Another use for lithium2 May 2019 22:19
Taken from The Economist article on fusion power.
"Fortunately, there is a short cut. This is to employ hydrogen atoms pre-loaded with neutrons—either one (deuterium) or two (tritium). One in every 6,000 hydrogen atoms on Earth is actually deuterium, meaning the substance can be extracted from water. Tritium, which is radioactive, is much rarer and has to be synthesised. But the process is easy and the raw material, lithium, abundant."