When lunar rock is heated to 600 °C to extract Helium-3, are gases expelled other than helium? Inductance process would be used in heating the rock.
Lunar regolith may contain not only the lightest noble gas helium, but also hydrogen and other noble gases like neon, argon, krypton and xenon. The concentration of helium is much higher than that of the other noble gases.
More than 99 % of lunar soil are oxides of silicon and some metals like iron and aluminum, see table 7.15 on page 62 of the Pdf.