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Fit data NMR

  1. Dec 10, 2012 #1
    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 spin-lattice 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=0BwZLQ_me50B8VExfYU1GX2dyV3M
     
  2. jcsd
  3. Dec 10, 2012 #2

    mfb

    User Avatar
    2016 Award

    Staff: Mentor

    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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