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

M. Karra; M. T. Cretu; B. Friedrich; S. Truppe; G. Meijer; J. Pérez-Ríos

doi:10.1103/PhysRevA.105.022808

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

M. Karra
, M. T. Cretu
, B. Friedrich
, S. Truppe
, G. Meijer
, J. Pérez-Ríos

Physics and Astronomy

Stony Brook University

Fritz Haber Institute of the Max Planck Society

Research output: Contribution to journal › Article › peer-review

3 Scopus citations

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.

Original language	English
Article number	022808
Journal	Physical Review A
Volume	105
Issue number	2
DOIs	https://doi.org/10.1103/PhysRevA.105.022808
State	Published - Feb 2022

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10.1103/PhysRevA.105.022808

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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.",

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AU - Cretu, M. T.

AU - Friedrich, B.

AU - Truppe, S.

AU - Meijer, G.

AU - Pérez-Ríos, J.

PY - 2022/2

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N2 - 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.

AB - 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.

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DO - 10.1103/PhysRevA.105.022808

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

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