An accurate non-Born-Oppenheimer calculation of the first purely vibrational transition in LiH molecule

Sergiy Bubin, Ludwik Adamowicz, Marcin Molski

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Abstract

In this work we study the ground and the first vibrationally excited states of LiH molecule. We performed an extensive nonrelativistic variational calculations of the two states without using the Born-Oppenheimer approximation. The results are analyzed and compared with the data extracted from recent experiments. The 0←1 transition energy obtained in the calculations converged to a value which is less than a wave number above the transition energy estimated from the available experimental data concerning the LiH rovibrational transitions. We discuss the remaining discrepancy and the procedure used to determine the "experimental" transition frequencies.

Original languageEnglish
Article number134310
JournalJournal of Chemical Physics
Volume123
Issue number13
DOIs
Publication statusPublished - Oct 3 2005

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ASJC Scopus subject areas

  • Physics and Astronomy(all)
  • Physical and Theoretical Chemistry

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