Physical Reference Data

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Energy Levels of Hydrogen and Deuterium

This page provides access to the theoretical information used in the numerical calculation of the energy levels and transition frequencies given by this database. Also provided is a link to a page that gives the output matrices of the 2002 CODATA least-squares adjustment. These matrices can be used obtain the data provided here. The energy level and transition frequency data may be accessed in a variety of forms as indicated by the links below.

Theoretical compilation and background:
                Ulrich D. Jentschura, Svetlana Kotochigova, Eric O. Le Bigot, Peter J. Mohr, and Barry N. Taylor
Database development and implementation:
                Svetlana Kotochigova and Peter J. Mohr

Fundamental Physical Constants
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