Energetic proton beams from plastic targets irradiated by an ultra-intense laser pulse

Kitae Lee; Ji-Young Lee; Seong Hee Park; Yong-Ho Cha; Kyung-Nam Kim; Young Uk Jeong

doi:10.1117/12.887159

25 May 2011 Energetic proton beams from plastic targets irradiated by an ultra-intense laser pulse

Kitae Lee, Ji-Young Lee, Seong Hee Park, Yong-Ho Cha, Kyung-Nam Kim, Young Uk Jeong

Proceedings Volume 8079, Laser Acceleration of Electrons, Protons, and Ions; and Medical Applications of Laser-Generated Secondary Sources of Radiation and Particles; 80790U (2011) https://doi.org/10.1117/12.887159
Event: SPIE Optics + Optoelectronics, 2011, Prague, Czech Republic

Abstract

It has been found that more intense proton beams are generated from plastic foils than metal foils irradiated by an ultraintense laser pulse. The acceleration model, ARIE (Acceleration by a Resistively Induced Electric field) accounts for the experimental observations from plastic foils compared with metal foils. Proton beams on foil thickness and laser prepulse have been observed, which is also well described by the ARIE model. An experiment with an aluminum-coated plastic target strongly suggests that front side acceleration is a dominant acceleration process in plastic targets. We also suggest that a vacuum-sandwiched double layer target could effectively enhance the laser contrast ratio, which was investigated in the combination of a two-dimensional hydro code and a two-dimensional PIC (Particle-In-Cell) code.

Citation Download Citation

Kitae Lee, Ji-Young Lee, Seong Hee Park, Yong-Ho Cha, Kyung-Nam Kim, and Young Uk Jeong "Energetic proton beams from plastic targets irradiated by an ultra-intense laser pulse", Proc. SPIE 8079, Laser Acceleration of Electrons, Protons, and Ions; and Medical Applications of Laser-Generated Secondary Sources of Radiation and Particles, 80790U (25 May 2011); https://doi.org/10.1117/12.887159

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