Molecular alignment in degenerated dissociation channels in strong laser fields
Abstract In this work, we study strong-field molecular alignment in, for the first time, degenerated channels following the same charged states of molecules. By measuring the angular distribution of dissociation fragments from two degenerated N+ + N+ channels of N2, we observe an opposite angular di...
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2017-05-01
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doaj-4986b7bdea2b46d183fc2265d8770cc92020-12-08T00:40:04ZengNature Publishing GroupScientific Reports2045-23222017-05-01711710.1038/s41598-017-02738-5Molecular alignment in degenerated dissociation channels in strong laser fieldsWei Lai0Alan Heins1Chunlei Guo2The Institute of Optics, University of RochesterThe Institute of Optics, University of RochesterThe Institute of Optics, University of RochesterAbstract In this work, we study strong-field molecular alignment in, for the first time, degenerated channels following the same charged states of molecules. By measuring the angular distribution of dissociation fragments from two degenerated N+ + N+ channels of N2, we observe an opposite angular distribution development in these two channels, one expanding and one contracting, when the laser intensity increases. Our further study shows that the expanding channel comes from a nonsequential transition, while the contracting channel involves a sequential transition. We also study the time sequence of the sequential and nonsequential transitions and find that the opposite angular distribution development is due to the different degrees of molecular alignment in these two degenerated channels.https://doi.org/10.1038/s41598-017-02738-5 |
collection |
DOAJ |
language |
English |
format |
Article |
sources |
DOAJ |
author |
Wei Lai Alan Heins Chunlei Guo |
spellingShingle |
Wei Lai Alan Heins Chunlei Guo Molecular alignment in degenerated dissociation channels in strong laser fields Scientific Reports |
author_facet |
Wei Lai Alan Heins Chunlei Guo |
author_sort |
Wei Lai |
title |
Molecular alignment in degenerated dissociation channels in strong laser fields |
title_short |
Molecular alignment in degenerated dissociation channels in strong laser fields |
title_full |
Molecular alignment in degenerated dissociation channels in strong laser fields |
title_fullStr |
Molecular alignment in degenerated dissociation channels in strong laser fields |
title_full_unstemmed |
Molecular alignment in degenerated dissociation channels in strong laser fields |
title_sort |
molecular alignment in degenerated dissociation channels in strong laser fields |
publisher |
Nature Publishing Group |
series |
Scientific Reports |
issn |
2045-2322 |
publishDate |
2017-05-01 |
description |
Abstract In this work, we study strong-field molecular alignment in, for the first time, degenerated channels following the same charged states of molecules. By measuring the angular distribution of dissociation fragments from two degenerated N+ + N+ channels of N2, we observe an opposite angular distribution development in these two channels, one expanding and one contracting, when the laser intensity increases. Our further study shows that the expanding channel comes from a nonsequential transition, while the contracting channel involves a sequential transition. We also study the time sequence of the sequential and nonsequential transitions and find that the opposite angular distribution development is due to the different degrees of molecular alignment in these two degenerated channels. |
url |
https://doi.org/10.1038/s41598-017-02738-5 |
work_keys_str_mv |
AT weilai molecularalignmentindegenerateddissociationchannelsinstronglaserfields AT alanheins molecularalignmentindegenerateddissociationchannelsinstronglaserfields AT chunleiguo molecularalignmentindegenerateddissociationchannelsinstronglaserfields |
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1724396069019713536 |