Core-level interatomic Coulombic decay in van der Waals clusters
We report on the experimental observation of the direct decay of a core vacancy in van der Waals clusters by emission of a fast electron from a neighboring atom. The process can be regarded as an interatomic Coulombic decay of core holes (core-level ICD). We identify it unambiguously by electron-ele...
| Main Authors: | , , , , , , , , , , , , |
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| Format: | Article |
| Language: | English |
| Published: |
American Physical Society
2020-01-01
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| Series: | Physical Review Research |
| Online Access: | http://doi.org/10.1103/PhysRevResearch.2.012022 |
| _version_ | 1797211635317735424 |
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| author | Andreas Hans Catmarna Küstner-Wetekam Philipp Schmidt Christian Ozga Xaver Holzapfel Huda Otto Christina Zindel Clemens Richter Lorenz S. Cederbaum Arno Ehresmann Uwe Hergenhahn Nikolai V. Kryzhevoi André Knie |
| author_facet | Andreas Hans Catmarna Küstner-Wetekam Philipp Schmidt Christian Ozga Xaver Holzapfel Huda Otto Christina Zindel Clemens Richter Lorenz S. Cederbaum Arno Ehresmann Uwe Hergenhahn Nikolai V. Kryzhevoi André Knie |
| author_sort | Andreas Hans |
| collection | DOAJ |
| description | We report on the experimental observation of the direct decay of a core vacancy in van der Waals clusters by emission of a fast electron from a neighboring atom. The process can be regarded as an interatomic Coulombic decay of core holes (core-level ICD). We identify it unambiguously by electron-electron and electron-electron-photon coincidence spectroscopy of the decay of 2p vacancies in Ar clusters. While several earlier works reported the absence of this channel, we find core-level ICD to be of considerable significance and quantify the branching ratio of this nonlocal electron emission to conventional local Auger decay as (0.8±0.2)%. Our results are supported by calculations on smaller clusters and show a reasonable agreement. This report on a successfully performed electron-electron-photon coincidence experiment provides a perspective for explorations of matter exposed to ionizing radiation. The observed core-level ICD is proposed to be of general importance for studies on charge redistribution after core-level photoionization where van der Waals clusters are often used as prototype systems. |
| first_indexed | 2024-04-24T10:29:37Z |
| format | Article |
| id | doaj.art-dcf0195c896c4671bbca78ac5a46eb58 |
| institution | Directory Open Access Journal |
| issn | 2643-1564 |
| language | English |
| last_indexed | 2024-04-24T10:29:37Z |
| publishDate | 2020-01-01 |
| publisher | American Physical Society |
| record_format | Article |
| series | Physical Review Research |
| spelling | doaj.art-dcf0195c896c4671bbca78ac5a46eb582024-04-12T16:48:54ZengAmerican Physical SocietyPhysical Review Research2643-15642020-01-012101202210.1103/PhysRevResearch.2.012022Core-level interatomic Coulombic decay in van der Waals clustersAndreas HansCatmarna Küstner-WetekamPhilipp SchmidtChristian OzgaXaver HolzapfelHuda OttoChristina ZindelClemens RichterLorenz S. CederbaumArno EhresmannUwe HergenhahnNikolai V. KryzhevoiAndré KnieWe report on the experimental observation of the direct decay of a core vacancy in van der Waals clusters by emission of a fast electron from a neighboring atom. The process can be regarded as an interatomic Coulombic decay of core holes (core-level ICD). We identify it unambiguously by electron-electron and electron-electron-photon coincidence spectroscopy of the decay of 2p vacancies in Ar clusters. While several earlier works reported the absence of this channel, we find core-level ICD to be of considerable significance and quantify the branching ratio of this nonlocal electron emission to conventional local Auger decay as (0.8±0.2)%. Our results are supported by calculations on smaller clusters and show a reasonable agreement. This report on a successfully performed electron-electron-photon coincidence experiment provides a perspective for explorations of matter exposed to ionizing radiation. The observed core-level ICD is proposed to be of general importance for studies on charge redistribution after core-level photoionization where van der Waals clusters are often used as prototype systems.http://doi.org/10.1103/PhysRevResearch.2.012022 |
| spellingShingle | Andreas Hans Catmarna Küstner-Wetekam Philipp Schmidt Christian Ozga Xaver Holzapfel Huda Otto Christina Zindel Clemens Richter Lorenz S. Cederbaum Arno Ehresmann Uwe Hergenhahn Nikolai V. Kryzhevoi André Knie Core-level interatomic Coulombic decay in van der Waals clusters Physical Review Research |
| title | Core-level interatomic Coulombic decay in van der Waals clusters |
| title_full | Core-level interatomic Coulombic decay in van der Waals clusters |
| title_fullStr | Core-level interatomic Coulombic decay in van der Waals clusters |
| title_full_unstemmed | Core-level interatomic Coulombic decay in van der Waals clusters |
| title_short | Core-level interatomic Coulombic decay in van der Waals clusters |
| title_sort | core level interatomic coulombic decay in van der waals clusters |
| url | http://doi.org/10.1103/PhysRevResearch.2.012022 |
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