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Introduction to Modeling High-resolution Spectra

  1. Colin M. Western

Published Online: 15 SEP 2011

DOI: 10.1002/9780470749593.hrs004

Handbook of High-resolution Spectroscopy

Handbook of High-resolution Spectroscopy

How to Cite

Western, C. M. 2011. Introduction to Modeling High-resolution Spectra. Handbook of High-resolution Spectroscopy. .

Author Information

  1. University of Bristol, School of Chemistry, Bristol, UK

Publication History

  1. Published Online: 15 SEP 2011


The basic ideas involved in the application of model Hamiltonians involving angular momentum operators to predict energy levels and transition intensities of various molecular systems are introduced. Such methods are essential for understanding many molecular systems, and are illustrated here with a few selected examples. These include two interacting nuclear spins, “forbidden” singlet–triplet transitions and the energy-level patterns associated with Hund's cases (a)–(c) in a diatomic molecule.


  • rotational spectroscopy;
  • angular momentum;
  • electronic spectroscopy;
  • operators;
  • electron and nuclear spin