Laser-plasma accelerated protons: Energy increase in gas-mixtures using high mass number atomic species

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Abstract

The idea of using a gas-mixture comprising atoms with a high mass number in order to increase proton energies in laser induced plasma acceleration at critical density is investigated by means of 2D PIC (Particle-In-Cell) simulations. Comparing and discussing the case of a pure hydrogen plasma and that of a plasma containing higher mass number species with a small percentage of hydrogen, we demonstrate that the mixture enhances the energies of the accelerated protons. We also show that using a gas-mixture introduces the possibility of using the densities ratio in order to change the relative acceleration of the species.

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Levato, T., Goncalves, L. V., & Giannini, V. (2019). Laser-plasma accelerated protons: Energy increase in gas-mixtures using high mass number atomic species. Fluids, 4(3). https://doi.org/10.3390/fluids4030150

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