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Fitting Fraunhofer Diffraction Data

  1. Apr 23, 2010 #1
    1. The problem statement, all variables and given/known data
    Is there a good way to do a fit. The fft looks simple:

    I am trying to fit data from my experiment to the very nonlinear nested sine function given as equation 3 here:
    http://www.physics.umd.edu/courses/Phys375/HillSpring10/Labs/Lab5Diffraction.pdf



    2. Relevant equations
    see above


    3. The attempt at a solution
    I am using matlab, the model function is crazy! Though the data looks good in fourier space.
     
  2. jcsd
  3. Apr 23, 2010 #2
    Try gnuplot, all in all it does a good fit.
    it is just few minutes to do it. If you need help supply your data with the model function, i can try.
    good luck
     
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