Database of Optical Constants -- Misc: n-Mie code(s)

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Дата изменения: Fri Nov 19 16:19:10 2010
Дата индексирования: Tue Oct 2 00:31:06 2012
Кодировка:
Поисковые слова: annular solar eclipse

Light scattering by n-layered spheres

Program n-mie (version 3a)

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.

Directory content:
- n-miev3.dat (0.9 K) --- input data file
- n-miev3a.for (23.2 K) --- Fortran code
- n-test.dat (2.5 K) --- test output file
Parameters:

nterms: number of terms in Eqs. for efficiency factors

n_layers: number of layers of spherical particle.

(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.

nterms:	number of terms in Eqs. for efficiency factors
n_layers:	number of layers of spherical particle.