Wavelength of sodium light

  • Thread starter kmp
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  • #1
kmp
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why sodium has two lines D1 and D2 ?
 

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  • #3
kmp
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it may be due to transition between s1/2 and p3/2, p1/2 and p3/2 states
 
  • #4
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Those are transitions from two fine levels.
That's [tex]^2P_{1/2} \to ^2S[/tex] and [tex]^2P_{3/2} \to ^2S[/tex] :smile:
 
  • #5
Redbelly98
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In addition to ZapperZ's link, there is

http://hyperphysics.phy-astr.gsu.edu/hbase/quantum/sodzee.html#c1

which has this image:

Nadoub.gif
 

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