| Téléchargement | - Voir la version finale : Tracking the ionization site in neutral molecules (PDF, 2.8 Mio)
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| DOI | Trouver le DOI : https://doi.org/10.1103/PhysRevLett.127.213201 |
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| Auteur | Rechercher : Ortmann, L.Identifiant ORCID : https://orcid.org/0000-0002-2665-8471; Rechercher : Alshafey, A.; Rechercher : Staudte, A.1; Rechercher : Landsman, A. S. |
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| Affiliation | - Conseil national de recherches Canada. Technologies de sécurité et de rupture
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| Format | Texte, Article |
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| Résumé | When a diatomic molecule is exposed to intense light, the valence electron may tunnel from a higher potential (corresponding to an upfield atom) due to the suppressed internuclear barrier. This process is known as ionization enhancement and is a key mechanism in strong field ionization of molecules. Alternatively, the bound electron wave function can evolve adiabatically in the laser field, resulting in ionization from the downfield atom. Here, we introduce a method to quantify the relative contribution of these two processes. Applying this method to experimentally measured electron momenta distributions following strong field ionization of N₂ with infrared laser light, we find approximately a 2∶1 ratio of electrons ionized from a downfield atom, relative to upfield. This suggests that the bound state wave function largely adapts adiabatically to the changing laser field, although the nonadiabatic process of ionization enhancement still contributes even in neutral molecules. Our method can be applied to any diatomic neutral molecule to better understand the evolution of the initially bound electron wave packet and hence the nature of the molecular ionization process. |
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| Date de publication | 2021-11-16 |
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| Maison d’édition | American Physical Society |
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| Licence | |
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| Dans | |
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| Langue | anglais |
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| Publications évaluées par des pairs | Oui |
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| Exporter la notice | Exporter en format RIS |
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| Signaler une correction | Signaler une correction (s'ouvre dans un nouvel onglet) |
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| Identificateur de l’enregistrement | a68000ca-f42d-42b7-9388-d2efc82f18ff |
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| Enregistrement créé | 2022-02-18 |
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| Enregistrement modifié | 2022-02-22 |
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