... Analytical estimations of parameters of monoatomic gas free jet expanding into vacuum . Abstract The Boltzmann equation for spherical free jet expansions of monoatomic gases atoms of which interact with the Lennard—Jones potential was solved by the method of moments using the ellipsoidal distribution function. ... Moscow University Chemistry Bulletin . 2003, Vol. ... 4, P. 238 . Copyright (C) Chemistry Dept., ... Copyright (C) Chemisty Department of Moscow State University . ...