Strong Angular Oscillation of Rotationally Resolved Differential Cross Section in the H + HD → H <subscript>2</subscript> + D Reaction at the Collision Energy of 2.07 eV: Evidence of Geometric Phase Effects.
In: The journal of physical chemistry. A, Jg. 128 (2024-05-23), Heft 20, S. 4007-4013
Online
academicJournal
Zugriff:
Geometric phase (GP) effects in chemical reactions are subtle quantum phenomena that are challenging to identify. In this work, we report a joint experimental and theoretical study of the H + HD → H 2 + D reaction at a collision energy of 2.07 eV, which is far below the energy of the conical intersection of 2.53 eV. The rotationally state-resolved differential cross sections were measured by a crossed-beam experiment with the scheme of D-atom Rydberg tagging time-of-flight detection. Experimental angular distributions of three rotational states of H 2 products exhibit notable variation near the backward scattering direction. Time-dependent quantum mechanics calculations (TDQMs) were carried out at the same collision energy, with and without the inclusion of GP. The experimental angular distributions are in good agreement with TDQM results with the inclusion of GP but do not agree with TDQM results without the inclusion of GP. This work demonstrates the existence of GP effects at energy far below the conical intersection.
Titel: |
Strong Angular Oscillation of Rotationally Resolved Differential Cross Section in the H + HD → H <subscript>2</subscript> + D Reaction at the Collision Energy of 2.07 eV: Evidence of Geometric Phase Effects.
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Autor/in / Beteiligte Person: | Wang, Y ; Wang, W ; Dai, D ; Huang, J ; Xiao, C |
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Zeitschrift: | The journal of physical chemistry. A, Jg. 128 (2024-05-23), Heft 20, S. 4007-4013 |
Veröffentlichung: | Washington, D.C. : American Chemical Society, c1997-, 2024 |
Medientyp: | academicJournal |
ISSN: | 1520-5215 (electronic) |
DOI: | 10.1021/acs.jpca.4c01949 |
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