Electron stimulated desorption from aluminium alloy and aluminium coated stainless steel

The electron stimulated desorption (ESD) yield was measured at the internal surface of tubular samples made of aluminium alloy and aluminium coated stainless steel. The ESD yields were measured as a function of electron accumulated dose to a maximum of 3 × 1022 e−/m2 at electron energy of 500 eV, then as a function of electron energy between 40 eV and 5 keV. The ESD yields as a function of electron energy were linear for all gasses except CH4 and CO2.

► Electron stimulated desorption yields were measured.
► Bulk Al and Al coated stainless steel tubular samples after a 220 °C 24-h bakeout.
► For a specified pumping time (24 h or 26 fays) after bakeout before bombardment.
► As a function of electron dose up to 3 × 1022 e−/m2 at electron energy of 500 eV.
► As a function of electron energy in the range 40 eV to 5 keV.