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Stopping molecular rotation using coherent ultra-low-energy magnetic manipulations

Rotational motion lies at the heart of intermolecular, molecule-surface chemistry and cold molecule science, motivating the development of methods to excite and de-excite rotations. Existing schemes involve perturbing the molecules with photons or electrons which supply or remove energy comparable t...

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Autores principales: Chadwick, Helen, Somers, Mark F., Stewart, Aisling C., Alkoby, Yosef, Carter, Thomas J. D., Butkovicova, Dagmar, Alexandrowicz, Gil
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Nature Publishing Group UK 2022
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9050693/
https://www.ncbi.nlm.nih.gov/pubmed/35484103
http://dx.doi.org/10.1038/s41467-022-29830-3
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author Chadwick, Helen
Somers, Mark F.
Stewart, Aisling C.
Alkoby, Yosef
Carter, Thomas J. D.
Butkovicova, Dagmar
Alexandrowicz, Gil
author_facet Chadwick, Helen
Somers, Mark F.
Stewart, Aisling C.
Alkoby, Yosef
Carter, Thomas J. D.
Butkovicova, Dagmar
Alexandrowicz, Gil
author_sort Chadwick, Helen
collection PubMed
description Rotational motion lies at the heart of intermolecular, molecule-surface chemistry and cold molecule science, motivating the development of methods to excite and de-excite rotations. Existing schemes involve perturbing the molecules with photons or electrons which supply or remove energy comparable to the rotational level spacing. Here, we study the possibility of de-exciting the molecular rotation of a D(2) molecule, from J = 2 to the non-rotating J = 0 state, without using an energy-matched perturbation. We show that passing the beam through a 1 m long magnetic field, which splits the rotational projection states by only 10(−12 )eV, can change the probability that a molecule-surface collision will stop a molecule from rotating and lose rotational energy which is 9 orders larger than that of the magnetic manipulation. Calculations confirm that different rotational orientations have different de-excitation probabilities but underestimate rotational flips (∆m(J)[Formula: see text] 0), highlighting the importance of the results as a sensitive benchmark for further developing theoretical models of molecule-surface interactions.
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spelling pubmed-90506932022-04-30 Stopping molecular rotation using coherent ultra-low-energy magnetic manipulations Chadwick, Helen Somers, Mark F. Stewart, Aisling C. Alkoby, Yosef Carter, Thomas J. D. Butkovicova, Dagmar Alexandrowicz, Gil Nat Commun Article Rotational motion lies at the heart of intermolecular, molecule-surface chemistry and cold molecule science, motivating the development of methods to excite and de-excite rotations. Existing schemes involve perturbing the molecules with photons or electrons which supply or remove energy comparable to the rotational level spacing. Here, we study the possibility of de-exciting the molecular rotation of a D(2) molecule, from J = 2 to the non-rotating J = 0 state, without using an energy-matched perturbation. We show that passing the beam through a 1 m long magnetic field, which splits the rotational projection states by only 10(−12 )eV, can change the probability that a molecule-surface collision will stop a molecule from rotating and lose rotational energy which is 9 orders larger than that of the magnetic manipulation. Calculations confirm that different rotational orientations have different de-excitation probabilities but underestimate rotational flips (∆m(J)[Formula: see text] 0), highlighting the importance of the results as a sensitive benchmark for further developing theoretical models of molecule-surface interactions. Nature Publishing Group UK 2022-04-28 /pmc/articles/PMC9050693/ /pubmed/35484103 http://dx.doi.org/10.1038/s41467-022-29830-3 Text en © The Author(s) 2022 https://creativecommons.org/licenses/by/4.0/Open Access This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made. The images or other third party material in this article are included in the article’s Creative Commons license, unless indicated otherwise in a credit line to the material. If material is not included in the article’s Creative Commons license and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this license, visit http://creativecommons.org/licenses/by/4.0/ (https://creativecommons.org/licenses/by/4.0/) .
spellingShingle Article
Chadwick, Helen
Somers, Mark F.
Stewart, Aisling C.
Alkoby, Yosef
Carter, Thomas J. D.
Butkovicova, Dagmar
Alexandrowicz, Gil
Stopping molecular rotation using coherent ultra-low-energy magnetic manipulations
title Stopping molecular rotation using coherent ultra-low-energy magnetic manipulations
title_full Stopping molecular rotation using coherent ultra-low-energy magnetic manipulations
title_fullStr Stopping molecular rotation using coherent ultra-low-energy magnetic manipulations
title_full_unstemmed Stopping molecular rotation using coherent ultra-low-energy magnetic manipulations
title_short Stopping molecular rotation using coherent ultra-low-energy magnetic manipulations
title_sort stopping molecular rotation using coherent ultra-low-energy magnetic manipulations
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9050693/
https://www.ncbi.nlm.nih.gov/pubmed/35484103
http://dx.doi.org/10.1038/s41467-022-29830-3
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