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Optica Publishing Group
  • Conference on Lasers and Electro-Optics/Pacific Rim 2007
  • (Optica Publishing Group, 2007),
  • paper WP_071

Observation of a Narrow Spectral Bandwidth in Proton Beam with High Energy Conversion Efficiency Driven by an Ultrashort High-Intensity Ti:Sapphire Laser

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Abstract

Energetic protons with energies as high as 2.4 MeV and energy conversion efficiency from laser to proton of > 1.4% are produced by focusing an ultrashort high-intensity Ti: sapphire laser pulse. We observe a narrow bandwidth structure in the proton spectra having a small energy spread with full width at half maximum of about 7% of its absolute value near 1.9 MeV by using a collimator in front of proton energy spectrometer.

© 2007 IEEE

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