Electronic quenching of O({sup 1}D) by Xe: Oscillations in the product angular distribution and their dependence on collision energy

Journal Article · Fri Aug 07 00:00:00 EDT 2015 · Journal of Chemical Physics

DOI:https://doi.org/10.1063/1.4927705· OSTI ID:22493490

Garofalo, Lauren A.; Smith, Mica C. ^[1]; Kłos, Jacek ^[2]

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1. Department of Chemistry, University of California, Berkeley, California 94720 (United States)
2. Department of Chemistry and Biochemistry, University of Maryland, College Park, Maryland 20742-2021 (United States)

The dynamics of the O({sup 1}D) + Xe electronic quenching reaction was investigated in a crossed beam experiment at four collision energies. Marked large-scale oscillations in the differential cross sections were observed for the inelastic scattering products, O({sup 3}P) and Xe. The shape and relative phases of the oscillatory structure depend strongly on collision energy. Comparison of the experimental results with time-independent scattering calculations shows qualitatively that this behavior is caused by Stueckelberg interferences, for which the quantum phases of the multiple reaction pathways accessible during electronic quenching constructively and destructively interfere.

• OSTI ID: 22493490
• Journal Information: Journal of Chemical Physics, Journal Name: Journal of Chemical Physics Journal Issue: 5 Vol. 143; ISSN JCPSA6; ISSN 0021-9606
• Country of Publication: United States
• Language: English

Related Subjects

74 ATOMIC AND MOLECULAR PHYSICS
ANGULAR DISTRIBUTION
ATOM COLLISIONS
ATOMIC BEAMS
COLLIDING BEAMS
COMPARATIVE EVALUATIONS
DIFFERENTIAL CROSS SECTIONS
ENERGY DEPENDENCE
INELASTIC SCATTERING
INTERFERENCE
OSCILLATIONS
OXYGEN
QUENCHING
XENON