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I came across a paper that reads

It is noteworthy that for a sample without lateral light propagation in the material, i.e. [reduced scattering] $\mu_s' = \infty$ and [absorption] $\mu_a=0$, ...

If there is no lateral light propagation from a collimated beam irradiating the surface of a turbid media, then this will mean that there is no scattering. Therefore, is the statement incorrect or what is the author indicating?

Reference:

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  • $\begingroup$ Maybe this is about the non-collimated case? Like sunlight in snow? Then there is no lateral transport of energy. $\endgroup$ – Pieter Feb 10 at 10:53
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Yes. The statement is correct. Under an infinite scattering coefficient means wave will travel an infinite distance before it experiences a scattering. In other words, photons will not deviate to any lateral angle.

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