Torsion Effusion Study of the Vapor Pressure and Heat of Sublimation of Gallium

Abstract

The vapor pressure of gallium was measured by the torsion effusion method between 1174° and 1603°K. The pressure, in atmospheres, is given by the expression: in that temperature range. The heat of sublimation of gallium is calculated by the third‐law method to be 65.4 kcal. A second‐law determination is in reasonable agreement.