DOI | Trouver le DOI : https://doi.org/10.1126/science.1163077 |
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Auteur | Rechercher : Li, Wen; Rechercher : Zhou, Xibin; Rechercher : Lock, Robynne; Rechercher : Patchkovskii, Serguei1; Rechercher : Stolow, Albert1; Rechercher : Kapteyn, Henry C.; Rechercher : Murnane, Margaret M. |
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Affiliation | - Conseil national de recherches du Canada. Institut Steacie des sciences moléculaires du CNRC
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Format | Texte, Article |
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Résumé | The attosecond time-scale electron-recollision process that underlies high harmonic generation has uncovered extremely rapid electronic dynamics in atoms and diatomics. We showed that high harmonic generation can reveal coupled electronic and nuclear dynamics in polyatomic molecules. By exciting large amplitude vibrations in dinitrogen tetraoxide, we showed that tunnel ionization accesses the ground state of the ion at the outer turning point of the vibration but populates the first excited state at the inner turning point. This state-switching mechanism is manifested as bursts of high harmonic light that is emitted mostly at the outer turning point. Theoretical calculations attribute the large modulation to suppressed emission from the first excited state of the ion. More broadly, these results show that high harmonic generation and strong-field ionization in polyatomic molecules undergoing bonding or configurational changes involve the participation of multiple molecular orbitals. |
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Date de publication | 2008-11-21 |
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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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Numéro NPARC | 21277112 |
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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 | b51703f0-2977-4fe1-9c56-37c6dc1f3aa0 |
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Enregistrement créé | 2015-12-02 |
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Enregistrement modifié | 2020-04-15 |
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