Long mean free path kinetic theory using scattering rates

Summary form only given, as follows. Numerical computation of the scattering rates of particles can provide information equivalent to the full distribution function, but can be much less computationally expensive to obtain. The calculation involves iterating a (discretized) integral equation. The difficulty lies in finding an accurate, realistic and sufficiently compact form for the ´kernel´ in the integral equation. Different representations of the kernel will be discussed. Applications have been made to long-mean-free path plasma chemistry, transport of sputtered particles and kinetics of injected ions inside a crystal. These will be outlined with emphasis on neutral transport in a plasma environment.