The closure of the BBGKY hierarchy to obtain the Boltzmann equation requires, in particular, restricting particle interactions to include only isolated binary collisions. Boercker and Dufty accomplish this by approximating the three-particle reduced density operator in a particular manner that...

The initial density correction to gaseous viscosity using accurate realistic potentials of the noble gases is evaluated using the Rainwater–Friend theory. It is shown that this theory works satisfactorily for densities up to about 2moldm−3. Due to the superimposability of the noble gas...