A pulsed, tunable dye laser has been used to escite the O-O band of cis~glyoxal near 4875 A, at pressures from 30 to I50 mtorr, Fluorescence was resolved through a spectrometer and lifetines measured. Rate constants for the quenching of the vibrationless levels of the first excited singlet states of
Time-resolved fluorescence from the 1Au state of glyoxal
β Scribed by J.T. Yardley; G.W. Holleman; J.I. Steinfeld
- Publisher
- Elsevier Science
- Year
- 1971
- Tongue
- English
- Weight
- 307 KB
- Volume
- 10
- Category
- Article
- ISSN
- 0009-2614
No coin nor oath required. For personal study only.
β¦ Synopsis
tonable, dye lasers have been used to measure ciirectly the lifetime of the 'A, state of low pres-sLL'e glyoxalvapok A cohision-free Iifetirne of (2.16 :f 0.05) psec is obtained. Quenching as the result of molecular collisions with a variety of buffer gases is also studied, and quenching rate constants determined from Stern-Vobner plots are reported. Under low resolution'the collision-free Lifetime of glyoxal appears to be independent of wavelength over the range 45 10 A to 4585 A.
π SIMILAR VOLUMES
Energy transfer from rotatlonnl levels (K' from 9 to 12) of vtbratlonless S 1 (t AU) glyoxal has been studled wth SO glyowl or CO as D colhson partner The expenments do not show any dlstxnct propensity for spcclfic qu;lnrum humps AK'; sm;lU 1s well as large changes of K' have been observed Electromc
ChanSes of the rotaticnal quantum state occurring simultancousi~ (in one arr~k collision step) Edith the deactivation of \_ the torsional vibration ~7 ha%e been measured in $1 OUI IA,. Selscthe ewirarron of rotational Ie\eIs in the vibronic MeI 7' 85s accomplished by means of ;I tunable d> e laser.
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