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Correlated electron-nuclear dynamics in above-threshold multiphoton ionization of asymmetric molecule
The partition of the photon energy into the subsystems of molecules determines many photon-induced chemical and physical dynamics in laser-molecule interactions. The electron-nuclear energy sharing from multiphoton ionization of molecules has been used to uncover the correlated dynamics of the elect...
Autores principales: | , , , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
Nature Publishing Group
2017
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5316950/ https://www.ncbi.nlm.nih.gov/pubmed/28218294 http://dx.doi.org/10.1038/srep42585 |
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author | Wang, Zhuo Li, Min Zhou, Yueming Lan, Pengfei Lu, Peixiang |
author_facet | Wang, Zhuo Li, Min Zhou, Yueming Lan, Pengfei Lu, Peixiang |
author_sort | Wang, Zhuo |
collection | PubMed |
description | The partition of the photon energy into the subsystems of molecules determines many photon-induced chemical and physical dynamics in laser-molecule interactions. The electron-nuclear energy sharing from multiphoton ionization of molecules has been used to uncover the correlated dynamics of the electron and fragments. However, most previous studies focus on symmetric molecules. Here we study the electron-nuclear energy sharing in strong-field photoionization of HeH(2+) by solving the one-dimensional time-dependent Schrödinger equation (TDSE). Compared with symmetric molecules, the joint electron-nuclear energy spectrum (JES) of HeH(2+) reveals an anomalous energy shift at certain nuclear energies, while it disappears at higher and lower nuclear energies. Through tracing the time evolution of the wavepacket of bound states, we identify that this energy shift originates from the joint effect of the Stark shift, associated with the permanent dipole, and the Autler-Townes effect due to the coupling of the 2pσ and 2sσ states in strong fields. The energy shift in the JES appears at certain nuclear distances only when both Stark effect and Autler-Townes effect play important roles. We further demonstrate that the electron-nuclei energy sharing can be controlled by varying laser intensity for asymmetric molecules, providing alternative approaches to manipulate photochemical reactions for more complex molecules. |
format | Online Article Text |
id | pubmed-5316950 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2017 |
publisher | Nature Publishing Group |
record_format | MEDLINE/PubMed |
spelling | pubmed-53169502017-02-24 Correlated electron-nuclear dynamics in above-threshold multiphoton ionization of asymmetric molecule Wang, Zhuo Li, Min Zhou, Yueming Lan, Pengfei Lu, Peixiang Sci Rep Article The partition of the photon energy into the subsystems of molecules determines many photon-induced chemical and physical dynamics in laser-molecule interactions. The electron-nuclear energy sharing from multiphoton ionization of molecules has been used to uncover the correlated dynamics of the electron and fragments. However, most previous studies focus on symmetric molecules. Here we study the electron-nuclear energy sharing in strong-field photoionization of HeH(2+) by solving the one-dimensional time-dependent Schrödinger equation (TDSE). Compared with symmetric molecules, the joint electron-nuclear energy spectrum (JES) of HeH(2+) reveals an anomalous energy shift at certain nuclear energies, while it disappears at higher and lower nuclear energies. Through tracing the time evolution of the wavepacket of bound states, we identify that this energy shift originates from the joint effect of the Stark shift, associated with the permanent dipole, and the Autler-Townes effect due to the coupling of the 2pσ and 2sσ states in strong fields. The energy shift in the JES appears at certain nuclear distances only when both Stark effect and Autler-Townes effect play important roles. We further demonstrate that the electron-nuclei energy sharing can be controlled by varying laser intensity for asymmetric molecules, providing alternative approaches to manipulate photochemical reactions for more complex molecules. Nature Publishing Group 2017-02-20 /pmc/articles/PMC5316950/ /pubmed/28218294 http://dx.doi.org/10.1038/srep42585 Text en Copyright © 2017, The Author(s) http://creativecommons.org/licenses/by/4.0/ This work is licensed under a Creative Commons Attribution 4.0 International License. The images or other third party material in this article are included in the article’s Creative Commons license, unless indicated otherwise in the credit line; if the material is not included under the Creative Commons license, users will need to obtain permission from the license holder to reproduce the material. To view a copy of this license, visit http://creativecommons.org/licenses/by/4.0/ |
spellingShingle | Article Wang, Zhuo Li, Min Zhou, Yueming Lan, Pengfei Lu, Peixiang Correlated electron-nuclear dynamics in above-threshold multiphoton ionization of asymmetric molecule |
title | Correlated electron-nuclear dynamics in above-threshold multiphoton ionization of asymmetric molecule |
title_full | Correlated electron-nuclear dynamics in above-threshold multiphoton ionization of asymmetric molecule |
title_fullStr | Correlated electron-nuclear dynamics in above-threshold multiphoton ionization of asymmetric molecule |
title_full_unstemmed | Correlated electron-nuclear dynamics in above-threshold multiphoton ionization of asymmetric molecule |
title_short | Correlated electron-nuclear dynamics in above-threshold multiphoton ionization of asymmetric molecule |
title_sort | correlated electron-nuclear dynamics in above-threshold multiphoton ionization of asymmetric molecule |
topic | Article |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5316950/ https://www.ncbi.nlm.nih.gov/pubmed/28218294 http://dx.doi.org/10.1038/srep42585 |
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