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T O P I C R E V I E W
storni	Posted - 02/10/2012 : 04:26:26 AM hi everyone! i study desorption from surfaces and I've been trying to fit the desorption curve with origin but im not sure where to start.. the desorption curve is given by arrhenius equation -dq/dt = - B dq/dT = A q^n exp(-E /RT), n = 0, 1 or 2 and my desorption curves (tpd) look like this: http://www.azonano.com/work/dGsX0HlSy259g2RTE3U9_files/image004.gif how can i start to fit any of these curves? any help would be greatly appreciated! ~storni
1 L A T E S T R E P L I E S (Newest First)
storni	Posted - 02/10/2012 : 06:00:06 AM I think actually I could try fitting these curves with a Maxwell Boltzmann distribution since they look a lot like: http://www.chemistry.wustl.edu/~edudev/LabTutorials/Airbags/images/maxwell.jpg In origin, I only find "Boltzmann" as a possibility of fit but I'm not sure how to initalize the parameters. quote: Originally posted by storni hi everyone! i study desorption from surfaces and I've been trying to fit the desorption curve with origin but im not sure where to start.. the desorption curve is given by arrhenius equation -dq/dt = - B dq/dT = A q^n exp(-E /RT), n = 0, 1 or 2 and my desorption curves (tpd) look like this: http://www.azonano.com/work/dGsX0HlSy259g2RTE3U9_files/image004.gif how can i start to fit any of these curves? any help would be greatly appreciated! ~storni

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