Measurement of the vapour pressure of Bismuth by a radioactive tracer technique

Abstract

A radioactive tracer technique has been used to increase the sensitivity of the Knudsen method of vapour pressure determination. The vapour pressure of liquid bismuth in the temperature range 400 to 500 °C has been measured and is given by the equation                     Log₁₀ Pmm = 9.390 ? 10500/T .