Germanium at JYFL

Ion source: JYFL 14 GHz ECRIS

Method: JYFL miniature oven (operated at around 600 degrees C)

Materials: Isotopically enriched ⁷⁶Ge (fine metallic powder, color black/dark gray) in a tungsten (W) crucible.

Mixing gas: O₂ (He was also tried, but it provided very poor performance)

Microwave power: 190 W

Extraction voltage: 10 kV

Material consumption: 0.28 mg/h (averaged over the 1 week run)

*= Partial overlap with ¹⁶O³⁺.

Note: Carbon contamination in the charge state distribution above is from the previous run.