Application of the Fokker-Planck Kolmogorov equation to determining the mean value of nucleons generated by the direct ejection process

Abstract

The statistical description of the process of direct nucleon ejection is the subject of this paper. This description is based on the generalized Fokker-Planck-Kolmogorov equation. The basic proposal is this: deterministic equations and their solutions have the mean values of the stochastic model of the ablation problem. The problem of deformation of the phase transition front is considered. The study is carried out by using the introduced stability position for the dispersion of solutions for mean values. The result of the study is the conclusion that the influence of the Markov diffusion coefficient leads to distortion of the original shape of the boundary phase transition front. The effect of the initial aspiration to resist changing the shape of the phase transition front was found. [Projects of the Serbian Ministry of Education, Science and Technological Development, Grant no. 174005 and Grant no. 174024]

Keywords

• Stefan problem
• ejection problem
• Fokker-Planck-Kolmogorov equation
• differential equation
• phase transition front