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首页> 外文期刊>The Journal of Chemical Physics >Imaging diffraction oscillations for inelastic collisions of NO radicals with He and D-2
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Imaging diffraction oscillations for inelastic collisions of NO radicals with He and D-2

机译：用于与他和D-2没有自由基的非弹性碰撞的成像衍射振荡

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摘要

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.
机译：我们呈现出状态到状态差异横截面，用于没有分子的碰撞（X-2 pi（1/2），J = 1/2，f），其中原子和ortho-d-2（J = 0）分子为碰撞能量的功能。使用STARK减速度和速度图成像的组合获得的高角度分辨率允许观察角度散射分布中的衍射振荡。观察到差分横截面的差异，特别地，观察到各个衍射峰之间的角间距之间的差异。由于D-2的质量和他几乎相等，并且由于D-2（J = 0）可以被认为是伪原子，因此与他相比，这些差异直接反映了更大的D-2尺寸。该观察结果与基于精确的AB初始NO-HE和NO-D-2电位能量表面的量子闭合耦合散射计算获得的横截面很好。对于后者，我们计算了新的NO-D-2电位能表面。通过AIP发布发布。

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