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Results tagged with atomic-physics
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user 27415
Atomic physics is the field of physics that studies atoms as an isolated system of electrons and an atomic nucleus. It is primarily concerned with the arrangement of electrons around the nucleus and the processes by which these arrangements change. This includes ions as well as neutral atoms and, unless otherwise stated, for the purposes of this discussion it should be assumed that the term atom includes ions.
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Why does Hartree-Fock work so well?
Why does the Hartree-Fock method for electronic structure work so well for atoms?
More specifically, why is the "correlation energy" a relatively small component of an atom's (ground state) energy?
I …
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Is the oxygen molecule $O_2$ fermion or boson?
The rule is simple:
A combination of particles is a fermion is it contains an odd number of fermions otherwise it is boson.
Since $\text{O}_2$ is two of the same particle (assuming both are the sam …
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symmetry group of multi-electron atom
Neglecting spin effects, the energy levels of multi-electron atoms are characterized by states of definite total orbital ($L^2$) and spin angular momentum ($S^2$).
From this it seems that the symmetr …
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Is it possible to find the hydrogen atom's radial wavefunctions?
An electron with total orbital angular momentum of $L^2 = \hbar^2 l(l+1)$ will experience a centrifugal force in addition to the Coulomb force from the nucleus. The result is that, in the frame rotati …
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Quantum mechanics scattering theory
An excited atom in vacuum is being gently tugged by the electromagnetic field back into its ground state. This occurs even when the electromagnetic field is in its quantum mechanical ground state.
Sh …
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