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贝塞尔波束自产生以来,凭借其无衍射、自修复特性已经获得了越来越多学者的关注。基于广义洛伦兹米理论,将在轴贝塞尔波束与手征介质球相互作用的入射场及散射场展开为球矢量波函数的表达式。结合球矢量波函数的正交完备性及电磁场的连续性边界条件,推导出了在轴零阶贝塞尔波束对手征介质球电磁散射的解析解。数值模拟了散射强度随散射角的分布,将在轴贝塞尔波束退化为平面波照射手征介质球的散射结果与文献比较,吻合得较好。分析了波束及介质球参数、介质球偏离波束中心位置对散射强度的影响。该理论为手征材料和手征涂覆目标在微波工程及目标隐身中的应用提供了很好的理论应用价值。
Bezier beams have attracted more and more scholars’ attention due to their non-diffraction and self-healing characteristics. Based on the generalized Lorentz-meter theory, the incident and scattered fields of the interaction between the axis Bessel beam and the chiral medium sphere are expanded into the expression of the vector function of the spherical vector. Based on the orthogonal completeness of spherical vector wave function and the continuity boundary condition of electromagnetic field, an analytical solution of the electromagnetic scattering from the zeroth-order Bessel beam on the chiral medium sphere is deduced. The distribution of scattering intensity with scattering angle is numerically simulated. The results of scattering the birefringence beam with the Bessel beam degenerated into a plane wave are compared with those in the literature, which are in good agreement. The influence of the parameters of the beam and the medium sphere on the scattering intensity is analyzed. The theory provides a good theoretical application value for the application of chiral materials and chiral coating targets in microwave engineering and target stealth.