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Spin operator

  1. Nov 6, 2012 #1
    I should Use
    the fact that in general the eigenvalues of the square of the angular momentum
    operator is J(J + 1)h and show the spin of the electron.

    I have J= L+S and J2 = L2+ S2
    1. The problem statement, all variables and given/known data


    But how could i find the spin of the electron
     
  2. jcsd
  3. Nov 6, 2012 #2

    dextercioby

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    Not really, J^2 = L^2 + S^2 +2 L.S. And post the whole text of your problem.
     
  4. Nov 6, 2012 #3

    Yes, i was sloppy. I meant that. But, I am asked to show the spin of the electron, by knowing that the eigenvalue of J2 is usually J(J+1)hbar...what do they mean?

    sthg like solving for S in J^2 = L^2 + S^2 +2 L.S?
     
  5. Nov 6, 2012 #4
    So how to do this
     
  6. Nov 6, 2012 #5

    dextercioby

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    Can you, please, post the text of your problem, exactly as it appears in your book ?
     
  7. Nov 6, 2012 #6
    Calculate the square of the total spin operator and find all its eigenvalues. Use
    the fact that in general the eigenvalues of the square of the angular momentum
    operator is J(J + 1)¯h
    2
    to find the spin of the electron.



    the firts one i have fixed..
     
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