The angular distribution of O 1s photoelectrons emitted from uniaxially oriented methanol is studied experimentally and theoretically. We employed circularly polarized photons of an energy of hν = 550 eV for our investigations. We measured the three-dimensional photoelectron angular distributions of methanol, with the CH 3 –OH axis oriented in the polarization plane, by means of cold target recoil ion momentum spectroscopy. The experimental results are interpreted by single active electron calculations performed with the single center method. A comparative theoretical study of the respective molecular-frame angular distributions of O 1s photoelectrons of CO, performed for the same photoelectron kinetic energy and for a set of different internuclear distances, allows for disentangling the role of internuclear distance and the hydrogen atoms of methanol as compared to carbon monoxide.

中文翻译：

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单轴取向甲醇的O 1s光电子的角发射分布

实验和理论研究了单轴取向甲醇发射的O 1s光电子的角分布。我们使用hv = 550 eV能量的圆偏振光子进行研究。我们通过冷目标反冲离子动量谱测量了甲醇的三维光电子角分布，其中CH 3 -OH轴位于偏振平面内。通过使用单中心方法执行的单个有源电子计算来解释实验结果。对于相同的光电子动能和一组不同的核间距，对CO的O 1s光电子各自的分子框架角分布进行了比较理论研究，