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The effect of collisions on the rotational angular momentum of diatomic molecules studied using polarized light.
Arndt, P T; Huennekens, J; Packard, C; Tran, V; Carey, J; Livingston, R; Marcune, V M; Rowe, B A; Ng, J; Qi, J; Lyyra, A M; Ahmed, E H.
Affiliation
  • Arndt PT; Physics Department, Temple University, Philadelphia, Pennsylvania 19122, USA.
  • Huennekens J; Physics Department, Lehigh University, Bethlehem, Pennsylvania 18015, USA.
  • Packard C; Physics Department, Temple University, Philadelphia, Pennsylvania 19122, USA.
  • Tran V; Physics Department, Temple University, Philadelphia, Pennsylvania 19122, USA.
  • Carey J; Physics Department, Temple University, Philadelphia, Pennsylvania 19122, USA.
  • Livingston R; Physics Department, Temple University, Philadelphia, Pennsylvania 19122, USA.
  • Marcune VM; Physics Department, Temple University, Philadelphia, Pennsylvania 19122, USA.
  • Rowe BA; Physics Department, Temple University, Philadelphia, Pennsylvania 19122, USA.
  • Ng J; Physics Department, Temple University, Philadelphia, Pennsylvania 19122, USA.
  • Qi J; Department of Physics and Astronomy, Penn State University, Berks Campus, Reading, Pennsylvania 19610, USA.
  • Lyyra AM; Physics Department, Temple University, Philadelphia, Pennsylvania 19122, USA.
  • Ahmed EH; Physics Department, Temple University, Philadelphia, Pennsylvania 19122, USA.
J Chem Phys ; 153(18): 184310, 2020 Nov 14.
Article in En | MEDLINE | ID: mdl-33187424
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.
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Full text: 1 Collection: 01-internacional Database: MEDLINE Language: En Journal: J Chem Phys Year: 2020 Type: Article Affiliation country: United States
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PubMed Links
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Full text: 1 Collection: 01-internacional Database: MEDLINE Language: En Journal: J Chem Phys Year: 2020 Type: Article Affiliation country: United States