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Homework Help: Sign of g-factor value

  1. Mar 31, 2007 #1
    1. The problem statement, all variables and given/known data
    1)I have a doubt regarding the sign of g factor value.
    In Wikipedia the g-factors are given as:
    Orbital g-factor
    Mu(L) = g(L)[Mu(B)L]/h_bar
    Where g(L)=-1 is the orbital g factor
    Spin g-factor
    Mu(S) = g(S)[Mu(B)S]/h_bar
    Where g(S)=-2 is the spin g factor
    Lande g-factor
    Mu(J) = g(J)[Mu(B)J]/h_bar
    Where g(J) is the spin g factor

    But in my book it is given as follows:
    Orbital g-factor
    Mu(L) = -g(L)[Mu(B)L]/h_bar
    Where g(L)=1 is the orbital g factor
    Spin g-factor
    Mu(S) = -g(S)[Mu(B)S]/h_bar
    Where g(S)=2 is the spin g factor
    Lande g-factor
    Mu(J) = g(J)[Mu(B)J]/h_bar
    Where g(J) is the spin g factor

    Which is correct? Is the g factor positive or negative? Also, in Wikipedia it is given that the g-factor value for electrons, neutrons and muon is negative while it is positive for protons. I think they mean spin g-factor here.



    2. Relevant equations



    3. The attempt at a solution
     
  2. jcsd
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