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Lifetimes of C-2 in rotational levels of the B̃2Σ+u state in the gas phase

✍ Scribed by Samuel Leutwyler; John P. Maier; Liubomir Misev

Publisher
Elsevier Science
Year
1982
Tongue
English
Weight
250 KB
Volume
91
Category
Article
ISSN
0009-2614

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✦ Synopsis

Llteumcs OTC; m rotational levels of the E':i. d = 0, acet) Icnc and r~regas merastablcs and the 6'~: -%kg u' = I states have been measured. Cl was produced from bromotransltion uas laser excited The hfetlmes are constant wthm a vlbrdttonal level, 77 * 8 ns for u' = 0 and 73 r 7 ns for v = I. The oscdlator s!rength&, = 0.044 5 0.004.

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We measure the fluorescence decays for low-lying rotational states in the first eight vibrational levels of HCO B 2.aL Some long-lived decays exhibit weak quantum beats that we attribute to a higher-order hyperfine perturbation in the 13 state. We estimate fluorescence quantum yields by combining me

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Using the single-photon time correlation sxtetf'od, we have determined the lifetime of the Sz (B 3X3) state from the decay rate of the fluorescence at 370 nm. A lifetime of 45.0 t 0.6 n5 was measured, and the cross section for fluorescence quenching by Sz as found to be 8J -3 t 4.7 A\*. A slight dep

Comment on “Lifetimes of vibrational lev
Comment on “Lifetimes of vibrational levels in the B̃ 2A′ state of HCO”
✍ H. Bitto; Robert T. Carter 📂 Article 📅 1996 🏛 Elsevier Science 🌐 English ⚖ 131 KB

Arguments are put forward that the quantum beats in the B 2~ electronic state of HCO attributed to a higher-order hyperfine perturbation by Tobiason and Rohlfing are most likely due to well-known hyperfine quantum beats. In contrast to Tobiason and Rohlfing's interpretation, hyperfine perturbations

Reply to the comment on “Lifetimes of vi
Reply to the comment on “Lifetimes of vibrational levels in the B̃ 2A′ state of HCO”
✍ Joseph D. Tobiason; Eric A. Rohlfing 📂 Article 📅 1996 🏛 Elsevier Science 🌐 English ⚖ 110 KB

The preceding Comment by Bitto and Carter objects to our interpretation of the weak quantum beats observed for particular rovibrational states of B 2K HCO in the title article and postulates that the observed beats are anisotropic hyperfine quantum beats. We concur with their Comment, acknowledge th