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Two-photon excitation of h2o and D2O with a KrF laser (248 nm): photofragment fluorescence from OH and OD(A2∑+)

✍ Scribed by C. Fotakis; C.B. McKendrick; R.J. Donovan

Publisher: Elsevier Science
Year: 1981
Tongue: English
Weight: 280 KB
Volume: 80
Category: Article
ISSN: 0009-2614
DOI: 10.1016/0009-2614(81)85086-5

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✦ Synopsis

Photofrngment fluorescence, from OH and OD(A 2Z++ X 'U), has been observed following two-photon excitation of Hz0 and D20 in the gas phase with a KrF laser (248 nmj The rotational band contour of the OH fluorescence is the same as that observed folIowing single-photon vacuum ultrawolet photolysis of Hz0 at 123.6 run.

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The state-selective energy transfer from two-photon excited Xe(6p) to Hz0 and the subsequent reaction has been studied by measurement of emission spectra of OH(A\*Z' +X \*II). The vibrational population ratios, N\_,/N,=,, are 0.52 +O.Ol in a free jet and 0.37 kO.02 in a bulb. This reveals the differ