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Fit data NMRby PhysicsGente
Tags: data 
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#1
Dec1012, 03:32 AM

P: 86

Hello, I didn't know where else to post this so here it goes ...
I have collected data from a pulsed NMR experiment to calculate the value of the spinlattice relaxation time (T1). Now I'm asked to fit the data using a function of the form V(t) = V_0*(1  2*exp(t/T1)). But I'm not really sure how to fit it. Is there any software out there I can use to fit this data with that function? I was trying to fit it using ROOT but I did not succeed ;(. The data is here, https://docs.google.com/open?id=0BwZ...ExfYU1GX2dyV3M 


#2
Dec1012, 09:47 AM

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P: 11,831

ROOT can fit that, but you should restrict the fitting range to t>=50 or use a different fit function (##V(t)## looks like a good idea), otherwise the result is meaningless. Even there, I doubt that the function gives a good approximation to the measured values.



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