TITLE

Cherenkov radiation of a fast electron in ultrashort intense laser plasmas

AUTHOR(S)
Qiang-Lin Hu; Shi-Bing Liu; Wei Li
PUB. DATE
December 2007
SOURCE
Physics of Plasmas;Dec2007, Vol. 14 Issue 12, p123101
SOURCE TYPE
Academic Journal
DOC. TYPE
Article
ABSTRACT
The Cherenkov radiation resulting from a fast electron in ultrashort intense laser plasma is explored theoretically based on the density perturbation theory. The radiation emitting conditions and characteristics of the corresponding Cherenkov geometry are discussed in detail. By numerical computation, a significant conclusion is revealed that the THz radiation of Cherenkov-type can be excited by the coupling of a fast electron produced by an intense ultrashort pulse laser and plasma medium in specifically parameter conditions. The results show that the radiation intensity is strongly dependent on the pulse duration of incident laser and the velocity of a fast electron, the emission spectrum width is dependent on the plasma density and the ratio of a fast electron and laser group velocities, and the emission angle distribution is dependent on the effective radius of laser beam.
ACCESSION #
28131107

 

Related Articles

  • Quasimonoenergetic electron acceleration in the self-modulated laser wakefield regime. Hidding, B.; Geissler, M.; Pretzler, G.; Amthor, K.-U.; Schwoerer, H.; Karsch, S.; Veisz, L.; Schmid, K.; Sauerbrey, R. // Physics of Plasmas;Apr2009, Vol. 16 Issue 4, p043105 

    Details on the generation of (multiple) quasimonoenergetic electron bunches in the self-modulated laser wakefield acceleration (SMLWFA) regime are presented. This type of laser-plasma interaction can result in pronounced longitudinal laser pulse fragmentation, dependent on plasma density and...

  • A global simulation for laser-driven MeV electrons in 50-μm-diameter fast ignition targets. Ren, C.; Tzoufras, M.; Tonge, J.; Mori, W. B.; Tsung, F. S.; Fiore, M.; Fonseca, R. A.; Silva, L. O.; Adam, J.-C.; Heron, A. // Physics of Plasmas;May2006, Vol. 13 Issue 5, p056114 

    The results from 2.5-dimensional particle-in-cell simulations for the interaction of a picosecond-long ignition laser pulse with a plasma pellet of 50-μm diameter and 40 critical density are presented. The high-density pellet is surrounded by an underdense corona and is isolated by a vacuum...

  • Measuring the electron density gradients of dense plasmas by deflectometry using short-wavelength probe. Nejdl, J.; Kozlová, M.; Mocek, T.; Rus, B. // Physics of Plasmas;Dec2010, Vol. 17 Issue 12, p122705 

    A new and simple experimental technique for the measurement of electron density gradients in dense laser-produced plasmas using an electromagnetic wave probe is presented. The main advantage of this method is the low requirements on coherence of the probing beam. The method is based on measuring...

  • Multi-GeV Electron Generation Using Texas Petawatt Laser. Wang, X.; Du, D.; Yi, S. A.; Kalmykov, S.; D'avignon, E.; Fazel, N.; Zagdzaj, R.; Reed, S.; Dong, P.; Henderson, W.; Dyer, G.; Bernstein, A.; Gaul, E.; Martinez, M.; Shvets, G.; Ditmire, T.; Downer, M. // AIP Conference Proceedings;11/5/2010, Vol. 1299 Issue 1, p209 

    We present simulation results and experimental setup for multi-GeV electron generation by a laser plasma wake field accelerator (LWFA) driven by the Texas Petawatt (TPW) laser. Simulations show that, in plasma of density ne = 2-4×1017 cm-3, the TPW laser pulse (1.1 PW, 170 fs) can self-guide...

  • Progress in Laser Wakefield Acceleration with Few-Cycle Lasers. Veisz, Laszlo; Schmid, Karl; Buck, Alexander; Sears, Chris; Mikhailova, Julia; Tautz, Raphael; Herrmann, Daniel; Geissler, Michael; Krausz, Ferenc // AIP Conference Proceedings;11/5/2010, Vol. 1299 Issue 1, p156 

    We present a novel method of controlled electron injection from the background plasma into a laser driven plasma wave using a μm-scale density transition. Substantial quality improvements on the monoenergetic electron beam are demonstrated. Furthermore we discuss the rms transverse emittance...

  • ÄŒerenkov radiation excited by an ultrashort laser pulse with oblique amplitude front. Shuvaev, A. V.; Nazarov, M. M.; Shkurinov, A. P.; Chirkin, A. S. // Radiophysics & Quantum Electronics;Oct2007, Vol. 50 Issue 10/11, p922 

    We develop the theory of generation of terahertz ÄŒerenkov radiation in a homogeneous nonlinear optical crystal if the amplitude and phase fronts of the excitation pulse do not coincide. It is shown that in the case of the nonlinear optical interaction, the use of laser pulses with oblique...

  • A picosecond time-resolved electron energy spectrometer based on Cˇerenkov radiation. Elberson, Lee N.; Ping, Yuan; Shepherd, Ronnie L.; Patel, Pravesh K.; Mackinnon, Andrew J.; Hill, Wendell T. // Review of Scientific Instruments;Feb2009, Vol. 80 Issue 2, pN.PAG 

    The energy spectrum of relativistic electrons is an important characterization of high intensity laser-matter interactions. We present a technique that utilizes Cˇerenkov radiation to measure the time-resolved energy distribution of electrons. Electrons escaping from targets irradiated by...

  • Laser Radiation Guiding in a Plasma Channel Created by a Relativistic Electron Beam. Khachatryan, A. G. // Plasma Physics Reports;Nov2001, Vol. 27 Issue 11, p967 

    The diffraction broadening of laser radiation restricts its efficient utilization in many applications. In this work, a method for laser radiation guiding in a density channel formed in a plasma by a relativistic electron beam is considered. The conditions and parameters of the relativistic beam...

  • Longitudinal profiles of plasma parameters in a laser-ignited capillary discharge and implications for laser wakefield accelerator applications. Levin, M.; Pukhov, A.; Hubbard, R. F.; Kaganovich, D.; Gordon, D. F.; Sprangle, P.; Ting, A.; Hafizi, B.; Zigler, A. // Applied Physics Letters;12/26/2005, Vol. 87 Issue 26, p261501 

    The evolution of longitudinal electron density and temperature profiles in plasma channel produced by a low-current Plexiglas capillary discharge with laser ignition was investigated by spectroscopic methods. The plasma was produced by an electric discharge using a 0.5 mm diameter, 15 mm long...

Share

Read the Article

Courtesy of THE LIBRARY OF VIRGINIA

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

Try another library?
Sign out of this library

Other Topics