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A question on momenta of electrons

  1. Dec 13, 2005 #1
    Is there any special significance of the fact that [tex] \vec{L} [/tex] and [tex] \vec{S} [/tex] of an electron are in-phase or out-of-phase at all times?????

    i.e. is there any special physical significance of the fact that

    (i) [tex] | \vec{J} | = | \vec{L} | + | \vec{S} | [/tex]
    (ii) [tex] | \vec{J} | = | \vec{L} | - | \vec{S} | [/tex]
    I am refering to magnitudes above!
    Also, is there any significance of the fact that [tex] \vec{L} [/tex] and [tex] \vec{S} [/tex] are NOT in phase at any time?????
    We are obviously assuming simple electronic configurations! :tongue: :biggrin:
     
  2. jcsd
  3. Dec 13, 2005 #2

    Physics Monkey

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    The total angular momentum is always [tex] \vec{J} = \vec{L} + \vec{S} [/tex], the rule you refer to has to do with the allowed values of the [tex] J^2 [/tex] quantum number.
     
  4. Dec 13, 2005 #3
    Can you please explain a bit more!!!
     
  5. Dec 13, 2005 #4

    Physics Monkey

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