CO2 exposure on GEM copper surfaces drives mild redox reactions forming thin Cu2O and oxygenated films that limit charge accumulation and support long-term detector stability.
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Surface mechanisms governing long-term stability of GEM detectors in CO$_2$-based gaseous mixtures
CO2 exposure on GEM copper surfaces drives mild redox reactions forming thin Cu2O and oxygenated films that limit charge accumulation and support long-term detector stability.