Near-threshold inelastic collisions using molecular beams with a tunable velocity

Joop J. Gilijamse, Steven Hoekstra, Sebastiaan Y. T. van de Meerakker*, Gerrit C. Groenenboom, Gerard Meijer

*Corresponding author for this work

Research output: Contribution to journalArticleAcademicpeer-review

198 Citations (Scopus)

Abstract

Molecular scattering behavior has generally proven difficult to study at low collision energies. We formed a molecular beam of OH radicals with a narrow velocity distribution and a tunable absolute velocity by passing the beam through a Stark decelerator. The transition probabilities for inelastic scattering of the OH radicals with Xe atoms were measured as a function of the collision energy in the range of 50 to 400 wavenumbers, with an overall energy resolution of about 13 wavenumbers. The behavior of the cross-sections for inelastic scattering near the energetic thresholds was accurately measured, and excellent agreement was obtained with cross-sections derived from coupled-channel calculations on ab initio computed potential energy surfaces.

Original languageEnglish
Pages (from-to)1617-1620
Number of pages4
JournalScience
Volume313
Issue number5793
DOIs
Publication statusPublished - 15-Sep-2006

Keywords

  • POTENTIAL-ENERGY SURFACES
  • INTEGRAL CROSS-SECTIONS
  • OH(X (2)PI)+AR
  • STATE
  • SCATTERING
  • TEMPERATURES
  • AR
  • CO

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