Ro-vibrational energies of caesium molecules with the Tietz-Hua oscillator

Ridha Horchani*, Noor Al-Kindi, Haikel Jelassi

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

14 Citations (Scopus)


Ro-vibrational energies of caesium molecules in the excited electronic state 33g+ have been calculated by solving the Schrödinger equation for Tietz-Hua potential by applying a Pekeris-type approximation to the centrifugal term. The obtained results are compared with those obtained via improved Manning-Rosen potential and with the experimental Rydberg–Klein–Rees (RKR) data. It has been demonstrated that the Tietz-Hua potential is one of the best potential energy functions in fitting experimental RKR data for Cs2 (33g+) molecule. The ro-vibrational energy levels, calculated by using Tietz-Hua potential, are in excellent agreement with the experimental data with an average deviation less than 0.001% in the most worst cases.

Original languageEnglish
Article numbere1812746
JournalMolecular Physics
Issue number4
Publication statusPublished - 2021


  • Ro-vibrational energies
  • Tietz-Hua potential
  • caesium molecules

ASJC Scopus subject areas

  • Biophysics
  • Molecular Biology
  • Condensed Matter Physics
  • Physical and Theoretical Chemistry

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