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Report No.

Highly collimated Quasi-monochromatic laser-driven proton beam generation by target holder having conical cavity

Nishiuchi, Mamiko; Pirozhkov, A. S.; Sakaki, Hironao; Ogura, Koichi; Esirkepov, T. Z.; Tanimoto, Tsuyoshi; Yogo, Akifumi; Hori, Toshihiko; Sagisaka, Akito; Fukuda, Yuji; Kanasaki, Masato; Matsumoto, Yoshihiro; Entani, Shiro; Sakai, Seiji; Brenner, C.*; Neely, D.*; Bulanov, S. V.; Kondo, Kiminori

We have successfully accelerate quasi-mono-energetic collimated 7MeV proton beam bt the interaction between the 2J 60fs Ti Sappire laser pulses with the thin-foil target on the target holder with conical cavity. The focusing and energy selection is by the E-field induced along the surface of the conical cavity by the point charge brought away by the escape electrons.



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