I'm trying to get the spectral analysis data of the periodic table of elements in the time domain format or find a site that has the data in the time domain format. All the sites I know have the data in the frequency domain which is great but I need to do my own fft analysis starting from the time domain because the frequency domain does not include the phase angle data, which I also need to use for my calculations/animations.

Does anyone know where I can get this data or can someone send me the spectral analysis data for sodium and potassium in the time domain?


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    $\begingroup$ What do you need the time domain for? Depending on what you need them for, you could just take the frequency domain data and do an inverse fourier transform. $\endgroup$
    – Dan
    Aug 23, 2012 at 22:37
  • $\begingroup$ @Dan That won't work since the phase angle information is not included when you use the frequency domain, that is the reason I need to start from the time domain $\endgroup$
    – Rick T
    Aug 24, 2012 at 1:18
  • $\begingroup$ What do you need this for? Why do you need the phase angle? $\endgroup$
    – Dan
    Aug 24, 2012 at 23:27
  • $\begingroup$ @Dan sorry if the question wasn't clear but I need to run my own fft analysis starting from the time domain not the frequency domain because I also need the phase angle data to use in my calculations/animations. I'll update the question. If this is the wrong forum to ask this question can someone tell me the correct one. $\endgroup$
    – Rick T
    Aug 25, 2012 at 5:57
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    $\begingroup$ Also, what frequency range do you want the data in? If it's IR or higher, said tables probably don't exist. It's hard to get phase information at those frequencies, and the measurements are made directly in the frequency domain. $\endgroup$
    – Dan
    Aug 26, 2012 at 0:58


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