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| Main Authors: | , , , , , , , , , |
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| Format: | Preprint |
| Published: |
2024
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| Subjects: | |
| Online Access: | https://arxiv.org/abs/2402.06419 |
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| _version_ | 1866917673307209728 |
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| author | Trinter, Florian Inhester, Ludger Püttner, Ralph Malerz, Sebastian Thürmer, Stephan Marchenko, Tatiana Piancastelli, Maria Novella Simon, Marc Winter, Bernd Hergenhahn, Uwe |
| author_facet | Trinter, Florian Inhester, Ludger Püttner, Ralph Malerz, Sebastian Thürmer, Stephan Marchenko, Tatiana Piancastelli, Maria Novella Simon, Marc Winter, Bernd Hergenhahn, Uwe |
| contents | We present a combined experimental and theoretical investigation of the radiationless decay spectrum of an O 1s double core hole in liquid water. Our experiments were carried out using liquid-jet electron spectroscopy from cylindrical microjets of normal and deuterated water. The signal of the double-core-hole spectral fingerprints (hypersatellites) of liquid water is clearly identified, with an intensity ratio to Auger decay of singly charged O 1s of 0.0014(5). We observe a significant isotope effect between liquid H$_2$O and D$_2$O. For theoretical modeling, the Auger electron spectrum of the central water molecule in a water pentamer was calculated using an electronic-structure toolkit combined with molecular-dynamics simulations to capture the influence of molecular rearrangement within the ultrashort lifetime of the double core hole. We obtained the static and dynamic Auger spectra for H$_2$O, (H$_2$O)$_5$, D$_2$O, and (D$_2$O)$_5$, instantaneous Auger spectra at selected times after core-level ionization, and the symmetrized oxygen-hydrogen distance as a function of time after double core ionization for all four prototypical systems. We consider this observation of liquid-water double core holes as a new tool to study ultrafast nuclear dynamics. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2402_06419 |
| institution | arXiv |
| publishDate | 2024 |
| record_format | arxiv |
| spellingShingle | Radiationless decay spectrum of O 1s double core holes in liquid water Trinter, Florian Inhester, Ludger Püttner, Ralph Malerz, Sebastian Thürmer, Stephan Marchenko, Tatiana Piancastelli, Maria Novella Simon, Marc Winter, Bernd Hergenhahn, Uwe Chemical Physics We present a combined experimental and theoretical investigation of the radiationless decay spectrum of an O 1s double core hole in liquid water. Our experiments were carried out using liquid-jet electron spectroscopy from cylindrical microjets of normal and deuterated water. The signal of the double-core-hole spectral fingerprints (hypersatellites) of liquid water is clearly identified, with an intensity ratio to Auger decay of singly charged O 1s of 0.0014(5). We observe a significant isotope effect between liquid H$_2$O and D$_2$O. For theoretical modeling, the Auger electron spectrum of the central water molecule in a water pentamer was calculated using an electronic-structure toolkit combined with molecular-dynamics simulations to capture the influence of molecular rearrangement within the ultrashort lifetime of the double core hole. We obtained the static and dynamic Auger spectra for H$_2$O, (H$_2$O)$_5$, D$_2$O, and (D$_2$O)$_5$, instantaneous Auger spectra at selected times after core-level ionization, and the symmetrized oxygen-hydrogen distance as a function of time after double core ionization for all four prototypical systems. We consider this observation of liquid-water double core holes as a new tool to study ultrafast nuclear dynamics. |
| title | Radiationless decay spectrum of O 1s double core holes in liquid water |
| topic | Chemical Physics |
| url | https://arxiv.org/abs/2402.06419 |