Collision‐induced transitions from N2(A’ 5Σ+g) to N2(B 3Πg) via the gateway mechanism
作者： Ch. Ottinger , L. G. Smirnova , A. F. Vilesov
DOI: 10.1063/1.467205
关键词: Beam (structure) 、 Atomic physics 、 Rotation 、 Intramolecular force 、 Work (thermodynamics) 、 Full width at half maximum 、 Coupling 、 Collision 、 High resolution 、 Chemistry
摘要: A beam containing N2 in long‐lived states was allowed to interact with target particles a collision cell. Intramolecular transitions A→B and W→B are induced, such as were studied earlier by us means of the subsequent B→A emission [R. Bachmann, X. Li, Ch. Ottinger, A. F. Vilesov, J. Chem. Phys. 96, 5151 (1992)]. In present work product observed under high resolution (1 FWHM). Most bands show typical quasithermal rotational contours. However, emissions from B state vibrational level v=10 sharp superimposed features observed. They assigned rotation/fine structure/Λ sublevel 3Πe2(12). This particular is perturbed A’ 5Σ+g state, serving so‐called gateway allow otherwise spin‐forbidden 5Σ+g→3Πg collision‐induced transition. According this mechanism, collisions scramble only levels within A’ while A’→B transition occurs spontaneously through S/O coupling. similar, less...
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