The linear Boltzmann equation for the uansport of neuual atoms in highly ionized plasmas is compared with the neutron transport equation. It is shown that, when the plasma is isotropic, the neutral transport equation can be solved with neutron uansport methods. Two formulations of the neuual transport equation that are amenable to solution by existing multigroup neutron uansport codes are given -the multigroup formulation and the multispecies approximation. In the first, the solution provides the neuttal energy (as well as spatial and angular) disuibution, whereas in the latter, the specuum of each neutral species is assumed to be known and fixed. As an illustration, a problem of neutral penetration to and interaction with the plasma of the ST Tokamak is solved. The solution is obtained for a two-species model using the discrete ordinates code ANISN.

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