Fig. 6
Modelling results of the desorption rates (ML s−1) of methylamine on graphite (HOPG) surface. Red crosses: TPD data of CH3NH2 (m∕z = 31) on HOPG surface for different exposure doses of 0.25, 0.46, 0.71, and 1.0 ML are shown; blue lines: the best fits of the TPD curves of CH3NH2 from the HOPG surface, calculated with the best pre-exponential factor A = 1012 s−1 are represented.
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