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A study of picosecond laser–solid interactions up to 1019 W cm−2
Physics of Plasmas · 1997 · Vol. 4(2) · pp. 447–457
F. N. Beg✉(Imperial College London)A. R. Bell(Imperial College London)A. E. Dangor(Imperial College London)C. Danson(Imperial College London)A.P. Fews(Imperial College London)Michael E. Glinsky(Imperial College London)B. A. Hammel(Imperial College London)Paul Lee(Imperial College London)P. A. Norreys(Imperial College London)M. Tatarakis(Imperial College London)
Abstract
The interaction of a 1053 nm picosecond laser pulse with a solid target has been studied for focused intensities of up to 1019 W cm−2. The maximum ion energy cutoff Emax (which is related to the hot electron temperature) is in the range 1.0–12.0 MeV and is shown to scale as Emax≈I1/3. The hot electron temperatures were in the range 70–400 keV for intensities up to 5×1018 W cm−2 with an indication of a high absorption of laser energy. Measurements of x-ray/γ-ray bremsstrahlung emission suggest the existence of at least two electron temperatures. Collimation of the plasma flow has been observed by optical probing techniques.
Laser-Plasma Interactions and DiagnosticsLaser-induced spectroscopy and plasmaIon-surface interactions and analysisBremsstrahlungPhysicsAtomic physicsPlasmaPicosecondElectronLaserRange (aeronautics)Electron temperatureAbsorption (acoustics)
Funding
- Engineering and Physical Sciences Research Council
- Central Laser Facility, Science and Technology Facilities Council
- Lawrence Livermore National Laboratory
Citations
630
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22.76
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References
54
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99%
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References
Ignition and high gain with ultrapowerful lasers*
Physics of Plasmas · 1994 · 2,985 citations
Compression of amplified chirped optical pulses
Optics Communications · 1985 · 3,770 citations
Interaction of an ultrashort, relativistically strong laser pulse with an overdense plasma
Physics of Plasmas · 1994 · 472 citations
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