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²⁰⁸Pb²⁸⁺ / Oven LCO

²⁰⁸Pb (enriched > 90%)

vapor pressure ~ 10^-4 Torr at 550°C

Silver aspect, stable

Image Modified

LCO - Ta Outlet diam. 2 mm

ECR4M-14GHz

RF power : 380 W

Mixing gaz : O₂

Oven power : 3.5 W (~250°C off line)

Oven position : +6 mm

Source voltage : 18kV/1.8mA

Intensity : 4.5 µA (²⁰⁸Mo²⁸⁺)

For <I₂₈₊> =1.4 µA during 17 days :

Consumption : 0.1 mg/h

Total ionization efficiency :  13%

Becomes liquid before evaporation. The plasma must be established very slowly

to avoid over-evaporation. The ionization efficiency is good.