Electron correlation angular

It is advantageous if the laser system pemiits rotation of the optical polarization. Detached electrons correlated witii different final electronic states of the neutral molecule will generally be emitted with different angular distributions about the direction of polarization. Measurement of the angular distribution helps in the interpretation of complex photoelectron spectra. The angular distribution/(0) of photoelectrons is [50]... 

Coulomb repulsion by occupying different r giom of space in the SCF picture Is 2s, both electrons reside in the same 2s region of space. In this particular example, the electrons undergo angular correlation to avoid one another. 

The second and third terms involve excited states that produce electron correlation (particularly of the angular sort) in the closed 2s shells of the atoms. Therefore, the wave function for the asymptotic geometry is essentially the product of two atomic wave functions. 

As mentioned previously, parameter a may be viewed as the effective nuclear charge felt by either one of the two electrons. Such an interaction is commonly called the screening effect. Furthermore, as described by this wavefunction, the two electrons move independently of each other, i.e., angular correlation is ignored. Electron correlation may be taken as the tendency of the electrons to avoid each other. For helium, angular correlation describes the two electrons inclination to be on opposite sides of the nucleus. On the other hand, radial correlation, or screening effect, is the tendency for one electron to be closer to the nucleus, while the other one is farther away. A one-parameter trial function that does take angular correlation into account is... 

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