【導(dǎo)讀】光傳播時因與物質(zhì)中分子或原子作用而改變其光強的空間分布、偏振狀態(tài)或頻率的過程，稱為光的散射現(xiàn)象[1]。研究各種粒子的光散射特性一直是電磁光波傳播和散射理論中的重要課題。光學(xué)測量技術(shù)以其非直接接觸、準確、快速等優(yōu)點，一直受到科研人員和工程技術(shù)人員的重視。在自然界中出現(xiàn)的彩虹是一種常見的大氣光學(xué)現(xiàn)象，其產(chǎn)生的本質(zhì)是由于大氣粒子對光波的散射和吸收而引起的。在燃燒技術(shù)中，可利用大量燃燒生成物組成的顆粒系對激光束散射強度的測量來研究燃燒的過程以及燃料燃燒的程度[9-10]。因此研究粒子對激光束的散射有著重要的理論價值和實際應(yīng)用前景。為了研究方便，人們起初將生產(chǎn)實踐中的各種形狀粒子簡化成一個各向同性的均勻球形粒子，這種模型是最簡單、最理想的，事實上也是對許多問題的一個很好的近似。本課題主要研究基于Mie理論的同心雙層球?qū)ζ矫娌ǖ纳⑸洹?

　　

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