How to measure an emission spectrum?

  1. Say I have a spectrophotometer that has a grating monochromator. If I want to measure emission instead of absorption from a lamp, could I just remove the exit slit? By removing the exit slit, doesn't all of the light just hit the sample?
     
  2. jcsd
  3. GCT

    GCT 1,769
    Science Advisor
    Homework Helper

    what kind of detector are you using? If you're using a lamp (continuum or for instance sodium lamp) and you're just measuring the atomic emission spectra than you could probably use a single channel detector to scan the wavelengths without removing the exit slit. If you're using a multichannel detector, for instance a charge couple detector, than you'll need to open up the exit slit.
     
  4. Awesome, thanks!
     
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