| Abstract: | A variant of the direct statistical modeling method is proposed as a means of calculating the diffusion velocity in a dense buffer gas; it is then used to investigate the accuracy of the strong collision model for the atomic diffusion regimes most frequently encountered in experiments; the accuracy of the approximation, which uses a constant collision frequency, is investigated by comparing the diffusion velocities obtained for different particle interaction potentials.Translated from Izvestiya Akademii Nauk SSSR, Mekhanika Zhidkosti i Gaza, No. 5, pp. 149–155, September–October, 1990.The author wishes to thank M. N. Kogan for his interest in the work and useful discussions, A. A. Abramov and M. S. Ivanov for advice on the calculation method, and S. V. Ivanov for useful discussions. |
