NeutronAttenuation:

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   Neutron attenuation with LiH.
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   Form:
   f = NeutronAttenuation( t )
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   ------
   Inputs
   ------
   t        (1,:) Thickness (cm)

   -------
   Outputs
   -------
   f        (1,:) Attenuation factor

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Children:

Common: Graphics/Plot2D