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arXiv · 1609.09567

High Efficiency Gamma-Ray Flash Generation via Multiple Compton Scattering

Z. Gong·R. H. Hu·Y. R. Shou·B. Qiao·C. E. Chen·X. T. He·S. S. Bulanov·T. Zh. Esirkepov·S. V. Bulanov·X. Q. Yan
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Abstract

Gamma-ray flash generation in near critical density (NCD) target irradiated by four symmetrical colliding laser pulses is numerically investigated. With peak intensities about $10^{23}$ W/cm$^2$, the laser pulses boost electron energy through direct laser acceleration, while pushing them inward with the ponderomotive force. After backscattering with counter-propagating laser, the accelerated electron is trapped in the optical lattice or the electromagnetic standing waves (SW) created by the coherent overlapping of the laser pulses, and emits gamma-ray photons in Multiple Compton Scattering regime, where electrons act as a medium transferring energy from the laser to gamma-rays. The energy conversion rate from laser pulses to gamma-ray can be as high as 50\%

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Z. Gong, R. H. Hu, Y. R. Shou, B. Qiao, C. E. Chen, X. T. He, S. S. Bulanov, T. Zh. Esirkepov, S. V. Bulanov, X. Q. Yan. 2016-10-04. High Efficiency Gamma-Ray Flash Generation via Multiple Compton Scattering. https://doi.org/10.1103/physreve.95.013210

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