Figure 2.

(a) and (b) Backscattering distributions obtained from Monte Carlo simulations at small radial distances corresponding to the phase functions shown in Fig. 1. (c) Scattering angle distribution for rays at three exit radii ($r=l_s^{*}∕100$,$r=l_s^{*}∕10$, and $r=l_s^{*}$) for a scattering media with g = 0.9 and m = 3/2. Note that the distributions in (c) differ from the actual phase function because each backscattered ray has an equal contribution (as opposed to each scattering event having an equal contribution). The distribution of scattering angles is heavily weighted toward forward and backward scattering events for $r∕l_s^{*}\ll 1$, indicating that a large majority of rays collected at small radii undergo primarily forward and backward scattering.