Journal Article

PUBDB-2025-02450

http://join2-wiki.gsi.de/foswiki/pub/Main/Artwork/join2_logo100x88.png Site- and Energy-Selective Low-Energy Electron Emission by X-rays in the Aqueous Phase

Bloss, D. (Corresponding author)Extern* ; Dupuy, R.Extern* ; Trinter, F.Extern* ; Unger, I.Extern*XFEL.EU* ; Walsh, N.Extern* ; Oehrwall, G.Extern* ; Golchert, N.Extern* ; Klassen, G.Extern* ; Krone, A. P.Extern* ; Terao, Y.Extern* ; Viehmann, J.Extern* ; Wülfing, L. ; Richter, C.Extern* ; Buttersack, T.Extern* ; Cederbaum, L.Extern* ; Hergenhahn, U.Extern* ; Bjoerneholm, O.Extern*XFEL.EU* ; Ehresmann, A.Extern* ; Hans, A. (Corresponding author)Extern*

2025
ACS Publications Washington, DC

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Please use a persistent id in citations: doi:10.1021/jacs.5c06436  doi:10.3204/PUBDB-2025-02450

Abstract: Low-energy-electron emission from resonant Auger final states via intermolecular Coulombic decay (RA-ICD) has previously been described as a promising scenario for controlling radiation damage for medical purposes, but it has so far only been observed in prototypical atomic and molecular van der Waals dimers and clusters. Here, we report the experimental observation of RA-ICD in an aqueous solution. We show that for solvated Ca2+ ions, the emission can be very efficiently controlled by tuning the photon energy of exciting X-rays to inner-shell resonances of the ions. Our results provide the next step from demonstrating RA-ICD in relatively simple prototype systems to understanding the relevance and potential applications of ICD in real-life scenarios.

Note: Open Access

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Contributing Institute(s):

1. DOOR-User (DOOR ; HAS-User)

Research Program(s):

1. 6G3 - PETRA III (DESY) (POF4-6G3) (POF4-6G3)
2. FS-Proposal: I-20211422 (I-20211422) (I-20211422)
3. 05K22RK2 - Verbundprojekt 05K2022 - GPHASE-CC: Fertigstellung und Inbetriebnahme der Endstation zur Gasphasen-Spektroskopie bei BESSY. Teilprojekt 2: VMI und Realisierung koinzidenter Elektron-Photon Messungen. (BMBF-05K22RK2) (BMBF-05K22RK2)
4. 05K22RK1 - Verbundprojekt 05K2022 - TRANSALP: Zeit- & winkelaufgelöste Spektroskopie an Proben in der flüssigen Phase. Teilprojekt 2: Aufbau Liquid Jet und KI-basierte Datenanalyse. (BMBF-05K22RK1) (BMBF-05K22RK1)
5. SFB 1319 C06 - Photoneninduzierte chirale Wechselwirkungen zur Detektion und Trennung von Enantiomeren (C06*) (491565418) (491565418)
6. DFG project G:(GEPRIS)509471550 - Dynamik photoionisations-induzierter Prozesse in laser-präparierten Molekülen in der Gasphase und der wässrigen Phase (509471550) (509471550)
7. ETMD_ICEC - Efficient pathways to neutralization and radical production enabled by environment (692657) (692657)
8. AQUACHIRAL - Chiral aqueous-phase chemistry (883759) (883759)
9. SWEDEN-DESY - SWEDEN-DESY Collaboration (2020_Join2-SWEDEN-DESY) (2020_Join2-SWEDEN-DESY)

Experiment(s):

1. PETRA Beamline P04 (PETRA III)

Appears in the scientific report 2025

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Database coverage:
; ; ; BIOSIS Previews ; Biological Abstracts ; Chemical Reactions ; Clarivate Analytics Master Journal List ; Current Contents - Life Sciences ; Current Contents - Physical, Chemical and Earth Sciences ; Ebsco Academic Search ; Essential Science Indicators ; IF >= 15 ; Index Chemicus ; JCR ; Nationallizenz ; SCOPUS ; Science Citation Index Expanded ; Web of Science Core Collection

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