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Ion / Production method

106Cd21+ / Oven LCO HT

Compound used

106Cd CdO (enriched > 90%)

vapor pressure ~ 10-4 Torr at 550°C520°C

 

Aspect

Chemical sensitivity

Silver aspectPowder, stable ?

LCO HT - Ta Outlet diam. 2 mm

 

 

Ion source parameters

ECR4MECR4-14GHz

RF power : 380 139 W

Mixing gaz : O2

Oven power : 30.5 W (~250°C ~100°C off line)

Oven position : +6 mm

Source voltage : 18kV25kV/1.8mA0mA

Intensity : 43.5 7 µA (208Mo28106Cd21+)

For <I2821+> =1.4 µA during 17 11 days :

Consumption : 0.1 034 mg/h

Total ionization efficiency :  13%10%

CommentsLow ionization efficiency

More details can be found in this publication : " Status Report on Metallic Beam Production at GANIL/SPIRAL 2 ", 22th ECRIS (Busan 2016).

 Image Added

Spectrum obtained with ECR4M ECR4 and optimized on 208Pb 28106Cd21+ (43.5 7 μA). RF power: 380 139 W (120 W 17W reflected), 18 25 kV/1.8 0 mA, buffer gas O2: 8.5E6E-6 mbar at injection, 2E-7 mbar at extraction, oven power 10.9 5 W (~200°C ~100°C off line), oven position: +6 mm inside the plasma chamber, no bias, coils: 940A1071A/730A1044A. Transport efficiency up to the faraday cup: ~40%~50%.