EFFECT OF DYNAMICAL CORRELATIONS IN A SLOWLY PUMPED KNUDSEN GAS

In this paper we consider the effect of dynamical correlations on the absorption of energy by a gas of mutually noninteracting particles ins ide a container whose shape changes slowly (and periodically) with tim e. Tn principle, such correlations can significantly alter the rate at which energy is absorbed by the gas. We present the results of numeri cal simulations in which this effect is clearly seen, and study the de pendence of the effect on the rate at which the shape of the container oscillates.