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Dynamics of translational and rotational thermalization of AlF molecules via collisions with cryogenic helium

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Karra,  Mallikarjun
Molecular Physics, Fritz Haber Institute, Max Planck Society;

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Cretu,  Miruna T.
Molecular Physics, Fritz Haber Institute, Max Planck Society;

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Friedrich,  Bretislav
Molecular Physics, Fritz Haber Institute, Max Planck Society;

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Truppe,  Stefan
Molecular Physics, Fritz Haber Institute, Max Planck Society;

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Meijer,  Gerard
Molecular Physics, Fritz Haber Institute, Max Planck Society;

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Pérez-Ríos,  Jesús
Molecular Physics, Fritz Haber Institute, Max Planck Society;

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PhysRevA.105.022808.pdf
(Publisher version), 1022KB

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Citation

Karra, M., Cretu, M. T., Friedrich, B., Truppe, S., Meijer, G., & Pérez-Ríos, J. (2022). Dynamics of translational and rotational thermalization of AlF molecules via collisions with cryogenic helium. Physical Review A, 105(2): 022808. doi:10.1103/PhysRevA.105.022808.


Cite as: https://hdl.handle.net/21.11116/0000-000A-0827-2
Abstract
We investigated helium-mediated translational and rotational thermalization of the aluminum monofluoride (AlF) molecule at cryogenic temperatures via an ab initio potential energy surface (PES) and quantum multichannel scattering theory. Our examination of the elastic and rotationally inelastic channels revealed that helium is an efficient quencher of AlF at temperatures relevant to buffer gas cooling experiments (∼1 mK to 10 K). We also showed that this conclusion is robust against possible inaccuracies of the PES.