Probing the delocalized core-hole via inner-shell excitation in N<sub>2</sub>
نویسندگان
چکیده
Abstract The dispute about whether the 1 s core-hole is localized on one atom or delocalized over both in a homonuclear diatomic molecule has continued for decades, which been extensively studied by photoelectron and electron–ion coincidence spectroscopies. For N 2 , if delocalized, K-shell excitation into π g orbital should split two components, i.e., dipole-allowed transition from ungerade σ u state dipole-forbidden gerade state. However, only observed up to now. Here, we report inner-shell electron energy loss spectra of at different scattering angles with an incident 1500 eV resolution 65 meV. vibrational structures ( 1 s σ u stretchy="false">) − π g }_{g})}^{-1}{(1{\pi states have identified momentum transfers. splitting between ${(1{\sigma reverse symmetry determined be 67 ± 7 Moreover, transfer dependence behavior intensity ratio agrees theoretical predictions, as increasing maximum then decreasing. experimental observations clearly show that inner most electrons can described indicates atoms based process.
منابع مشابه
Inner-shell photoionization and core-hole decay of Xe and XeF2.
Photoionization cross sections and partial ion yields of Xe and XeF2 from Xe 3d(5/2), Xe 3d(3/2), and F 1s subshells in the 660-740 eV range are compared to explore effects of the F ligands. The Xe 3d-ϵf continuum shape resonances dominate the photoionization cross sections of both the atom and molecule, but prominent resonances appear in the XeF2 cross section due to nominal excitation of Xe 3...
متن کاملProbing the localized-to-delocalized transition.
Detailed understanding of the transition between localized and delocalized behaviour in mixed valence compounds has been elusive as evidenced by many interpretations of the Creutz-Taube ion, [(NH3)5Ru(pz)Ru(NH3)5]5+. In a review in 2001, experimental protocols and a systematic model to probe this region were proposed and applied to examples in the literature. The model included: (i) multiple or...
متن کاملProbing the Hofmeister effect with ultrafast core-hole spectroscopy.
In the current work, X-ray emission spectra of aqueous solutions of different inorganic salts within the Hofmeister series are presented. The results reflect the direct interaction of the ions with the water molecules and therefore, reveal general properties of the salt-water interactions. Within the experimental precision a significant effect of the ions on the water structure has been observe...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: New Journal of Physics
سال: 2022
ISSN: ['1367-2630']
DOI: https://doi.org/10.1088/1367-2630/ac6bb7