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Rotational Waves SIGNED

Controlling and resolving rotational quantum states in a molecule-surface collision: Matter-wave magnetic interference experiments with ground state molecules.

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Project "Rotational Waves" data sheet

The following table provides information about the project.

Coordinator
SWANSEA UNIVERSITY 

Organization address
address: SINGLETON PARK
city: SWANSEA
postcode: SA2 8PP
website: www.swan.ac.uk

contact info
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surname: n.a.
function: n.a.
email: n.a.
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 Coordinator Country United Kingdom [UK]
 Total cost 2˙230˙400 €
 EC max contribution 2˙230˙400 € (100%)
 Programme 1. H2020-EU.1.1. (EXCELLENT SCIENCE - European Research Council (ERC))
 Code Call ERC-2017-COG
 Funding Scheme ERC-COG
 Starting year 2018
 Duration (year-month-day) from 2018-08-01   to  2023-07-31

 Partnership

Take a look of project's partnership.

# participants  country  role  EC contrib. [€] 
1    SWANSEA UNIVERSITY UK (SWANSEA) coordinator 2˙230˙400.00

Map

 Project objective

The interaction between a molecule and a solid surface is fundamental to a huge variety of research fields and applications, ranging from industrial heterogeneous catalysis and atmospheric chemistry on ice particles, to ultra-cold astrochemical reactions on cosmic dust. One molecular property that is essential for molecule surface interactions, but also particularly difficult to control and resolve, is the orientation & alignment of the rotational axis of the molecule i.e. the quantum rotation projection states. The existing paradigm is that control over this molecular property can be obtained either by photo-excitation schemes and/or by deflecting experiments using strong electric or magnetic fields. Using these approaches valuable insight was obtained, and the crucial role the rotation projection states have on the outcome of molecule-surface collision was demonstrated. However, the two approaches mentioned above can only be applied to a very small sub-group of systems, (typically on excited/paramagnetic species). Here, we propose a completely different approach which utilizes the rotational magnetic moment, which is a general molecular property, to control and resolve the projection rotation states of ground-state molecules. Our matter-wave approach involves passing a molecular beam through a specific series of magnetic fields, where the different wave components interfere and produce Rabi-oscillations characteristic of the molecular wave function before and after scattering. We present proof-of-principle results demonstrating the validity of our general approach, and describe the novel molecular interference and molecular spin echo measurements we will perform to obtain the much-awaited experimental benchmarks in this field.

 Publications

year authors and title journal last update
List of publications.
2018 C. Krüger, E. Lisitsin-Baranovsky, O. Ofer, P.-A. Turgeon, J. Vermette, P. Ayotte, G. Alexandrowicz
A magnetically focused molecular beam source for deposition of spin-polarised molecular surface layers
published pages: 164201, ISSN: 0021-9606, DOI: 10.1063/1.5048521
The Journal of Chemical Physics 149/16 2020-04-04
2019 Jonathan Vermette, Isabelle Braud, Pierre-Alexandre Turgeon, Gil Alexandrowicz, Patrick Ayotte
Quantum State-Resolved Characterization of a Magnetically Focused Beam of ortho -H 2 O
published pages: 9234-9239, ISSN: 1089-5639, DOI: 10.1021/acs.jpca.9b04294
The Journal of Physical Chemistry A 123/42 2020-03-23
2019 I. Litvin, Y. Alkoby, O. Godsi, G. Alexandrowicz, T. Maniv
Parallel and anti-parallel echoes in beam spin echo experiments
published pages: 381-391, ISSN: 2211-3797, DOI: 10.1016/j.rinp.2018.09.032
Results in Physics 12 2020-03-23

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