• 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>The Journal of Chemical Physics >Energy dependent parity-pair behavior in NO plus He collisions
【24h】

Energy dependent parity-pair behavior in NO plus He collisions

机译：能量依赖性奇偶校正对行为没有加上他的碰撞

获取原文
获取原文并翻译 | 示例
           
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

Colliding molecules behave fundamentally differently at high and low collision energies. At high energies, a collision can be described to a large extent using classical mechanics, and the scattering process can be compared to a billiard-ball-like collision. At low collision energies, the wave character of the collision partners dominates, and only quantum mechanics can predict the outcome of an encounter. It is, however, not so clear how these limits evolve into each other as a function of the collision energy. Here, we investigate and visualize this evolution using a special feature of the differential cross sections for inelastic collisions between NO radicals and He atoms. The so-called "parity-pair" transitions have similar differential cross sections at high collision energies, whereas their cross sections are significantly different in the quantum regime at low energies. These transitions can be used as a probe for the quantum nature of the collision process. The similarity of the parity-pair differential cross sections at high energies could be theoretically explained if the first-order Born approximation were applicable. We found, however, that the anisotropy of the NO-He interaction potential is too strong for the first-order Born approximation to be valid, so higher-order perturbations must be taken into account. Published by AIP Publishing.
机译：碰撞分子在高低碰撞能量和低碰撞能量方面表现得不同。在高能量下，可以使用经典力学在很大程度上在很大程度上描述碰撞，并且可以将散射过程与台球碰撞进行比较。在低碰撞能量下，碰撞伙伴的波形主导，并且只有量子力学可以预测遭遇的结果。然而，这不是清楚这些限制如何彼此演变为碰撞能量。在这里，我们使用差分横截面的特殊特征来调查和可视化这一演变，对于不自由基和他原子之间的非弹性碰撞。所谓的“奇偶校对”转变在高碰撞能量下具有相似的差剖视图，而它们的横截面在低能量下的量子状态下显着不同。这些过渡可以用作碰撞过程量子性质的探针。如果适用于一阶近似近似，则可以理论地解释高能量处的奇偶校验差分横截面的相似性。但是，我们发现，无论何种互动潜力的各向异性都太强大，对于有效的一流出生近似是有效的，因此必须考虑更高阶的扰动。通过AIP发布发布。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号