论文标题
观察He和N2光电离的光电载后部发射
Observation of Photoion Backward Emission in Photoionization of He and N2
论文作者
论文摘要
我们通过实验研究线性光子动量对在300 eV $ \ leq〜e_γ〜 \ leq $ 40 kev的能量范围内产生的光电和光电子的动量分布的影响。我们的结果表明，对于每个电离事件，光子动量都将赋予光子量，这实际上是系统的质量中心。然而，沿光传播方向的离子动量分布的平均值向后缩小了$ -3/5 $ $ $倍的光子动量。这些结果通过实验证实了90年的预测。
We experimentally investigate the effects of the linear photon momentum on the momentum distributions of photoions and photoelectrons generated in one-photon ionization in an energy range of 300 eV $\leq~E_γ~\leq$ 40 keV. Our results show that for each ionization event the photon momentum is imparted onto the photoion, which is essentially the system's center of mass. Nevertheless, the mean value of the ion momentum distribution along the light propagation direction is backward-directed by $-3/5$ times the photon momentum. These results experimentally confirm a 90 year old prediction.
