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In astrophysics, the optical constants mainly are used to calculate
the optical properties of scatterers, i.e. cross-sections,
scattering matrix, etc. For many applications,
it is necessary to understand general trends in the data.
This understanding often can be gained from consideration
of results obtained by simplified scattering models.
Optical properties derived from such models have been discussed
in some books (see, e.g., [2,3]) and in principle can be calculated
by using various light-scattering tools which are freely available via
the internet [4].
Nevertheless, there is a definite necessity of a WWW database
devoted to systematic consideration of the optical properties
of various model scatterers and related topics. As of this writing,
our database will include:
original codes realizing different methods to calculate
the optical properties of nonspherical (inhomogeneous) particles;
review(s) of exact and approximate methods of light scattering theory
(incl. discussion of their applicability ranges);
a database of several thousands references to papers on various
aspects of light scattering theory and its applications;
a graphics library illustrating light scattering by
particles of different size/shape/ structure
(a part of the data will be in tabular form to serve
as benchmarks);
a special tool to calculate on-line selected optical characteristics
of different scatterers (homogeneous and core-mantle spheres, infinite
cylinders, spheroids, etc.);
a self-training algorithm of determination of the optical
properties of fractal-like clusters;
a collection of links to related internet resources.
The work on all the parts of the DOP is either in progress or
has been finished. It is undertaken by several persons
from different institutes of former Soviet Union countries
under support of an INTAS grant.
The DOP will be (partly) available via the Internet [5]
upon its completion scheduled at the end of 2002.
Because of the large volume due to the graphics library,
the whole database may be available only on CDs.
Next:Examples of data contained Up:Electronic database Previous:Future plans
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2003-03-06