Abstract
Generation of a quasi-mono-energetic electron beam with peak energy ~3 MeV and full cone divergence angle of ~3° is observed in the interaction of 45 fs, 3 TW Ti:sapphire laser beam incident on a planar carbon target surface at grazing incidence. The collimated and quasi-mono-energetic electron beam was observed when a pre-pulse pedestal of 1-ns duration was used with the main 45-fs laser pulse. The study presented on generation of spatially and spectrally concentrated multi-MeV electron beam along solid target surface could be of significance for current areas of research like fast ignition scheme of inertial confinement fusion.
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Acknowledgments
The authors would like to gratefully acknowledge the laser operation support given by R. A. Khan, R. A. Joshi, and R. K. Bhat, and the technical support for experimental setup given by R. P. Kushwaha, S. Sebastin, and K. C. Parmar, during the experiments.
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Rao, B.S., Moorti, A., Pathak, G. et al. Multi-MeV quasi-mono-energetic electron beam generation from interaction of ultraintense laser pulse with solid target at grazing incidence. Appl. Phys. B 120, 149–154 (2015). https://doi.org/10.1007/s00340-015-6115-z
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DOI: https://doi.org/10.1007/s00340-015-6115-z