Dispersion Coefficients for Alkali-Metal Dimers
Last update 05.12.1998
All numerical values are reported in a.u. (e=hbar=me=1).
The Cn coefficient has the dimension
Energy x Lengthn.
Due to the limitations of the HTML language in handling the Greek alphabet,
the diatomic electronic state symmetries are
denoted by uppercase Roman letters: S for
Sigma, P for Pi, and D for Delta.
For example, 1,3Sg,u should be read:
singlet Sigma gerade or triplet Sigma ungerade symmetries.
Typically, the numerical values are reported in the form
nn(mm)[ee] which should be read as nn plus or minus
mm times ten to the power ee. Both (mm) and
[ee] are optional.
n/a : not available
- : does not exist
This is a database featuring numerical and experimental values
for dispersion coefficients of alkali-metal dimers obtained over
the years. It is meant to provide a convenient reference for anyone
The database is organized in three hierarchical levels. For each
alkali-metal dimers there is a table containing
values for dispersion coefficients
for different asymptotes. For each asymptote and symmetry there is
a list of references and alternative results for the
dispersion coefficients. If you are aware about other published
results for the dispersion coefficients of
alkali-metal dimers which are not yet included in this database,
please send a short message to
Please also direct your comments to
the same address
. They are welcome.
Currently, this database is maintained by
Dr. Mircea Marinescu