If you run DDSCAT using the command ddscat >& ddscat.out & you will have various types of ASCII files when the computation is complete:
,
, and 
are printed after each iteration; you will be able
to judge the degree to which convergence has been achieved.
Unless TIMEIT has been disabled, there will also be timing information.
The file mtable contains a summary of the dielectric constant used in the calculations.
The file qtable contains a summary of the orientationally-averaged values
of , , 
,
, and 
.
Here , , and are the extinction, absorption,
and scattering cross sections divided by
.
is the differential cross section for backscattering (area per sr)
divided by .
The file qtable2 contains a summary of the orientationally-averaged
values of , 
, and 
.
Here is the ``phase shift'' cross section
divided by (see definition in Draine 1988).
is the ``polarization efficiency factor'',
equal to the difference between for the two
orthogonal polarization states.
We define a ``circular polarization efficiency factor''
,
since an optically-thin medium with a small twist in the alignment
direction will produce circular polarization in initially unpolarized light in
proportion to .
For each wavelength and size, DDSCAT.5a produces a file with a name of the formwxxryyori.avg, where index xx (=00, 01, 02....) designates the wavelength and index yy (=00, 01, 02...) designates the ``radius''; this file contains Q values and scattering information averaged over however many target orientations have been specified (see §16. The file w00r00ori.avg produced by the sample calculation is provided below in Appendix B.
In addition, if ddscat.par has specified IWRKSC=1 (as for the sample calculation), DDSCAT.5a will generate files with names of the form wxxryykzzz.avg, where xx and yy are as before, and index zzz =(000,001,002...) designates the target orientation; these files contain Q values and scattering information for each of the target orientations. The structure of each of these files is very similar to that of the wxxryyori.avg files. Because these files may not be of particular interest, and take up disk space, you may choose to set IWRKSC=0 in future work. However, it is suggested that you run the sample calculation with IWRKSC=1.
The sample ddscat.par file specifies IWRKSC=1 and calls for use of 1 wavelength, 1 target size, and averaging over 3 target orientations. Running DDSCAT.5a with the sample ddscat.par file will therefore generate files w00r00k000.sca, w00r00k001.sca, and w00r00k002.sca . To understand the information contained in one of these files, please consult Appendix C, which contains an example of the file w00r00k000.sca produced in the sample calculation.