T-Matrix codes
======================

The code can be used without limitations in any not-for-
profit scientific research.  We only request that in any
publication using the code the source of the code be acknowledged
and relevant references (see below) be made.

This version of the code is applicable to spheroids,
Chebyshev particles, and finite circular cylinders.

The computational method is based on the Watermsn's T-matrix
approach and is described in detail in the following papers:

1.  M. I. Mishchenko, Light scattering by randomly oriented
    axially symmetric particles, J. Opt. Soc. Am. A,
    vol. 8, 871-882 (1991).

2.  M. I. Mishchenko, Light scattering by size-shape
    distributions of randomly oriented axially symmetric
    particles of a size comparable to a wavelength,
    Appl. Opt., vol. 32, 4652-4666 (1993).

3.  M. I. Mishchenko and L. D. Travis, T-matrix computations
    of light scattering by large spheroidal particles,
    Opt. Commun., vol. 109, 16-21 (1994).

4.  M. I. Mishchenko, L. D. Travis, and A. Macke, Scattering
    of light by polydisperse, randomly oriented, finite
    circular cylinders, Appl. Opt., vol. 35, 4927-4940 (1996).

5.  D. J. Wielaard, M. I. Mishchenko, A. Macke, and B. E. Carlson,
    Improved T-matrix computations for large, nonabsorbing and
    weakly absorbing nonspherical particles and comparison
    with geometrical optics approximation, Appl. Opt., vol. 36,
    4305-4313 (1997).

A general review of the T-matrix approach can be found in

6.  M. I. Mishchenko, L. D. Travis, and D. W. Mackowski,
    T-matrix computations of light scattering by nonspherical
    particles: a review, J. Quant. Spectrosc. Radiat.
    Transfer, vol. 55, 535-575 (1996).

The following paper provides a detailed user guide to the
T-matrix code:

7.  M. I. Mishchenko and L. D. Travis, Capabilities and
    limitations of a current FORTRAN implementation of the
    T-matrix method for randomly oriented, rotationally
    symmetric scatterers, J. Quant. Spectrosc. Radiat. Transfer,
    vol. 60, 309-324 (1998).
These papers are available in the .pdf format at the web site
http://www.giss.nasa.gov/~crmim/publications/
or in hardcopy upon request from Michael Mishchenko
Please e-mail your request to crmim@giss.nasa.gov.