تقرير
High-Energy Molecular-Frame Photoelectron Angular Distributions: A Molecular Bond-Length Ruler
العنوان: | High-Energy Molecular-Frame Photoelectron Angular Distributions: A Molecular Bond-Length Ruler |
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المؤلفون: | Vela-Peréz, Isabel, Ota, Fukiko, Mhamdi, Abir, Tamura, Yoshiaki, Rist, Jonas, Melzer, Niklas, Uerken, Safak, Nalin, Giammarco, Anders, Nils, You, Daehyun, Kircher, Max, Janke, Christian, Waitz, Markus, Trinter, Florian, Guillemin, Renaud, Piancastelli, Maria Novella, Simon, Marc, Davis, Vernon T., Williams, Joshua B., Dörner, Reinhard, Hatada, Keisuke, Yamazaki, Kaoru, Fehre, Kilian, Demekhin, Philipp V., Ueda, Kiyoshi, Schöffler, Markus S., Jahnke, Till |
المصدر: | Phys. Chem. Chem. Phys., 2023, 25, 13784-13791 |
سنة النشر: | 2021 |
المجموعة: | Physics (Other) |
مصطلحات موضوعية: | Physics - Atomic Physics |
الوصف: | We present an experimental and theoretical study of core-level ionization of small hetero- and homo-nuclear molecules employing circularly polarized light and address molecular-frame photoelectron angular distributions in the light's polarization plane (CP-MFPADs). We find that the main forward-scattering peaks of CP-MFPADs are slightly tilted with respect to the molecular axis. We show that this tilt angle can be directly connected to the molecular bond length by a simple, universal formula. The extraction of the bond length becomes more accurate as the photoelectron energy is increased. We apply the derived formula to several examples of CP-MFPADs of C 1s and O 1s photoelectrons of CO, which have been measured experimentally or obtained by means of ab initio modeling. The photoelectron kinetic energies range from 70 to 1000~eV and the extracted bond lengths agree well with the known bond length of the CO molecule in its ground state. In addition, we discuss the influence of the back-scattering contribution that is superimposed over the analyzed forward-scattering peak in case of homo-nuclear diatomic molecules as N$_2$. |
نوع الوثيقة: | Working Paper |
DOI: | 10.1039/D2CP05942H |
URL الوصول: | http://arxiv.org/abs/2105.11897 |
رقم الأكسشن: | edsarx.2105.11897 |
قاعدة البيانات: | arXiv |
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