Ask HN: What can replace neon in semiconductor chip production?

In KrF and ArF excimer lasers, which are used in advanced semiconductor manufacturing processes, neon accounts for over 96% of laser gases used as the buffer gas.

Taken from Phillipkglass comment

With 90% of the supply coming from Ukraine what can be used to replace it in production. This seems to be a matter of national security that needs to be solved and quickly