Integral order desorption with coverage-independent parameters

2 Integral order desorption with coverage-independent parameters 

Once again, in the simplest cases, v and Ed are assumed to be constant over the whole coverage and temperature regime. For a number of states, eqn. (72) can be written in a summed form, for i desorption states, as 

The aim in the early 1960s was to produce a method of treating desorption 

This is the simplest and probably the least accurate method of determining the kinetic parameters involved in thermal desorption processes. To minimise inaccuracies, the desorption peak should be measured using a linear heating ramp given by 

The terms having been defined earlier. If re-adsorption during desorption is negligible, then 

---