Model experiment of cosmic ray acceleration due to an incoherent wakefield induced by an intense laser pulse

Kuramitsu, Y.; Nakanii, N.; Kondo, K.; Sakawa, Y.; Mori, Y.; Miura, E.; Tsuji, K.; Kimura, K.; Fukumochi, S.; Kashihara, M.; Tanimoto, T.; Nakamura, H.; Ishikura, T.; Takeda, K.; Tampo, M.; Kodama, R.; Kitagawa, Y.; Mima, K.; Tanaka, K. A.; Hoshino, M.
January 2011
Physics of Plasmas;Jan2011, Vol. 18 Issue 1, p010701
Academic Journal
The first report on a model experiment of cosmic ray acceleration by using intense laser pulses is presented. Large amplitude light waves are considered to be excited in the upstream regions of relativistic astrophysical shocks and the wakefield acceleration of cosmic rays can take place. By substituting an intense laser pulse for the large amplitude light waves, such shock environments were modeled in a laboratory plasma. A plasma tube, which is created by imploding a hollow polystyrene cylinder, was irradiated by an intense laser pulse. Nonthermal electrons were generated by the wakefield acceleration and the energy distribution functions of the electrons have a power-law component with an index of ∼2. The maximum attainable energy of the electrons in the experiment is discussed by a simple analytic model. In the incoherent wakefield the maximum energy can be much larger than one in the coherent field due to the momentum space diffusion or the energy diffusion of electrons.


Related Articles

  • Relativistic self-focusing of ultra-intense laser pulses and ion acceleration. Koga, James; Nakajima, Kazuhisa; Nakagawa, Keisuke // AIP Conference Proceedings;2002, Vol. 611 Issue 1, p126 

    Two dimensional particle-in-cell simulations are performed which show the formation of an extremely large electrostatic field near the front of a relativistically self-focused laser pulse propagating in an underdense plasma. The size of the field is found to reach a maximum of ∼6.5 TV/m for...

  • Ion acceleration by superintense laser pulses in plasmas. Esirkepov, T. Zh.; Sentoku, Y.; Mima, K.; Nishihara, K.; Califano, F.; Pegoraro, F.; Naumova, N. M.; Bulanov, S. V.; Ueshima, Y.; Liseikina, T. V.; Vshivkov, V. A.; Kato, Y. // JETP Letters;7/25/99, Vol. 70 Issue 2, p82 

    Ion acceleration by petawatt laser radiation in underdense and overdense plasmas is studied with 2D3V-PIC (Particle in Cell) numerical simulations. These simulations show that the laser pulse drills a channel through the plasma slab, and electrons and ions expand in vacuum. Fast electrons escape...

  • Fermi acceleration at supernova remnant shocks. Caprioli, D. // AIP Conference Proceedings;Dec2012, Vol. 1505 Issue 1, p237 

    We investigate the physics of particle acceleration at non-relativistic shocks exploiting two different and complementary approaches, namely a semi-analyticmodeling of cosmic-ray modified shocks and large hybrid (kinetic protons/fluid electrons) simulations. The former technique allows us to...

  • Electron cyclotron heating by whistler waves generated during the interaction of a laser pulse with a magnetized plasma. Sotnikov, V. I.; Sentoku, Y.; Krasovitskii, V. B. // Physics of Plasmas;Aug2005, Vol. 12 Issue 8, p082107 

    Numerical simulation of the interaction of a laser pulse propagating along the external magnetic field shows that, along with the electrostatic upper hybrid wave, a laser pulse can parametrically excite a broad spectrum of whistler waves with frequencies below the electron cyclotron frequency....

  • Investigation of Neutron Emissions from D(d,n)3He and T(d,n)4He Reactions in a 10 TW Picosecond Laser Facility SOKOL-P. Andriyash, A. V.; Andryushin, V. V.; Chefonov, O. V.; Chizhkov, M. N.; Dmitrov, D. A.; Kakshin, A. G.; Kapustin, I. A.; Levin, A. V.; Loboda, E. A.; Lykov, V. A.; Pronin, V. A.; Pokrovskiy, V. G.; Potapov, A. V.; Sanzhin, V. N.; Saprykin, V. N.; Ugodenko, A. A.; Vihklyaev, D. A.; Zapysov, A. L.; Zuev, Yu. N. // AIP Conference Proceedings;2006, Vol. 849 Issue 1, p35 

    Experimental results on fast neutron generation in D(d,n)3He and T(d,n)4He reactions in the SOKOL-P laser facility are presented. Solid targets were irradiated by 1.054 μm, s- or p-polarized laser pulses of energy 5–8 J on target and duration 0.85–2 ps. The peak laser intensity...

  • Plasma accelerators race to 10 GeV and beyond. Katsouleas, T. // Physics of Plasmas;May2006, Vol. 13 Issue 5, p055907 

    This paper reviews the concepts, recent history, and current challenges for realizing ultracompact particle accelerators based on surfing on plasma waves. Ideas that seemed fanciful when first proposed by John Dawson in the late 1970s have now come to fruition as a result of the development of...

  • Production of Multi-Terawatt Time-Structured CO2 Laser Pulses for Ion Acceleration. Haberberger, Dan; Tochitsky, Sergei; Gong, Chao; Joshi, Chan // AIP Conference Proceedings;11/5/2010, Vol. 1299 Issue 1, p737 

    The UCLA Neptune Laboratory CO2 laser system has been recently upgraded to produce 3ps multi-terawatt 10μm laser pulses. The laser energy is distributed over several 3 ps pulses separated by 18 ps. These temporally structured pulses are applied for laser driven ion acceleration in an H2 gas...

  • Quasi-phase-matching of harmonic waves in plasmas: Calculations, new schemes, and applications. Ganeev, R. // Optics & Spectroscopy;Oct2016, Vol. 121 Issue 4, p614 

    We review recent studies of the coherent phase matched conversion of ultrashort pulses in the modulated plasmas. Particularly, we discuss the influence of ablated and tunneled electrons on the quasiphase- matched high-order harmonic generation in laser-produced plasma and application of...

  • One- and two-dimensional simulations or ultra-snort-pulse reflectometry (abstract) Cohen, Bruce I.; Kaiser, Thomas B.; Garrison, John C. // Review of Scientific Instruments;Jan1997, Vol. 68 Issue 1, p477 

    Reports on a study which examined ultra-short-pulse reflectometry by means of the numerical integration of one- and two-dimensional full-wave equations for ordinary and extraordinary modes propagating in plasma. Identification of Bragg resonance effects; Correlation reflectometry measurements.


Read the Article


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

Try another library?
Sign out of this library

Other Topics