Main constants of atomic spectra
Atomic spectra constants

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Main constants of atomic spectra


Atomic spectra constants

Author : Alain PETIT

Publication date: June 10, 1997 | Lire en français

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2. Main constants of atomic spectra

The main constants commonly used are listed here. These data are compiled by the National Bureau of Standards [24] a. Data are now available in computerized form [24] b ; this database includes :

  • electronic data: atomic mass, spectral term and ground-state configuration, ionization potentials for the neutral atom and the first 4 degrees of ionization for the ion;

  • nuclear data: atomic mass (Z + N ), isotopic abundance, nuclear spin, magnetic dipole moments and electrical quadrupoles (unfortunately, these databases are still incomplete).

2.1 Energy levels

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