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Larsen KA, Trevisan CS, Lucchese RR, Heck S, Iskandar W, Champenois E, Gatton A, Moshammer R, Strom R, Severt T, Jochim B, Reedy D, Weller M, Landers AL, Williams JB, Ben-Itzhak I, Dörner R, Slaughter D, McCurdy CW, Weber T, Rescigno TN. Resonance signatures in the body-frame valence photoionization of CF4. Phys Chem Chem Phys 2018; 20:21075-21084. [DOI: 10.1039/c8cp03637c] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Photoionization of the 4t2 orbital of CF4 shows overlapping resonances close to threshold, leading to a striking inversion of the photoelectron angular distribution when viewed in the body-frame.
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Guillemin R, Decleva P, Stener M, Bomme C, Marin T, Journel L, Marchenko T, Kushawaha RK, Jänkälä K, Trcera N, Bowen KP, Lindle DW, Piancastelli MN, Simon M. Selecting core-hole localization or delocalization in CS2 by photofragmentation dynamics. Nat Commun 2015; 6:6166. [PMID: 25607354 DOI: 10.1038/ncomms7166] [Citation(s) in RCA: 49] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/19/2014] [Accepted: 12/19/2014] [Indexed: 12/13/2022] Open
Abstract
Electronic core levels in molecules are highly localized around one atomic site. However, in single-photon ionization of symmetric molecules, the question of core-hole localization versus delocalization over two equivalent atoms has long been debated as the answer lies at the heart of quantum mechanics. Here, using a joint experimental and theoretical study of core-ionized carbon disulfide (CS2), we demonstrate that it is possible to experimentally select distinct molecular-fragmentation pathways in which the core hole can be considered as either localized on one sulfur atom or delocalized between two indistinguishable sulfur atoms. This feat is accomplished by measuring photoelectron angular distributions within the frame of the molecule, directly probing entanglement or disentanglement of quantum pathways as a function of how the molecule dissociates.
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Affiliation(s)
- R Guillemin
- 1] Sorbonne Universités, UPMC Univ Paris 06, UMR 7614, Laboratoire de Chimie Physique Matière et Rayonnement, F-75005 Paris, France [2] CNRS, UMR 7614, Laboratoire de Chimie Physique Matière et Rayonnement, F-75005 Paris, France
| | - P Decleva
- 1] Dipartimento di Scienze Chimiche e Farmaceutiche, Università di Trieste, Via L. Giorgieri 1, I-34127 Trieste, Italy [2] Consorzio Interuniversitario Nazionale per la Scienza e Tecnologia dei Materiali Unita' di Trieste, 34127 Trieste, Italy [3] CNR-IOM DEMOCRITOS, 34149 Trieste, Italy
| | - M Stener
- 1] Dipartimento di Scienze Chimiche e Farmaceutiche, Università di Trieste, Via L. Giorgieri 1, I-34127 Trieste, Italy [2] Consorzio Interuniversitario Nazionale per la Scienza e Tecnologia dei Materiali Unita' di Trieste, 34127 Trieste, Italy [3] CNR-IOM DEMOCRITOS, 34149 Trieste, Italy
| | - C Bomme
- 1] Sorbonne Universités, UPMC Univ Paris 06, UMR 7614, Laboratoire de Chimie Physique Matière et Rayonnement, F-75005 Paris, France [2] CNRS, UMR 7614, Laboratoire de Chimie Physique Matière et Rayonnement, F-75005 Paris, France
| | - T Marin
- 1] Sorbonne Universités, UPMC Univ Paris 06, UMR 7614, Laboratoire de Chimie Physique Matière et Rayonnement, F-75005 Paris, France [2] CNRS, UMR 7614, Laboratoire de Chimie Physique Matière et Rayonnement, F-75005 Paris, France
| | - L Journel
- 1] Sorbonne Universités, UPMC Univ Paris 06, UMR 7614, Laboratoire de Chimie Physique Matière et Rayonnement, F-75005 Paris, France [2] CNRS, UMR 7614, Laboratoire de Chimie Physique Matière et Rayonnement, F-75005 Paris, France
| | - T Marchenko
- 1] Sorbonne Universités, UPMC Univ Paris 06, UMR 7614, Laboratoire de Chimie Physique Matière et Rayonnement, F-75005 Paris, France [2] CNRS, UMR 7614, Laboratoire de Chimie Physique Matière et Rayonnement, F-75005 Paris, France
| | - R K Kushawaha
- 1] Sorbonne Universités, UPMC Univ Paris 06, UMR 7614, Laboratoire de Chimie Physique Matière et Rayonnement, F-75005 Paris, France [2] CNRS, UMR 7614, Laboratoire de Chimie Physique Matière et Rayonnement, F-75005 Paris, France
| | - K Jänkälä
- Department of Physics, University of Oulu, Box 3000, 90014 Oulu, Finland
| | - N Trcera
- Synchrotron SOLEIL, l'Orme des Merisiers, Saint-Aubin, BP 48, 91192 Gif-sur-Yvette Cedex, France
| | - K P Bowen
- Department of Chemistry, University of Nevada, Las Vegas, Nevada 89154-4003, USA
| | - D W Lindle
- Department of Chemistry, University of Nevada, Las Vegas, Nevada 89154-4003, USA
| | - M N Piancastelli
- 1] Sorbonne Universités, UPMC Univ Paris 06, UMR 7614, Laboratoire de Chimie Physique Matière et Rayonnement, F-75005 Paris, France [2] CNRS, UMR 7614, Laboratoire de Chimie Physique Matière et Rayonnement, F-75005 Paris, France [3] Department of Physics and Astronomy, Uppsala University, PO Box 516, 75120 Uppsala, Sweden
| | - M Simon
- 1] Sorbonne Universités, UPMC Univ Paris 06, UMR 7614, Laboratoire de Chimie Physique Matière et Rayonnement, F-75005 Paris, France [2] CNRS, UMR 7614, Laboratoire de Chimie Physique Matière et Rayonnement, F-75005 Paris, France
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