Rotationally inelastic scattering of ND3 with H2 as a probe of the intermolecular potential energy surface

Ondřej Tkáč, Ashim K. Saha, Jérôme Loreau, Qianli Ma, Paul J. Dagdigian, David Parker, Ad Van Der Avoird*, Andrew J Orr-Ewing

*Corresponding author for this work

Research output: Contribution to journalArticle (Academic Journal)peer-review

15 Citations (Scopus)
302 Downloads (Pure)

Abstract

Differential cross sections (DCSs) are reported for rotationally inelastic scattering of ND3 with H2, measured using a crossed molecular beam apparatus with velocity map imaging (VMI). ND3 molecules were quantum-state selected in the ground electronic and vibrational levels and, optionally, in the j±k = 14- rotation-inversion level prior to collisions. Inelastic scattering of state-selected ND3 with H2 was measured at the mean collision energy of 580 cm-1 by resonance-enhanced multiphoton ionisation spectroscopy and VMI of ND3 in selected single final j'±k' levels. Comparison of experimental DCSs with close-coupling quantum-mechanical scattering calculations serves as a test of a recently reported ab initio potential energy surface. Calculated integral cross sections reveal the propensities for scattering into various final j'±k' levels of ND3 and differences between scattering by ortho and para H2. Integral and differential cross sections are also computed at a mean collision energy of 430 cm-1 and compared to our recent results for inelastic scattering of state-selected ND3 with He.

Original languageEnglish
Pages (from-to)3925-3933
Number of pages9
JournalMolecular Physics
Volume113
Issue number24
Early online date13 Jul 2015
DOIs
Publication statusPublished - 17 Dec 2015

Bibliographical note

Date of Acceptance: 15/05/2015

Keywords

  • crossed-beam scattering
  • differential cross sections
  • molecular collisions
  • ND-H
  • velocity map imaging

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