Scattering and transversal divergence of an ellipsoidal particle by using Vectorial Complex Ray Model

We have developed a novel model - Vectorial Complex Ray Model (VCRM) - for the scattering of a smooth surface objet of arbitrary shape. In this model, a wave is described by bundles of rays, and a ray is characterized not only by its direction and amplitude but also the curvature and the phase of the wave. These new properties allow to take into account the phase shift due to the focal lines of an arbitrary shaped wave and the amplitude due to the divergence/convergence of the wave. The interferences can therefore be calculated correctly for an arbitrarily shaped particle of smooth surface. In this paper, we present an application of the VCRM in the 2D scattering of a plane wave by a homogeneous ellipsoid at oblique incidence. The transversal divergence effect of the wave will be discussed. The rainbows of ellipsoidal droplet and bubble are investigated.

► Vectorial Complex Ray Model (VCRM) for the scattering of an arbitrary shaped objet is presented. ► Curvature and phase of wave are taken into account in the ray model. ► VCRM is applied in scattering of ellipsoid at oblique incidence. ► Transversal divergence of wave by an ellipsoid is discussed and the rainbows of ellipsoid droplet and bubble are investigated.