Vibrationally inelastic scattering of high- n Rydberg H atoms from N2 and O2.
Vibrationally inelastic scattering of high- n Rydberg H atoms from N2 and O2.
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DOI：
10.1103/physrevlett.86.3997
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发表时间：
2001-04
影响因子：
8.6
通讯作者：
B. Strazisar;Cheng Lin;H. Floyd Davis
中科院分区：
文献类型：
--
作者：
B. Strazisar;Cheng Lin;H. Floyd Davis
研究了在 E(coll) = 1.84 eV 时来自 N2 和 O2 的里德伯 H 原子 (n = 30-50) 的振动非弹性散射作为实验室偏转角的函数。平均而言，与 O2 碰撞时观察到的振动激发比与 N2 碰撞时多 4 倍。 O2 的振动激发主要是由碰撞引起的，在碰撞中，电子短暂地从 O2 转移到质子核心，而里德伯电子仍然是一个旁观者。这进一步证明自由电子模型适用于涉及离子核心的低能碰撞，导致大量动量转移。
The vibrationally inelastic scattering of Rydberg H atoms (n = 30-50) from N2 and O2 at E(coll) = 1.84 eV was studied as a function of laboratory deflection angle. On average, 4 times more vibrational excitation was observed in collisions with O2 than with N2. Vibrational excitation of O2 results largely from collisions in which an electron is briefly transferred from O2 to the proton core, while the Rydberg electron remains a spectator. This provides further evidence that the free electron model applies to low energy collisions involving the ionic core leading to substantial momentum transfer.