Abstract
The pseudo alloy atom model was applied to the Cs-K alloy system. Total binding energies, bulk moduli and heats of solution were calculated as a function of alloy compositions over the full composition range from pure Cs to pure K. The calculated values of total binding energies showed a good agreement with experiments. The results suggest that the pseudo alloy atom model is suitable for the description of disordered alloys. It was concluded that the potential of an ion in alloys is appreciably different from that in the pure metal case.