A crossed supersonic atomic beam apparatus is described allowing accurate measurements on the glory structure in the total cross section for elastic scattering of a noble gas atom by a noble gas atom over a rather wide energy range. The experimental cross sections are unavoidably convoluted...

This paper continues the authors' work on a new method for discussing one-dimensional systems in statistical mechanics with exponentially decreasing interactions. It is shown how in the case of the S-spin Ising and the N-state Potts model the results in the classic paper of Kac et al. for these...

A procedure is developed to obtain a joint probability distribution for a set of noncommuting observables. On one side this procedure is a generalization of methods of statistical thermodynamics, on the other one it is linked to Ludwig's generalization of the axiomatics of quantum mechanics. The...

Using field-theoretic methods we derive balance equations for a charged fluid in an external electromagnetic field the effects of which are included by minimal coupling. An infinite hierarchy of balance equations for tensor operators is derived. A macroscopic velocity field is introduced by a...

Using Kirkwood's variation method, simple approximate formulae for the multipole dispersion forces between closed shell atoms are derived. These expressions are tested in the case of the interaction of two hydrogen atoms and are used to calculate the dipole-dipole, dipole-quadrupole,...

The evolution of the one-particle distribution for a homogeneous system of hard spheres is studied. The terms in the formal density expansion of the collision operator which correspond to the class of hard sphere dynamical events involving one binary collision, the influence of other particles...

An experimental investigation has been made to determine the changes produced by ionization in the apparent viscosity of gases. The method used is that of the oscillating disk. In one series the gas was ionized by the gamma rays from an externally placed cesium-137 source. In the other two...

The transport properties - heat conduction, diffusion, thermal diffusion and viscous flow - of a neutrino-antineutrino mixture are studied. It turns out that in a temperature field the more abundant component will diffuse against the temperature gradient.