TITLE

Observation of plasma array dynamics in 110 GHz millimeter-wave air breakdown

AUTHOR(S)
Cook, Alan M.; Hummelt, Jason S.; Shapiro, Michael A.; Temkin, Richard J.
PUB. DATE
October 2011
SOURCE
Physics of Plasmas;Oct2011, Vol. 18 Issue 10, p100704
SOURCE TYPE
Academic Journal
DOC. TYPE
Article
ABSTRACT
We present dynamical measurements of self-organizing arrays of plasma structures in air induced by a 110 GHz millimeter-wave beam with linear or circular polarization. The formation of the individual plasmas and the growth of the array pattern are studied using a fast-gated (5-10 ns) intensified camera. We measure the time-dependent speed at which the array pattern propagates in discrete steps toward the millimeter-wave source, observing a peak speed greater than 100 km/s. We observe the expansion of an initially spherical plasma into a disk or an elongated filament, depending on the polarization of the incident beam. The results show good agreement with one-dimensional ionization-diffusion theory and two-dimensional simulations.
ACCESSION #
66903228

 

Related Articles

  • Dynamics of laser self-triggered plasma shutter for shortening laser pulses. Xia, Changquan; Liu, Jiansheng; Deng, Aihua; Wang, Wentao; Wang, Cheng; Li, Ruxin; Xu, Zhizhan // Physics of Plasmas;Dec2010, Vol. 17 Issue 12, p123113 

    The dynamics of a solid foil irradiated by a circularly polarized laser pulse in the normal incidence is investigated by performing particle-in-cell simulations. After sufficiently compressed by the light pressure, the foil becomes transparent, with a part of the incident pulse transmitted...

  • Gases of exploding laser-heated cluster nanoplasmas as a nonlinear optical medium. Kim, K. Y.; Alexeev, I.; Kumarappan, V.; Parra, E.; Antonsen, T.; Taguchi, T.; Gupta, A.; Milchberg, H. M. // Physics of Plasmas;May2004, Vol. 11 Issue 5, p2882 

    The manner in which strongly heated nanoclusters explode in the presence of intense laser fields influences all applications of this interaction. By measuring, with femtosecond time resolution, the ensemble average polarizability in a gas of intense laser-heated clusters, we have inferred the...

  • Millimeter wave generation from a pseudospark-sourced electron beam. Yin, H.; Cross, A. W.; He, W.; Phelps, A. D. R.; Ronald, K.; Bowes, D.; Robertson, C. W. // Physics of Plasmas;Jun2009, Vol. 16 Issue 6, p063105 

    Experimental studies of the production and propagation of an electron beam from a multigap pseudospark discharge are presented. From a three-gap pseudospark, a beam up to 680 A was measured at the anode at an applied dc voltage of 23 kV. This beam can propagate downstream as far as 20 cm in a...

  • MM-wave emission by magnetized plasma during sub-relativistic electron beam relaxation. Ivanov, I. A.; Arzhannikov, A. V.; Burdakov, A. V.; Burmasov, V. S.; Gavrilenko, D. E.; Kasatov, A. A.; Kandaurov, I. V.; Kurkuchekov, V. V.; Kuznetsov, S. A.; Mekler, K. I.; Polosatkin, S. V.; Popov, S. S.; Postupaev, V. V.; Rovenskikh, A. F.; Sklyarov, V. F.; Sorokina, N. V.; Trunev, Yu. A.; Vyacheslavov, L. N. // Physics of Plasmas;Dec2015, Vol. 22 Issue 12, p1 

    There are described electromagnetic spectra of radiation emitted by magnetized plasma during subrelativistic electron beam in a double plasma frequency band. Experimental studies were performed at the multiple-mirror trap GOL-3. The electron beam had the following parameters: 70-110 keV for the...

  • Plasma Channels and Accelerator Applications — A Tutorial. Hubbard, Richard F. // AIP Conference Proceedings;2006, Vol. 877 Issue 1, p83 

    A plasma channel is a narrow preionized column of plasma that can be used for a number of accelerator applications. Plasma channels play a crucial role in the laser wakefield accelerator (LWFA), where they may provide the acceleration medium as well as guiding of the intense laser pulse and...

  • Full wave simulations of fast wave mode conversion and lower hybrid wave propagation in tokamaks. Wright, J. C.; Bonoli, P. T.; Brambilla, M.; Meo, F.; D'azevedo, E.; Batchelor, D. B.; Jaeger, E. F; Berry, L. A.; Phillips, C. K.; Pletzer, A. // Physics of Plasmas;May2004, Vol. 11 Issue 5, p2473 

    Fast wave (FW) studies of mode conversion (MC) processes at the ion-ion hybrid layer in toroidal plasmas must capture the disparate scales of the FW and mode converted ion Bernstein and ion cyclotron waves. Correct modeling of the MC layer requires resolving wavelengths on the order of k ....

  • Generation of very low energy-spread electron beams using low-intensity laser pulses in a low-density plasma. Upadhyay, Ajay K.; Samant, Sushil Arun; Sarkar, Deepangkar; Jha, Pallavi; Krishnagopal, Srinivas // Physics of Plasmas;Mar2011, Vol. 18 Issue 3, p033109 

    The possibility of obtaining high-energy electron beams of high quality by using a low-density homogeneous plasma and a low-intensity laser (just above the self-injection threshold in the bubble regime) has been explored. Three-dimensional simulations are used to demonstrate, for the first time,...

  • Numerical study of 1.1 GeV electron acceleration over a-few-millimeter-long plasma with a tapered density. Hur, Min Sup; Suk, Hyyong // Physics of Plasmas;Mar2011, Vol. 18 Issue 3, p033102 

    We present two-dimensional particle-in-cell simulations of laser wakefield electron acceleration up to 1.1 GeV over a-few-millimeter-long plasma with the help of density tapering. We observed that, in a uniform plasma, the electron beam reaches the dephasing state not only by the slow phase...

  • Shock-ignition relevant experiments with planar targets on OMEGA. Hohenberger, M.; Theobald, W.; Hu, S. X.; Anderson, K. S.; Betti, R.; Boehly, T. R.; Casner, A.; Fratanduono, D. E.; Lafon, M.; Meyerhofer, D. D.; Nora, R.; Ribeyre, X.; Sangster, T. C.; Schurtz, G.; Seka, W.; Stoeckl, C.; Yaakobi, B. // Physics of Plasmas;Feb2014, Vol. 21 Issue 2, p1 

    We report on laser-driven, strong-shock generation and hot-electron production in planar targets in the presence of a pre-plasma at shock-ignition (SI) relevant laser and pre-plasma conditions. 2-D simulations reproduce the shock dynamics well, indicating ablator shocks of up to 75 Mbar have...

Share

Read the Article

Courtesy of VIRGINIA BEACH PUBLIC LIBRARY AND SYSTEM

Sorry, but this item is not currently available from your library.

Try another library?
Sign out of this library

Other Topics