| DOI | Trouver le DOI : https://doi.org/10.1038/s41557-023-01231-z |
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| Auteur | Rechercher : Mi, Yonghao1Identifiant ORCID : https://orcid.org/0000-0002-2905-637X; Rechercher : Wang, EnliangIdentifiant ORCID : https://orcid.org/0000-0002-5703-6501; Rechercher : Dube, Zack1; Rechercher : Wang, Tian1Identifiant ORCID : https://orcid.org/0000-0002-7137-0725; Rechercher : Naumov, A. Y.1; Rechercher : Villeneuve, D. M.1; Rechercher : Corkum, P. B.1; Rechercher : Staudte, André1Identifiant ORCID : https://orcid.org/0000-0002-8284-3831 |
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| Affiliation | - Conseil national de recherches du Canada. Technologies de sécurité et de rupture
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| Bailleur de fonds | Rechercher : Deutsche Forschungsgemeinschaft; Rechercher : Alexander von Humboldt-Stiftung; Rechercher : United States Department of Defense | United States Air Force | U.S. Air Force Academy; Rechercher : Canadian Network for Research and Innovation in Machining Technology, Natural Sciences and Engineering Research Council of Canada |
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| Format | Texte, Article |
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| Résumé | The H₂–H₂ molecular dimer is of fundamental importance in the study of chemical interactions because of its unique bonding properties and its ability to model more complex systems. The trihydrogen cation H₃⁺ is also a key intermediate in a range of chemical processes in interstellar environments, such as the formation of various organic molecules and early stars. However, the unexpected high abundance of H₃⁺ in molecular clouds remains challenging to explain. Here using near-infrared, femtosecond laser pulses and coincidence momentum imaging, we find that the dominant channel after photoionization of a deuterium molecular dimer (D₂–D₂) is the ejection of a deuterium atom within a few hundred femtoseconds, leading to the formation of D₃⁺. The formation mechanism is supported and well-reproduced by ab initio molecular dynamics simulations. This pathway of D₃⁺ formation from ultracold D₂–D₂ gas may provide insights into the high abundance of H₃⁺ in the interstellar medium. |
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| Date de publication | 2023-06-01 |
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| Maison d’édition | Nature Research |
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| Dans | |
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| Données connexes | |
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| Langue | anglais |
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| Publications évaluées par des pairs | Oui |
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| Identificateur | 1231 |
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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 | 7d5cc773-ef19-414c-a338-dd0af19e520c |
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| Enregistrement créé | 2023-06-06 |
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| Enregistrement modifié | 2023-11-06 |
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