宁夏大学学报(自然科学版)
寧夏大學學報(自然科學版)
저하대학학보(자연과학판)
2014年
2期
126-129
,共4页
局部带电%椭球%场强分布%平面波
跼部帶電%橢毬%場彊分佈%平麵波
국부대전%타구%장강분포%평면파
partially charged%ellipsoid%electromagnetic field distribution
颗粒内部场强决定了粒子散射场强度及其对入射电磁波的吸收作用。借助椭球面的等效球面微元半径及带电球体粒子的 Mie 散射理论讨论了平面波入射下局部带电椭球体内外场强分布,并与不带电椭球粒子的结果进行了比较。数值结果表明:颗粒表面电荷显著改变了颗粒内外电磁场的分布规律及其强度,从而影响粒子的电磁散射性质。
顆粒內部場彊決定瞭粒子散射場彊度及其對入射電磁波的吸收作用。藉助橢毬麵的等效毬麵微元半徑及帶電毬體粒子的 Mie 散射理論討論瞭平麵波入射下跼部帶電橢毬體內外場彊分佈,併與不帶電橢毬粒子的結果進行瞭比較。數值結果錶明:顆粒錶麵電荷顯著改變瞭顆粒內外電磁場的分佈規律及其彊度,從而影響粒子的電磁散射性質。
과립내부장강결정료입자산사장강도급기대입사전자파적흡수작용。차조타구면적등효구면미원반경급대전구체입자적 Mie 산사이론토론료평면파입사하국부대전타구체내외장강분포,병여불대전타구입자적결과진행료비교。수치결과표명:과립표면전하현저개변료과립내외전자장적분포규률급기강도,종이영향입자적전자산사성질。
The intensity of scattering field and the wave absorption properties of particle is determined by the internal electromagnetic field of particle.Based on the equivalent radius of the micro-surface for ellipsoid and the Mie scattering theory,we discuss the electromagnetic field distribution for a partially charged spheroid which illuminated by a plane wave,and make a comparison with uncharged particle.The numerical simulation results show that the surface charges have a significant effect on the internal and the external electromagnetic field distribution for particle, and hence influence its electromagnetic wave attenuation properties.