Publikationsdatum:
2011-08-19
Beschreibung:
During the development of an atomic oxygen beam generator for laboratory simulation of the atmospheric conditions in low earth orbit, a new technique for performing electron stimulated desorption (ESD) in a continuous manner has been developed. In this technique, oxygen permeates through an Ag membrane at elevated temperature thereby providing a continuous supply of oxygen atoms to the 1000-A ZrO2 coating at the vacuum interface. ESD then results in a large peak of neutral O2 molecules which ultimately decay into steady-state desorption. The ESD signal is linear with respect to primary beam flux (0.035 O2 molecules per electron at a primary beam energy of 1 keV) but nonlinear with respect to primary beam energy.
Schlagwort(e):
INORGANIC AND PHYSICAL CHEMISTRY
Materialart:
Journal of Vacuum Science and Technology A (ISSN 0734-2101); 7; 2087-208
Format:
text
