Comparative study of forward and backward test-kinetic simulation approaches

摘要: In this paper we perform a comparative study of the forward and backward Liouville mapping applied to modeling ring-shaped non-gyrotropic velocity distribution functions particles injected in sheared electromagnetic field. The test-kinetic method is used compute function various areas proton cloud moving vicinity region with sharp transition magnetic field non-uniform electric approach computed for two-dimensional spatial bin, while averaged over bin same size as using trapezoidal integration scheme. It shown that two approaches lead similar results bins where varies smoothly. On other hand, covering regions configuration space characterized by gradients function, will generally provide different results.