The seeded supersonic oven originally used to produce sodium clusters was incapable for lithium clusters that should be produced at higher temperatures. Ultimately, we designed a new compact stainless steel (SS) oven with thicker walls and constructed two molybdenum alloy (TZM) heaters for this new oven. The newly designed SS oven and heaters have been tested with liquid lithium, and the tested results demonstrated they can successfully work at ∼1000 °C, and a deposition layer of lithium was observed.

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