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Physics of Plasmas / Volume 13 / Issue 11 / ARTICLES / Lasers, Particle Beams, Accelerators, Radiation Generation

Phys. Plasmas 13, 113107 (2006); http://dx.doi.org/10.1063/1.2366546 (8 pages)

Double-pulse THz radiation bursts from laser-plasma acceleration

R. A. Bosch

Synchrotron Radiation Center, University of Wisconsin-Madison, 3731 Schneider Drive, Stoughton, Wisconsin 53589

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(Received 2 August 2006; accepted 29 September 2006; published online 15 November 2006)

A model is presented for coherent THz radiation produced when an electron bunch undergoes laser-plasma acceleration and then exits axially from a plasma column. Radiation produced when the bunch is accelerated is superimposed with transition radiation from the bunch exiting the plasma. Computations give a double-pulse burst of radiation comparable to recent observations. The duration of each pulse very nearly equals the electron bunch length, while the time separation between pulses is proportional to the distance between the points where the bunch is accelerated and where it exits the plasma. The relative magnitude of the two pulses depends upon by the radius of the plasma column. Thus, the radiation bursts may be useful in diagnosing the electron bunch length, the location of the bunch’s acceleration, and the plasma radius.

© 2006 American Institute of Physics

Article Outline

  1. INTRODUCTION
  2. RADIATION FROM A BUNCH EXITING A PLASMA
  3. BUNCH MOVING AT CONSTANT VELOCITY
  4. ACCELERATED BUNCH
  5. TIME STRUCTURE
  6. COMPUTED RADIATION BURSTS
  7. CONCLUSION

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KEYWORDS and PACS

Keywords

plasma light propagation, particle beam bunching, electron beams, plasma-beam interactions

PACS

  • 52.38.Kd

    Laser-plasma acceleration of electrons and ions

  • 52.25.Os

    Emission, absorption, and scattering of electromagnetic radiation

  • 52.40.Mj

    Particle beam interactions in plasmas

ARTICLE DATA

Digital Object Identifier
http://dx.doi.org/10.1063/1.2366546

PUBLICATION DATA

ISSN

1070-664X (print)  
1089-7674 (online)

Publisher

$abstract.society.value is a Member of CrossRef American Institute of Physics

For access to fully linked references, you need to log in.
    W. P. Leemans, C. G. R. Geddes, J. Faure, Cs. Tóth, J. van Tilborg, C. B. Schroeder, E. Esarey, G. Fubiani, D. Auerbach, B. Marcelis, M. A. Carnahan, R. A. Kaindl, J. Byrd, and M. C. Martin, Phys. Rev. Lett. 91, 074802 (2003).

    C. B. Schroeder, E. Esarey, J. van Tilborg, and W. P. Leemans, Phys. Rev. E 69, 016501 (2004).

    J. van Tilborg, C. B. Schroeder, C. V. Filip, Cs. Tóth, C. G. R. Geddes, G. Fubiani, R. Huber, R. A. Kaindl, E. Esarey, and W. P. Leemans, Phys. Rev. Lett. 96, 014801 (2006).

    J. van Tilborg, C. B. Schroeder, C. V. Filip, Cs. Tóth, C. G. R. Geddes, G. Fubiani, E. Esarey, and W. P. Leemans, Phys. Plasmas 13, 056704 (2006)PHPAEN000013000005056704000001.

    F. S. Tsung, W. Lu, M. Tzoufras, W. B. Mori, C. Joshi, J. M. Vieira, L. O. Silva, and R. A. Fonseca, Phys. Plasmas 13, 056708 (2006)PHPAEN000013000005056708000001.

    R. A. Bosch, Phys. Rev. ST Accel. Beams 5, 020701 (2002).

    R. A. Bosch, Rev. Sci. Instrum. 73, 1423 (2002)RSINAK000073000003001423000001.


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