Atomic and Molecular Physics

  1. Fine Structure and Relativistic Effects
    1. Limitations of the Non-Relativistic Model
      1. Need for Relativistic Corrections
        1. Order of Magnitude Estimates
        2. Fine Structure Corrections
          1. Relativistic Kinetic Energy Correction
            1. Spin-Orbit Coupling
              1. Physical Origin
                1. Coupling Strength
                  1. Energy Level Splitting
                    1. The Darwin Term
                      1. Contact Interaction
                        1. Physical Interpretation
                          1. Fine Structure Constant
                            1. Total Fine Structure Energy Shift
                              1. j-j Coupling Scheme
                              2. The Dirac Equation
                                1. Relativistic Wave Equation
                                  1. Dirac Matrices
                                    1. Spinor Solutions
                                      1. Hydrogen Atom Solutions
                                      2. Quantum Electrodynamics Corrections
                                        1. The Lamb Shift
                                          1. Vacuum Polarization
                                            1. Vertex Corrections
                                              1. Experimental Verification
                                              2. Hyperfine Structure
                                                1. Nuclear Magnetic Moment
                                                  1. Hyperfine Interaction Hamiltonian
                                                    1. Magnetic Dipole Interaction
                                                      1. Contact Interaction (Fermi Contact)
                                                        1. Hyperfine Energy Splitting
                                                          1. Total Angular Momentum F
                                                            1. The 21 cm Line of Hydrogen
                                                              1. Ground State Hyperfine Transition
                                                                1. Astrophysical Importance

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                                                              3. The Hydrogen Atom

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                                                              5. Atoms in External Fields