Selecting Incident Electron Pulse Parameters Forsurface Cleaning to Remove Adsorbates*

Removal of adsorbates from electrodes can be important for controlling workfunction, emission characteristics, reducing ion production and improving high power microwave sources. Exposing the surface to electron beams of energy (E), flux (F) and duration (D) can help blow off undesired adsorbates through heating. The threshold surface temperature
$(T_{s})$
for blow off will depend on the (E, F, D) ensemble. Coupled Monte Carlo and heat flow (MC-HF) analyses are used to map electron beam parameters required to attain the desired
$T_{s}$
threshold. Using Molecular Dynamics (MD) calculations yields the requisite
$T_{s}$
to begin blow off for a given adsorbate.