Matter and Radiation at Extremes, 2018, 3 (6): 293, Published Online: Mar. 14, 2019  

Characteristics of X/γ-ray radiations by intense laser interactions with high-Z solids: The role of bremsstrahlung and radiation reactions

Author Affiliations
1 State Key Laboratory of High Field Laser Physics, Shanghai Institute of Optics and Fine Mechanics, 201800 Shanghai, China
2 College of Science, Xi'an Jiaotong University, Xi'an 710049, China
3 Helmholtz Institute Jena, D-07743 Jena, Germany
4 Theoretisch-Physikalisches Institut, Friedrich-Schiller-University Jena, D-07743 Jena, Germany
5 Key Laboratory of HEDP of the Ministry of Education, CAPT, State Key Laboratory of Nuclear Physics and Technology, Peking University, Beijing, 100871, China
Abstract
In this work, characteristics of X/γ-ray radiations by intense laser interactions with high-Z solids are investigated by means of a newly developed particle-in-cell (PIC) simulation code. The PIC code takes advantage of the recently developed ionization and collision dynamics models, which make it possible to model different types of materials based on their intrinsic atomic properties. Within the simulations, both bremsstrahlung and nonlinear Compton scatterings have been included. Different target materials and laser intensities are considered for studying the parameter-dependent features of X/γ-ray radiations. The relative strength and angular distributions of X/γ ray productions from bremsstrahlung and nonlinear Compton scatterings are compared to each other. The threshold under which the nonlinear Compton scatterings become dominant over bremsstrahlung is also outlined.

D. Wu, W. Yu, Y.T. Zhao, S. Fritzsche, X.T. He. Characteristics of X/γ-ray radiations by intense laser interactions with high-Z solids: The role of bremsstrahlung and radiation reactions[J]. Matter and Radiation at Extremes, 2018, 3(6): 293.

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