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[求助] 请问在DDSCAT 7.3 的ddscat.par中如何设置入射波方向,计算后向散射的Qsca?

请问在DDSCAT 7.3  的ddscat.par中如何设置这两项,如何定义入射波方向,如何计算后向散射的散射效率Qsca?
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
’**** Define Incident Polarizations ****’
(0,0) (1.,0.) (0.,0.) = Polarization state e01 (k along x axis)
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
’**** Specify Scattered Directions ****’
’LFRAME’ = CMDFRM (LFRAME, TFRAME for Lab Frame or Target Frame)
2 = NPLANES = number of scattering planes
0.  0.  180.  5 = phi, thetan_min, thetan_max, dtheta (in deg) for plane 1
90.  0.  180.  5 = phi, thetan_min, thetan_max, dtheta (in deg) for plane 2
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
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