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Description
This directional apodization option scales all the rays in the source to have an cosn or sinn intensity distribution based on ray direction. The following images show the source and intensity distribution for an isotropic plane of random rays emitting into a 90o cone half angle with cosn or sinn directional apodization. The functional form was cos3.
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Navigation
The cos^n or sin^n directional apodization is available on the Power tab of a Detailed Source dialog. From the Power tab, select "cos^n or sin^n in a given direction" from the drop down menu of directional apodization types.
Controls
The following table describes the available controls on the Power tab of a Detailed Source dialog. Of interest to this help topic are the Direction Apodization parameter settings.
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Control
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Inputs / Description
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Defaults
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Total Power
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Total power of the source after both the position and direction apodization functions have been applied.
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1
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Position Apodization
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Type
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Drop down menu of available position apodization options.
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Uniform
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Parameters
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Dependent on selected Type.
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Direction Apodization
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Type
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Drop down menu of available direction apodization options. Select "cos^n or sin^n in a given direction" from the drop-down menu.
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Uniform
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Parameters
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Cos/Sin
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Apodization based on the Cosine or Sine function.
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Cos
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Exp
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The exponent of the Cosine or Sine function. This exponent can be positive or negative and be integer or non-integer.
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1
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X
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X component of the direction cosine vector for the direction about which the apodization is applied.
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0
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Y
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Y component of the direction cosine vector for the direction about which the apodization is applied.
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0
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Z
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Z component of the direction cosine vector for the direction about which the apodization is applied.
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1
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OK
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Accept settings and close the dialog box.
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Cancel
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Discard settings and close the dialog box.
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Apply
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Apply settings and keep the dialog box open.
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Help
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Access this Help page.
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Related Topics
Direction Apodization - Uniform Unit Apodization
Direction Apodization - Lambertian in a given direction
Direction Apodization - Inverse Lambertian in a given direction
Direction Apodization - Gaussian
Direction Apodization - Sampled as a function of Spherical Angles
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