Computational Particle Transport

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Many models of different physical phenomena as a part include particle transport process. Reactor modeling, controlled fission, astrophysical, and climate problems require solving of linear transport equation. Furthermore, interaction between transport involved particles and medium changes its characteristics and vice versa. So, transport equation should be coupled with equations characterizing medium and containing connection between transport process and medium state. For example, high-temperature radiative transport process is major mechanism of heat transfer between different parts of medium. Interaction between radiation and medium is essentially non-linear and non-local, due to medium temperature determination of radiation absorption and irruption and vice versa radiation absorption and irruption exerts on medium temperature. For the same particle energies sufficient variations of medium temperature or density leads to the great vary in its absorption and scattering properties. Noting those properties resonance structure does give us insight on the complexity of radiation-medium interaction modeling and neutron physics problems. So, in most cases one should not only be able to solve transport equation, but to manage its interaction with other equations characterizing other parts of physical system model.