A multiple sphere T-matrix Fortran code for use on parallel computer clusters

A general-purpose Fortran-90 code for calculation of the electromagnetic scattering and absorption properties of multiple sphere clusters is described. The code can calculate the efficiency factors and scattering matrix elements of the cluster for either fixed or random orientation with respect to the incident beam and for plane wave or localized-approximation Gaussian incident fields. In addition, the code can calculate maps of the electric field both interior and exterior to the spheres. The code is written with message passing interface instructions to enable the use on distributed memory compute clusters, and for such platforms the code can make feasible the calculation of absorption, scattering, and general EM characteristics of systems containing several thousand spheres.

► A Fortran-90 code for multiple sphere scattering is described. ► The code can calculate both fixed and random-orientation properties. ► Near-field calculations, and incident Gaussian beams, are included. ► The code can be run on parallel computer clusters. ► The code makes feasible calculations on targets containing 1000s of spheres.