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Rotational and electronic anisotropy in no X2Π from the photodissociation of CH3ONO

✍ Scribed by F. Lahmani; C. Lardeux; D. Solgadi

Publisher
Elsevier Science
Year
1986
Tongue
English
Weight
647 KB
Volume
129
Category
Article
ISSN
0009-2614

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✦ Synopsis

Alignment effects in the highly rotating NO X %I vn = 1 fragment generated from photodissociation of CHaONO mr* at 355 nm have been probed by two-photon laser-induced fluorescence spectra. From polarization experiments the rotational angular momentum of NO fragments was shown to be aligned preferentially along the transition moment of the parent molecule. The populations of the A doublet and spin components are not in equilibrium and exhibit aJdependent ratio. The favored component of the A doublet corresponds to the pn lobe of the NO fragment lying predominantly perpendicular to the plane of rotation as it is expected from the symmetry properties of NO electronic charge distribution in the parent CHsONO 'Aa state. The results are consistent with an impulsive dissociation with fragments recoiling close to the initial molecuhu plane.

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