Abstract
The design of an experimental setup to determine helium solubility in liquid metals, such as the eutectic Pb-16Li alloy is presented. The apparatus design is based on the concept of saturation–desorption. The lead–lithium alloy is saturated by helium through its surface as well as by bubbling the helium directly into the liquid, which also aids the liquid mixing. Once the helium saturated solution is obtained, part of the liquid is transferred into a second vessel where the dissolved helium is desorbed into a deep vacuum. The transferred portion of the liquid is weighed, and the amount of helium in the gas phase is determined from the total pressure increase as well as by residual gas analysis via a quadrupole mass spectrometer.
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