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- Rydberg_atom abstract "A Rydberg atom is an excited atom with one or more electrons that have a very high principal quantum number. These atoms have a number of peculiar properties including an exaggerated response to electric and magnetic fields, long decay periods and electron wavefunctions that approximate, under some conditions, classical orbits of electrons about the nuclei. The core electrons shield the outer electron from the electric field of the nucleus such that, from a distance, the electric potential looks identical to that experienced by the electron in a hydrogen atom.In spite of its shortcomings, the Bohr model of the atom is useful in explaining these properties. Classically an electron in a circular orbit of radius r, about a hydrogen nucleus of charge +e, obeys Newton's second law:where k = 1/(4πε0).Orbital momentum is quantized in units of ħ:.Combining these two equations leads to Bohr's expression for the orbital radius in terms of the principal quantum number, n:It is now apparent why Rydberg atoms have such peculiar properties: the radius of the orbit scales as n2 (the n = 137 state of hydrogen has an atomic radius ~1 µm) and the geometric cross-section as n4. Thus Rydberg atoms are extremely large with loosely bound valence electrons, easily perturbed or ionized by collisions or external fields.Because the binding energy of a Rydberg electron is proportional to 1/r and hence falls off like 1/n2, the energy level spacing falls off like 1/n3 leading to ever more closely spaced levels converging on the first ionization energy. These closely spaced Rydberg states form what is commonly referred to as the Rydberg series. Figure 1 shows some of the energy levels of the lowest three values of orbital angular momentum in lithium.".
- Rydberg_atom thumbnail Lithium_levels.png?width=300.
- Rydberg_atom wikiPageID "1498040".
- Rydberg_atom wikiPageRevisionID "593450927".
- Rydberg_atom alt "Stark-map for hydrogen".
- Rydberg_atom alt "Stark-map for lithium".
- Rydberg_atom caption "Figure 4. Computed energy level spectra of hydrogen in an electric field near n=15. The potential energy found in the electronic Hamiltonian for hydrogen is the 1/r Coulomb potential which does not couple the different Stark states. Consequently the energy levels from adjacent n-manifolds cross at the Inglis-Teller limit.".
- Rydberg_atom caption "Figure 5. Computed energy level spectra of lithium in an electric field near n=15. The presence of an ion-core that can be polarized and penetrated by the Rydberg electron adds additional terms to the electronic Hamiltonian leading to coupling of the different Stark states and hence avoided crossings of the energy levels.".
- Rydberg_atom hasPhotoCollection Rydberg_atom.
- Rydberg_atom image "hfspec1.jpg".
- Rydberg_atom image "lfspec1.jpg".
- Rydberg_atom width "200".
- Rydberg_atom subject Category:Atoms.
- Rydberg_atom type Abstraction100002137.
- Rydberg_atom type Atom114619225.
- Rydberg_atom type Atoms.
- Rydberg_atom type Matter100020827.
- Rydberg_atom type Part113809207.
- Rydberg_atom type PhysicalEntity100001930.
- Rydberg_atom type Relation100031921.
- Rydberg_atom type Substance100019613.
- Rydberg_atom comment "A Rydberg atom is an excited atom with one or more electrons that have a very high principal quantum number. These atoms have a number of peculiar properties including an exaggerated response to electric and magnetic fields, long decay periods and electron wavefunctions that approximate, under some conditions, classical orbits of electrons about the nuclei.".
- Rydberg_atom label "Atome de Rydberg".
- Rydberg_atom label "Atomo di Rydberg".
- Rydberg_atom label "Atomy rydbergowskie".
- Rydberg_atom label "Rydberg atom".
- Rydberg_atom label "Rydberg-Zustand".
- Rydberg_atom label "Ридберговские атомы".
- Rydberg_atom label "里德伯原子".
- Rydberg_atom sameAs Rydberg-Zustand.
- Rydberg_atom sameAs Atome_de_Rydberg.
- Rydberg_atom sameAs Atomo_di_Rydberg.
- Rydberg_atom sameAs Atomy_rydbergowskie.
- Rydberg_atom sameAs m.0561z7.
- Rydberg_atom sameAs Q2178236.
- Rydberg_atom sameAs Q2178236.
- Rydberg_atom sameAs Rydberg_atom.
- Rydberg_atom wasDerivedFrom Rydberg_atom?oldid=593450927.
- Rydberg_atom depiction Lithium_levels.png.
- Rydberg_atom isPrimaryTopicOf Rydberg_atom.