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Proton acceleration to 40 MeV using a high intensity, high contrast optical parametric chirped-pulse
Koichi Ogura1, Mamiko Nishiuchi, Alexander S Pirozhkov
1Japan Atomic Energy Agency, Kansai Photon Science Institute, 8-1-7 Umemidai, Kizugawa, Kyoto 619-0215, Japan. ogura.koichi@jaea.go.jp
Optics Letters
|July 25, 2012
Abstract:
Using a high-contrast (10(10):1) and high-intensity (10(21) W/cm(2)) laser pulse with the duration of 40 fs from an optical parametric chirped-pulse amplification/Ti:sapphire laser, a 40 MeV proton bunch is obtained, which is a record for laser pulse with energy less than 10 J. The efficiency for generation of protons with kinetic energy above 15 MeV is 0.1%.
