Experimental study of density and thermal expansion of the advanced materials and heat transfer agents for liquid metal systems of thermonuclear reactor: Lithium

Using the gamma-ray attenuation technique, the density of the condensed state of lithium is measured within the range from room temperature up to ∼700 K. The purity of the investigated lithium is as high as 99.95 mass %. The confidence error of experiments is within 0.3%. From the experimental results, the volume thermal expansion coefficient of lithium is calculated within a wide temperature interval. The experimental data obtained on thermal properties of the solid and liquid state of lithium are compared to those available in the literature.