The code calculates the extinction, scattering and absorption
efficiency factors for n-layered spheres.
The recursive algorithm of Wu & Wang are used (see for more details
the papers cited below).
We provide the code with a test input file and
one output file. A run of the code with such an input
should lead to the results given in the output files.
The code was written in Fortran-77 and tested on PCs
and DEC Workstations.
(values of the parameters can be changed in the beginning
of the file n-miev3a.for)
Values of other parameters are specified in the input file
n-miev3.dat.
A description of the parameters is given
at the very beginning of the
code's text.
Restrictions:
Im(ri)*x
<= 20
Publications:
Wu Z.P., Wang Y.P. Electromagnetic scattering for multilaered spheres:
recursive algorithms
Radio Science 1991. V. 26. P. 1393-1401.
Voshchinnikov N.V., Mathis J.S. Calculating Cross Sections of Composite Interstellar Grains
Astrophys. J. 1999. V. 526. #1.
Questions, more information, new versions:
Dr. Nikolai Voshchinnikov
Astronomical Institute
St. Petersburg University
St. Petersburg-Peterhof
198904 Russia
e-mail:
nvv@aispbu.spb.su
The development of the new approach and the code was financially
supported by a grant of the Volkswagen Foundation (Germany).
Created by V.I.
Last modified: 21/08/99, V.I.