Adsorption-desorption cosine distribution

Fig. 7b. Anguiar dependence of adsorption S and desorption D probabiiity of H2 from a Ni(lll) surface. Equal probabilities are expected on the basis of detailed balancing. Non-cosine distributions for H2 indicate an activation barrier of adsorption. Gas temperature is 300 K, surface temperature 190 K [85Ste].

Figure 4.3 The Motion of Gas Molecules Through a Pipe (a) with no Absorption-Desorption and (b) with Adsorption-Desorption. Note that when a Species is Desorbed it Leaves the Surface with a Cosine Distribution...

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