25 May 2011 Energetic proton beams from plastic targets irradiated by an ultra-intense laser pulse
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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.
© (2011) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Kitae Lee, Kitae Lee, Ji-Young Lee, Ji-Young Lee, Seong Hee Park, Seong Hee Park, Yong-Ho Cha, Yong-Ho Cha, Kyung-Nam Kim, Kyung-Nam Kim, Young Uk Jeong, 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); doi: 10.1117/12.887159; https://doi.org/10.1117/12.887159
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