Abstract
In this research, we studied the interaction between the ultra-intense laser and multiple copper layers covered with multiple hydrogen layers. The research conditions are based on the symmetric and asymmetric structure of multilayer copper and hydrogen. It was found that the acceleration obtained from the first copper and hydrogen layer plasma was higher and occurred earlier than the second copper and hydrogen layer plasma. We investigated the spatial distribution and phase-space distribution of copper electrons, copper ions, hydrogen electrons, and hydrogen protons with different widths of the front hydrogen layer and the front copper layer, respectively. Theoretical simulations show that when the ultra-intense laser was irradiated in multiple copper layers coated with multiple hydrogen layers targets, some plasma phase-space distribution varied clearly in the different thicknesses of the first hydrogen layer or first copper layer, while some plasma were not influenced by the thickness of these two layers.
Highlights
Key Laboratory of Icing and Anti/De-Icing, China Aerodynamics Research and Development Center, Rocket Force University of Engineering, Xi’an 710025, China
We investigated theoretical simulations of the interaction between the ultra-intense laser pulses and multiple copper layers coated with multiple hydrogen layers
The simulation results showed that the acceleration of the layer of hydrogen protons was increased in the vertical direction at the beginning, which first layer of hydrogen protons was in the vertical direction at the beginning, which started to spread in both leftincreased and right horizontal directions
Summary
Laser-driven plasma electron acceleration has obtained wide consideration due to the potential for fabricating small-scale accelerators [1]. In 2012, ultra-short, ultraintense laser interaction with the uniform and parabolic plasma density profiles were simulated and analyzed, which showed that a parabolic plasma density profile can provide better guidance for the ultra-short and ultra-intense pulse They found self-guiding can be realized by relativistic self-focusing in uniform plasma at higher densities. In 2017, Dragos Tatomirescu et al studied the characteristics of an accelerated ion beam while changing the target parameters with constant laser pulse parameters They studied the spatial distribution of particle beams, maximum particle energy, etc. The theoretical results of the interaction of short intense laser pulses and diluted plasma, the plasma wave formation, wave-breaking, and slingshot effect were reported by the Gaetano Fiore group in 2018 [15]. In 2019, W.J. Ma reported the interaction between ultra-intense femtosecond laser pulses and double-layer targets composed with under-dense plasma and ultra-thin foils. Other plasma spatial distributions and phase-space distributions did not change under the various thicknesses of the first hydrogen or copper layers
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