THE PRESSURE-DEPENDENCE OF THE STRUCTURE OF LIQUID BROMINE

The anisotropic intermolecular interaction has been known for many years to cause an anomalous feature at about 20 nm-1 in the static structure factor of liquid halogens. This feature increases sequentially for liquids fluorine to chlorine to bromine to iodine near their triple points, and we determined its shape as a function of pressure in liquid bromine at room temperature. While it apparently broadens with increasing pressure, after the underlying structure is removed a slight sharpening is found and discussed. Also at high pressure, we observe that the orientationally averaged structure of liquid bromine tends toward that of liquid chlorine at the same density.