A FORTRAN code for the scattering of EM waves by a sphere with a nonconcentric spherical inclusion. (English) Zbl 0926.65094

Summary: We present a FORTRAN code for the scattering of an electromagnetic (EM) plane wave from an eccentrically placed sphere located within another sphere. This program calculates the Mueller scattering matrix elements, \(S_{ij}\), the extinction, scattering, and absorption efficiencies and the asymmetry parameter. The incident angle of the incoming plane wave, the free space wavelength, the radii, indices of refraction, and the distance of separation between the centers of the two spheres are all arbitrary. With minor modifications, the program can be made to vary in the incident beam, distance, or inclusion radius. Of particular interest is the variation in the size of the host sphere, which can be simulated to study the resonance features of a particular system. The main code and all the subroutines are in double precision to ensure a higher degree of accuracy.


65M06 Finite difference methods for initial value and initial-boundary value problems involving PDEs
78M25 Numerical methods in optics (MSC2010)
78-04 Software, source code, etc. for problems pertaining to optics and electromagnetic theory
78A45 Diffraction, scattering
35Q60 PDEs in connection with optics and electromagnetic theory


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