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More details can be found in this publication : " Status Report on Metallic Beam Production at GANIL/SPIRAL 2 ", 22th ECRIS (Busan 2016).
Spectrum obtained with ECR4M and optimized on 92Mo16+ (4.1 μA). RF power: 140 W (37 W reflected),
18 kV/1.8 mA, buffer gas O2: 8.5E-6 mbar at injection, 2E-7 mbar at extraction,
oven power 3.5 W (~250°C off line), oven position: 0 mm inside the plasma chamber, no
bias, coils: 940A/730A. Transport efficiency up to the faraday cup: ~40%.