DDA solution for polarization considering a gold nanorod shows an interesting pattern. The well-documented pattern (i.e. maximum @90°and minimum @180°) was obtained when the transverse wavelength was considered and beta, theta, and phi were set to zero. Using the same settings, the polarization patterns obtained for the longitudinal wavelength show patterns which deviate from their physical picture. 

The parameter file is attached herewith along with the obtained pattern.

Please suggest the required modification that I need to make to obtain correct polarization pattern.

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