Laser Accelerated, High Quality Ion Beams |
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Authors: | M. Roth A. Blazevic E. Brambrink M. Geissel T. E. Cowan J. Fuchs A. Kemp H. Ruhl P. Audebert J. Cobble J. Fernandez M. Hegelich S. Letzring K. Ledingham P. McKenna R. Clarke D. Neely S. Karsch D. Habs J. Schreiber |
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Affiliation: | 1. University of Technology Darmstadt, Darmstadt, Germany 10. Gesellschaft f. Schwerionenforschung, Darmstadt, Germany 2. Laboratoire pour l’Utilisation des Lasers Intense, Palaiseau, France 3. Sandia National Laboratories, Albuquerque, NM, USA 4. University of Nevada, Reno, NV, USA 5. Universit?t Bochum, Bochum, Germany 6. Los Alamos National Laboratory, Los Alamos, NM, USA 7. Ludwigs Maximilian Universit?t, München, Germany 8. University of Strathclyde, Glasgow, UK 9. Rutherford Appleton Laboratory, Didcot, UK
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Abstract: | Intense beams of protons and heavy ions have been observed in ultra-intense laser-solid interaction experiments. Thereby, a considerable fraction of the laser energy is transferred to collimated beams of energetic ions (e.g. up to 50 MeV protons; 100 MeV fluorine), which makes these beams highly interesting for various applications. Experimental results indicate very short pulse duration and an excellent beam quality, leading to beam intensities in the TW range. To characterize the beam quality and its dependence on laser parameters and target conditions, we performed experiments at several high-power laser systems. We found a strong dependence on the target rear surface conditions allowing to tailor the ion beam by an appropriate target design. We also succeeded in the generation of heavy ion beams by suppressing the proton amount at the target surface. We will present recent experimental results demonstrating a transverse beam emittance far superior to accelerator-based ion beams. Finally, we will discuss the prospect of laser-accelerated ion beams as new diagnostics in laser-solid interaction experiements. Special fields of interest are proton radiography, electric field imaging, and relativistic electron transport inside the target. |
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Keywords: | fast ignition high power lasers laser generated ions |
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