Electron trajectories and betatron oscillation in the wake bubble in laser-plasma interaction

Hai-Cheng Wu; Bai-Song Xie; Ming-Ping Liu; Xue-Ren Hong; Shan Zhang; Yu, M. Y.
July 2009
Physics of Plasmas;Jul2009, Vol. 16 Issue 7, p073108
Academic Journal
The trajectories of electrons originating from different initial locations in the unperturbed plasma during the interaction of an ultraintense laser with underdense plasma in the bubble regime are followed by particle-in-cell simulation. It is found that plasma electrons initially aligned with the rim of the laser focal spot contribute most to the bow wave in front of the bubble and those aligned with the lateral bubble sheath edge contribute most to the self-injection at the back of the bubble. A scaling law between the transverse electric and magnetic fields for the case where there are many electrons in the bubble is given and discussed in terms of betatron oscillations of the injected electrons.


Related Articles

  • Controlling the spectrum of x-rays generated in a laser-plasma accelerator by tailoring the laser wavefront. Mangles, S. P. D.; Genoud, G.; Kneip, S.; Burza, M.; Cassou, K.; Cros, B.; Dover, N. P.; Kamperidis, C.; Najmudin, Z.; Persson, A.; Schreiber, J.; Wojda, F.; Wahlström, C.-G. // Applied Physics Letters;11/2/2009, Vol. 95 Issue 18, p181106 

    By tailoring the wavefront of the laser pulse used in a laser-wakefield accelerator, we show that the properties of the x-rays produced due to the electron beam’s betatron oscillations in the plasma can be controlled. By creating a wavefront with coma, we find that the critical energy of...

  • Employing laser-accelerated proton beams to diagnose high intensity laser-plasma interactions. Sarri, G.; Cecchetti, C. A.; Quinn, K.; Norreys, P. A.; Trines, R.; Willi, O.; Fuchs, J.; McKenna, P.; Quinn, M.; Pegoraro, F.; Bulanov, S. V.; Borghesi, M. // AIP Conference Proceedings;7/9/2012, Vol. 1462 Issue 1, p149 

    A review of the proton radiography technique will be presented. This technique employs laser-accelerated laminar bunches of protons to diagnose the temporal and spatial characteristic of the electric and magnetic fields generated during high-intensity laser-plasma interactions. The remarkable...

  • Laser-plasma booster for ion post acceleration. Satoh, D.; Kawata, S.; Takahashi, K.; Izumiyama, T.; Barada, D.; Ma, Y. Y.; Kong, Q.; Wang, P. X.; Wang, W. M.; T. Li, Y.; Sheng, Z. M.; Klimo, O.; Limpouch, J.; Andreev, A. A. // EPJ Web of Conferences;2013, Issue 59, p1 

    A remarkable ion energy increase is demonstrated for post acceleration by a laser-plasma booster. An intense short-pulse laser generates a strong current by high-energy electrons accelerated, when this intense short-pulse laser illuminates a plasma target. The strong electric current creates a...

  • Growth of magnetic field in a two-component plasma. Nieves, J. F.; Sahu, Sarira // AIP Conference Proceedings;2006, Vol. 857 Issue 1, p234 

    We study the electromagnetic properties of a system that consists of an electron background and a neutrino gas that may be moving or at rest, as a whole, relative to the background. The photon self-energy for this system is characterized by the usual transverse and longitudinal polarization...

  • Electron acceleration in combined intense laser fields and self-consistent quasistatic fields in plasma. Bin Qiao; He, X. T.; Zhu, Shao-ping; Zheng, C. Y. // Physics of Plasmas;Aug2005, Vol. 12 Issue 8, p083102 

    The acceleration of plasma electron in intense laser-plasma interaction is investigated analytically and numerically, where the conjunct effect of laser fields and self-consistent spontaneous fields (including quasistatic electric field Esl, azimuthal quasistatic magnetic field Bsθ and the...

  • Production and applications of quasi-monoenergetic electron bunches in laser-plasma based accelerators. Glinec, Y.; Faure, J.; Ewald, F.; Lifschitz, A.; Malka, V. // AIP Conference Proceedings;2006, Vol. 827 Issue 1, p265 

    Plasmas are attractive media for the next generation of compact particle accelerators because they can sustain electric fields larger than those in conventional accelerators by three orders of magnitude. However, until now, plasma-based accelerators have produced relatively poor quality electron...

  • A novel method for detection of strong magnetic fields in femtosecond laser-matter interaction. Bésuelle, E.; Teychenné, D.; Salomaa, R. R. E. // Physics of Plasmas;Jul2000, Vol. 7 Issue 7 

    Femtosecond laser-matter interaction can produce strongly magnetized dense plasmas via ultrafast ionization process. This paper proposes a diagnostic--which is not yet existing as far as we know--to prove the existence and to measure the strength of the quasistatic magnetic field in overdense...

  • Erratum: “Measurements of ultrastrong magnetic fields during relativistic laser–plasma interactions” [Phys. Plasmas 9, 2244 (2002)]. Tatarakis, M.; Gopal, A.; Watts, I.; Beg, F. N.; Wei, M.-S.; Dangor, A. E.; Krushelnick, K.; Wagner, U.; Norreys, P. A.; Clark, E. L.; Zepf, M.; Evans, R. G. // Physics of Plasmas;Aug2002, Vol. 9 Issue 8, p3642 

    Presents a corrected reprint of the article 'Measurements of Ultrastrong Magnetic Fields during Relativistic Laser-Plasma Interactions,' by M. Tatarakis et. al.

  • Relativistic interaction of ultra-short laser pulses with plasmas. Bulanov, S. V.; Esirkepov, T. Zh.; Farina, D.; Kamenets, F. F.; Khoroshkov, V. S.; Kuznetsov, A. V.; Liseikina, T. V.; Lontano, M.; Naumova, N. M.; Nishihara, K.; Pegoraro, F.; Ruhl, H.; Sakai, J.-I.; Sokolov, D. V.; Sokolov, I. V. // AIP Conference Proceedings;2002, Vol. 611 Issue 1, p104 

    The review of the results obtained recently in the theory and in the computer simulations with 2D and 3D PIC codes of the interaction of high-intensity, ultra-short laser pulses with plasmas is presented. The laser interaction with underdense plasmas and its application to the problem of charged...


Read the Article


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

Try another library?
Sign out of this library

Other Topics