Fig. 1
Quadrupole mass spectrometer temperature-programmed desorption curve (m/z 30) of a pure H2CO multilayer sample heated at a 4 K/min temperature ramp rate. The desorption rate has been normalised to a one monolayer coverage (1015 molec cm-2). The dashed line is the result of fitting the experimental data with a zeroth-order Polanyi-Wigner equation (Eq. (1)).
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