The Rydberg–Klein–Rees method is a procedure used in the analysis of
rotational-vibrational spectra of
diatomic molecule
Diatomic molecules () are molecules composed of only two atoms, of the same or different chemical elements. If a diatomic molecule consists of two atoms of the same element, such as hydrogen () or oxygen (), then it is said to be homonuclear mol ...
s to obtain a
potential energy
In physics, potential energy is the energy of an object or system due to the body's position relative to other objects, or the configuration of its particles. The energy is equal to the work done against any restoring forces, such as gravity ...
curve from the experimentally-known line positions.
References
Atomic physics
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