The effect of collisions on the rotational angular momentum of diatomic molecules studied using polarized light

P. T. Arndt; J. Huennekens; C. Packard; V. Tran; J. Carey; R. Livingston; V. M. Marcune; B. A. Rowe; J. Ng; J. Qi; A. M. Lyyra; E. H. Ahmed

doi:10.1063/5.0024380

The effect of collisions on the rotational angular momentum of diatomic molecules studied using polarized light

P. T. Arndt, J. Huennekens, C. Packard, V. Tran, J. Carey, R. Livingston, V. M. Marcune, B. A. Rowe, J. Ng, J. Qi, A. M. Lyyra, E. H. Ahmed

Division of Science (Berks)

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

Abstract

We report results of an experimental study of the changes in the alignment of the rotational angular momentum of diatomic molecules during elastic collisions. The experiment involved collisions of diatomic lithium molecules in the A1ςu+ excited electronic state with noble gas atoms (helium and argon) in a thermal gas phase sample. Polarized light for excitation was combined with the detection of polarization-specific fluorescence in order to achieve magnetic sublevel state selectivity. We also report results for rotationally inelastic collisions of Li2 in the lowest lying rotational levels of the A1ςu+v=5 vibrational state with noble gas atoms.

Original language	English (US)
Article number	184310
Journal	Journal of Chemical Physics
Volume	153
Issue number	18
DOIs	https://doi.org/10.1063/5.0024380
State	Published - Nov 14 2020

All Science Journal Classification (ASJC) codes

General Physics and Astronomy
Physical and Theoretical Chemistry

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10.1063/5.0024380

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title = "The effect of collisions on the rotational angular momentum of diatomic molecules studied using polarized light",

abstract = "We report results of an experimental study of the changes in the alignment of the rotational angular momentum of diatomic molecules during elastic collisions. The experiment involved collisions of diatomic lithium molecules in the A1ςu+ excited electronic state with noble gas atoms (helium and argon) in a thermal gas phase sample. Polarized light for excitation was combined with the detection of polarization-specific fluorescence in order to achieve magnetic sublevel state selectivity. We also report results for rotationally inelastic collisions of Li2 in the lowest lying rotational levels of the A1ςu+v=5 vibrational state with noble gas atoms.",

author = "Arndt, {P. T.} and J. Huennekens and C. Packard and V. Tran and J. Carey and R. Livingston and Marcune, {V. M.} and Rowe, {B. A.} and J. Ng and J. Qi and Lyyra, {A. M.} and Ahmed, {E. H.}",

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day = "14",

doi = "10.1063/5.0024380",

language = "English (US)",

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TY - JOUR

T1 - The effect of collisions on the rotational angular momentum of diatomic molecules studied using polarized light

AU - Arndt, P. T.

AU - Huennekens, J.

AU - Packard, C.

AU - Tran, V.

AU - Carey, J.

AU - Livingston, R.

AU - Marcune, V. M.

AU - Rowe, B. A.

AU - Ng, J.

AU - Qi, J.

AU - Lyyra, A. M.

AU - Ahmed, E. H.

PY - 2020/11/14

Y1 - 2020/11/14

N2 - We report results of an experimental study of the changes in the alignment of the rotational angular momentum of diatomic molecules during elastic collisions. The experiment involved collisions of diatomic lithium molecules in the A1ςu+ excited electronic state with noble gas atoms (helium and argon) in a thermal gas phase sample. Polarized light for excitation was combined with the detection of polarization-specific fluorescence in order to achieve magnetic sublevel state selectivity. We also report results for rotationally inelastic collisions of Li2 in the lowest lying rotational levels of the A1ςu+v=5 vibrational state with noble gas atoms.

AB - We report results of an experimental study of the changes in the alignment of the rotational angular momentum of diatomic molecules during elastic collisions. The experiment involved collisions of diatomic lithium molecules in the A1ςu+ excited electronic state with noble gas atoms (helium and argon) in a thermal gas phase sample. Polarized light for excitation was combined with the detection of polarization-specific fluorescence in order to achieve magnetic sublevel state selectivity. We also report results for rotationally inelastic collisions of Li2 in the lowest lying rotational levels of the A1ςu+v=5 vibrational state with noble gas atoms.

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JO - Journal of Chemical Physics

JF - Journal of Chemical Physics

IS - 18

M1 - 184310

ER -

The effect of collisions on the rotational angular momentum of diatomic molecules studied using polarized light

Abstract

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