The (2+1) REMPI spectroscopy of jet-cooled Br-2

RJ Donovan, AC Flexen, KP Lawley*, T Ridley

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

Abstract

The (2 + 1) REMPI spectrum of Br-2 in the 56 000-85 000 cm(-1) region is re-examined using jet cooling and mass resolved ion detection. Apart from the lowest three gerade Rydberg states, which on energetic grounds must be members of the 5s cluster, all higher states are reassigned to two Omega components of the nd-series, with n ranging from 4 to 12. Omega values are deduced from rotational contour analysis and intensity ratios under linear and circular polarization. The simplicity of the observed spectra in the midst of a dense manifold of Rydberg states is discussed in terms of the Omega(c)(lambda m(s))(Ry) coupling a scheme and it is proposed that only those states with a large singlet component are seen. The effect of different virtual paths in accessing the a and d-series is evident in the rotational line contours of the 0

Original languageEnglish
Pages (from-to)217-228
Number of pages12
JournalChemical physics
Volume226
Issue number1-2
Publication statusPublished - 1 Jan 1998

Keywords

  • MULTIPHOTON IONIZATION SPECTROSCOPY
  • RYDBERG
  • SPECTRUM
  • MOLECULE
  • STATES
  • I-2
  • BR2

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