank, J., Tagger, M., Tasse, C., Toribio, M. C., van Weeren, R. J., Vermeulen, R., Vocks, C., Wise, M. W., Wucknitz, O., Zarka, P.
We present measurements of radio emission from cosmic ray air showers that took place during thunderstorms. The intensity and polarization patterns of these air showers are radically different from those measured during fair-weather conditions. With
Externí odkaz:
http://arxiv.org/abs/1504.05742
Publikováno v:
J. Phys. D: Appl. Phys., 2014, 47, 145203
We study the development of a negative discharge driven by a Marx generator of about 1 MV in an air gap of 1 up to 1.5 meter, at standard temperature and pressure. We show the evolution of the discharge with nanosecond-fast photography together with
Externí odkaz:
http://arxiv.org/abs/1312.4765