Abstract
A novel method has been employed to measure the solubility of argon and helium in liquid sodium as a function of gas partial pressure, temperature, and purity of the sodium. The values obtained can be correlated well with the experimental results available for the few other liquid metal-noble gas systems investigated. Theoretical calculations with an improved hard-sphere model also confirm the experimental results derived here. This allows a prediction also of the solubility of xenon in sodium. Some safety problems closely connected with the solubility of noble gases in the reactor coolant sodium are dealt with by the example of the German 300 MWe liquid metal fast breeder reactor (SNR).
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