☍ About the AlF spectroscopy database

     Aluminum monofluoride, AlF, has emerged as a highly promising candidate for experiments involving the laser cooling and trapping of cold molecules.

     This database is dedicated to the spectroscopic constants of AlF across various electronic states.

     The database has 15 electronic states:

          X\(^1\Sigma^+\), a\(^3\Pi\), A\(^1\Pi\), b\(^3\Sigma^+\), B\(^1\Sigma^+\), c\(^3\Sigma^+\), C\(^1\Sigma^+\), D\(^1\Delta\), d\(^3\Pi\), e\(^3\Delta\), E\(^1\Pi\), f\(^3\Sigma^+\), F\(^1\Pi\), G\(^1\Sigma^+\), H\(^1\Sigma^+\)

☍  The electronic states of AlF

  ⚬ Energy level scheme

     This figure presents the energy level scheme of AlF, highlighting the experimentally measured electronic states and the transitions between their vibrational ground states. The numbers indicate the Einstein A coefficients associated with each transition.

The energy scale is relative to the minimum of the electronic ground state X ¹Σ⁺ potential.

The electron affinity (EA) shown here is taken from the paper Photoelectron spectroscopy of metastable AlF⁻ negative ion, by Behera et al. (J. Chem. Phys. 163, 024322, 2025)..