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

Matter and Radiation at Extremes - Tập 3 - Trang 293-299 - 2018
D. Wu1,2, W. Yu1, Y.T. Zhao2, S. Fritzsche3,4, X.T. He5
1State Key Laboratory of High Field Laser Physics, Shanghai Institute of Optics and Fine Mechanics, 201800 Shanghai, China
2College of Science, Xi'an Jiaotong University, Xi'an 710049, China
3Helmholtz Institute Jena, D-07743 Jena, Germany
4Theoretisch-Physikalisches Institut, Friedrich-Schiller-University Jena, D-07743 Jena, Germany
5Key Laboratory of HEDP of the Ministry of Education, CAPT, State Key Laboratory of Nuclear Physics and Technology, Peking University, Beijing, 100871, China

Tóm tắt

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.

Tài liệu tham khảo

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