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High brightness keV harmonics from relativistically oscillating plasma surfaces

The European Physical Journal Special Topics volume 175, pages 57–60 (2009)Cite this article

Abstract

X-ray harmonic radiation extending to 3.3 Å, 3.8 keV from Petawatt class laser-solid interactions is presented. The harmonic spectra display a relativistic limit scaling up to ~3000th order, above which an intensity dependent scaling roll-over is observed. Highly directional beamed emission for harmonic photon energy hν > 1 keV is found to be into a cone angle < 4°, significantly less than that of the incident laser cone (20°).

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Authors and Affiliations

  1. Department of Physics and Astronomy, Queen’s University, Belfast, BT7 1NN, UK

    B. Dromey, D. Adams, S. Kar, K. Markey, P. T. Simpson & M. Zepf

  2. Blackett Laboratory, Imperial College, London, SW7 2BZ, UK

    C. Bellei, J. S. Green, S. Kneip, S. R. Nagel, L. Willingale, Z. Najmudin & K. Krushelnick

  3. SUPA, Department of Physics, University of Strathclyde, Glasgow, G4 0NG, UK

    D. C. Carroll & P. McKenna

  4. Central Laser Facility, CCLRC Rutherford Appleton Laboratory, Chilton, Didcot, OX11 0QX, UK

    R. J. Clarke, D. Neely & P. A. Norreys

Authors
  1. B. Dromey
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  2. D. Adams
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  3. S. Kar
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  4. C. Bellei
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  5. D. C. Carroll
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  6. R. J. Clarke
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  7. J. S. Green
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  8. S. Kneip
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  9. K. Markey
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  10. S. R. Nagel
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  11. P. T. Simpson
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  12. L. Willingale
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  13. P. McKenna
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  14. D. Neely
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  15. Z. Najmudin
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  16. K. Krushelnick
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  17. P. A. Norreys
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  18. M. Zepf
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Corresponding author

Correspondence to B. Dromey.

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Dromey, B., Adams, D., Kar, S. et al. High brightness keV harmonics from relativistically oscillating plasma surfaces. Eur. Phys. J. Spec. Top. 175, 57–60 (2009). https://doi.org/10.1140/epjst/e2009-01117-4

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  • DOI: https://doi.org/10.1140/epjst/e2009-01117-4

Keywords

  • European Physical Journal Special Topic
  • Relativistic Limit
  • Solid Target
  • Harmonic Order
  • Harmonic Spectrum