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Thread: Spectro Definition Question

  1. #1 Spectro Definition Question 
    New Member Pierrotechnique's Avatar
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    Oct 2011
    Hey guys, just wondering what the term "population" means when used in spectroscopy, like for example in the phrase "the populations of the initial levels" of a sample undergoing rotational spectro. Just trying to figure this one paragraph out...



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  3. #2  
    Forum Ph.D.
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    Jan 2009
    the relative number of atoms in a given exicitation state

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  4. #3  
    New Member Pierrotechnique's Avatar
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    Oct 2011
    Alright, thanks. So the population of an initial level is how many species (whatever we're talking about, atoms in a molecule or electrons in an atom) are in that excitation state. Makes sense.
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