期刊
JOURNAL OF CHEMICAL PHYSICS
卷 147, 期 1, 页码 -出版社
AIP Publishing
DOI: 10.1063/1.4981023
关键词
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资金
- European Research Council under the European Union's Seventh Framework Programme (ERC) [335646 MOLBIL]
- National Science Foundation [CHE-1634760]
- Radboud Excellence Initiative
We present state-to-state differential cross sections for collisions of NO molecules (X-2 Pi(1/2), j = 1/2, f) with He atoms and ortho-D-2 (j = 0) molecules as a function of collision energy. A high angular resolution obtained using the combination of Stark deceleration and velocity map imaging allows for the observation of diffraction oscillations in the angular scattering distributions. Differences in the differential cross sections and, in particular, differences in the angular spacing between individual diffraction peaks are observed. Since the masses of D-2 and He are almost equal and since D-2(j = 0) may be considered as a pseudo-atom, these differences directly reflect the larger size of D-2 as compared to He. The observations are in excellent agreement with the cross sections obtained from quantum close-coupling scattering calculations based on accurate ab initio NO-He and NO-D-2 potential energy surfaces. For the latter, we calculated a new NO-D-2 potential energy surface. Published by AIP Publishing.
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