中国物理B ›› 2014, Vol. 23 ›› Issue (6): 63301-063301.doi: 10.1088/1674-1056/23/6/063301

• ATOMIC AND MOLECULAR PHYSICS • 上一篇    下一篇

Scattering of particles in wave beam based on series expansion

李应乐a, 李瑾a, 董群锋b, 王明军b   

  1. a Shaanxi Xueqian Normal University, Xi'an 710100, China;
    b Institute of Radio Wave Propagation & Scattering, Xianyang Normal University, Xianyang 712000, China
  • 收稿日期:2013-09-28 修回日期:2013-12-17 出版日期:2014-06-15 发布日期:2014-06-15
  • 基金资助:
    Project supported by the National Natural Science Foundation of China (Grant Nos. 60971079, 61271110, and 61102018).

Scattering of particles in wave beam based on series expansion

Li Ying-Le (李应乐)a, Li Jin (李瑾)a, Dong Qun-Feng (董群锋)b, Wang Ming-Jun (王明军)b   

  1. a Shaanxi Xueqian Normal University, Xi'an 710100, China;
    b Institute of Radio Wave Propagation & Scattering, Xianyang Normal University, Xianyang 712000, China
  • Received:2013-09-28 Revised:2013-12-17 Online:2014-06-15 Published:2014-06-15
  • Contact: Li Ying-Le E-mail:liyinglexidian@126.com
  • Supported by:
    Project supported by the National Natural Science Foundation of China (Grant Nos. 60971079, 61271110, and 61102018).

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摘要： Based on the orthogonalities of the vector wave functions, the expressions of scattering fields are developed as the particle in the zero order field and in the first order fields of x, y, and z, respectively. A general relation between the expansion coefficients of scattering field and incident field is presented. Taking the elliptical beam for example, the scattering property of a particle in beam is investigated. After analyzing the effects of the beam waist, irradiating distance, etc. on scattering property, the validity of the proposed algorithm is demonstrated. Results show that the beam waist may improve the particle identification property and the particle has a strong scattering both in the forward direction and in the backward direction. The method proposed is simple and is a new way of researching the scattering from particles in electromagnetic beams.

关键词: scattering, electromagnetic beam, Gaussian beam

Abstract: Based on the orthogonalities of the vector wave functions, the expressions of scattering fields are developed as the particle in the zero order field and in the first order fields of x, y, and z, respectively. A general relation between the expansion coefficients of scattering field and incident field is presented. Taking the elliptical beam for example, the scattering property of a particle in beam is investigated. After analyzing the effects of the beam waist, irradiating distance, etc. on scattering property, the validity of the proposed algorithm is demonstrated. Results show that the beam waist may improve the particle identification property and the particle has a strong scattering both in the forward direction and in the backward direction. The method proposed is simple and is a new way of researching the scattering from particles in electromagnetic beams.

Key words: scattering, electromagnetic beam, Gaussian beam

中图分类号:  (Raman and Rayleigh spectra (including optical scattering) ?)

  • 33.20.Fb
52.25.Os (Emission, absorption, and scattering of electromagnetic radiation ?) 42.25.Bs (Wave propagation, transmission and absorption)