Abstract
Measurements of the elastic constants from 4.2°K to 300°K have been made on single crystals of cesium bromide. The values of the elastic constants at 4.2°K are c11=3.350±0.8%, c12=1.025±10%, and c44=1.002±0.8% in units of 1011 dynes/cm2. The Debye temperature (θ0) at 0°K as calculated from the elastic constants is 149.0°K±2°K. The lattice energy at 0°K is computed to be U0=147.6 kcal/mole.