About: Hund's cases

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In rotational-vibrational and electronic spectroscopy of diatomic molecules, Hund's coupling cases are idealized descriptions of rotational states in which specific terms in the molecular Hamiltonian and involving couplings between angular momenta are assumed to dominate over all other terms. There are five cases, proposed by Friedrich Hund in 1926-27 and traditionally denoted by the letters (a) through (e). Most diatomic molecules are somewhere between the idealized cases (a) and (b).

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  • Die Hundschen Kopplungsfälle beschreiben bei Elementarteilchen die verschiedenen Möglichkeiten der Kopplung von Bahn- und Spin-Drehimpulsvektoren (Spin-Bahn-Kopplung) innerhalb eines Moleküls. Sie wurden von dem Physiker Friedrich Hund aufgestellt und sind Teil der quantenmechanischen Beschreibung von Molekülen, bedeutend u. a. für die Molekülspektroskopie. Von den fünf Kopplungsfällen a) bis e) sind vor allem die Fälle a) und b) relevant. (de)
  • In rotational-vibrational and electronic spectroscopy of diatomic molecules, Hund's coupling cases are idealized descriptions of rotational states in which specific terms in the molecular Hamiltonian and involving couplings between angular momenta are assumed to dominate over all other terms. There are five cases, proposed by Friedrich Hund in 1926-27 and traditionally denoted by the letters (a) through (e). Most diatomic molecules are somewhere between the idealized cases (a) and (b). (en)
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  • Die Hundschen Kopplungsfälle beschreiben bei Elementarteilchen die verschiedenen Möglichkeiten der Kopplung von Bahn- und Spin-Drehimpulsvektoren (Spin-Bahn-Kopplung) innerhalb eines Moleküls. Sie wurden von dem Physiker Friedrich Hund aufgestellt und sind Teil der quantenmechanischen Beschreibung von Molekülen, bedeutend u. a. für die Molekülspektroskopie. Von den fünf Kopplungsfällen a) bis e) sind vor allem die Fälle a) und b) relevant. (de)
  • In rotational-vibrational and electronic spectroscopy of diatomic molecules, Hund's coupling cases are idealized descriptions of rotational states in which specific terms in the molecular Hamiltonian and involving couplings between angular momenta are assumed to dominate over all other terms. There are five cases, proposed by Friedrich Hund in 1926-27 and traditionally denoted by the letters (a) through (e). Most diatomic molecules are somewhere between the idealized cases (a) and (b). (en)
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  • Hundsche Kopplungsfälle (de)
  • Hund's cases (en)
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