class Double_Interaction_BRDF_Model
The class Double_Interaction_BRDF_Model
implements the double interaction model for light
scattering from a spherical particle above a surface. The
class also inherits dielectric_stack, allowing it to
calculate the scattering from a particle above a film
stack.
Parameters:
| Parameter | Data Type | Description | Default |
|---|---|---|---|
| lambda | double | Wavelength of the light
in vacuum [µm]. (Inherited from BRDF_Model.) |
0.532 |
| type | int | Indicates
whether scattering is evaluated in reflection (0) or
transmission (1). (Inherited from BRDF_Model.) |
0 |
| substrate | dielectric_function | The
optical constants of the substrate, expressed as a
complex number (n,k) or, optionally, as a function of
wavelength. (Inherited from BRDF_Model.) |
(4.05,0.05) |
| density | double | The
surface number density of local scatterers
[µm-2]. (Inherited from Local_BRDF_Model.) |
1 |
| stack | dielectric_stack | Description of any stack
of films deposited on the substrate, usually specified
by a file. See dielectric_stack, for more
information. |
no films |
| distance | double | The distance from the surface to the center of the particle [µm]. For a sphere touching a surface, the distance should be the same as the sphere's radius. | 0.05 |
| scatterer | SphericalScatterer_Ptr | The model
describing the scattering by a spherically-symmetric
scatterer.. |
MieScatterer |
| alpha | double | The rotation of the particle about the z-axis [rad]. This parameter only has an effect if the particle is non-spherical and non-axially symmetric. | 0 |
| beta | double | The rotation of the particle about the y-axis [rad]. This rotation follows the rotation alpha about the z-axis. This parameter only has an effect if the particle is non-spherical and non-axially symmetric. | 0 |
See also:
SCATMECH Home, Conventions, BRDF_Model, Local_BRDF_Model, Abstract class SphericalScatterer, class RayleighScatterer, class RayleighGansScatterer, class MieScatterer, dielectric_stack
K. B. Nahm and W. L. Wolfe, "Light-scattering models for spheres on a conducting plane: comparison with experiment," Appl. Opt. 26, 2995-2999 (1987).
T. A. Germer, "Angular dependence and polarization of out-of-plane optical scattering from particulate contamination, subsurface defects, and surface microroughness," Appl. Opt. 36, 8798-8805 (1997).
Include file:
#include "sphprt.h"
Source code:
sphprt.cpp
Definition of public elements:
class Double_Interaction_BRDF_Model
: public Local_BRDF_Model
{
};
For More Information
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Current SCATMECH version: 6.00 (February 2008)
This page first online: Version 1.00 (March 2000)
This page last modified: Version 6.00 (February 2008)