Detection of a 14CO2 pulse.

Counts in 14C window

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Mass-13 negative ion current (ľA)

Enriched CO2 was flow injected into the Cs sputter ion source, carbon-13 was detected

by a Faraday cup after the low-energy magnet and carbon-14 was detected as positive

ions at the end of the entire AMS system with essentially no memory effect.

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