𝔖 Bobbio Scriptorium
✦   LIBER   ✦

Fluorescence Excitation Spectra of HCO B̃̃2A′−X̃2A′ in a Supersonic Jet

✍ Scribed by Y.J. Shiu; I.C. Chen

Publisher
Elsevier Science
Year
1994
Tongue
English
Weight
350 KB
Volume
165
Category
Article
ISSN
0022-2852

No coin nor oath required. For personal study only.

✦ Synopsis

The HCO radical was produced by photolysis of acetaldehyde in a supersonic molecular jet. HCO (\hat{B}^{2} A^{\prime}-\tilde{X}^{2} A^{\prime}) transitions were detected by laser-induced fluorescence. Eight vibronic bands were observed that showed both (a) - and (b)-type transitions, indicating that the observed transitions are from the (\dot{B}) state, not the (\dot{C}) state. The quantum yield of fluorescence abruptly decreased at lines (\sim 2770 \mathrm{~cm}^{-1}) above the zero vibrational state of (\tilde{B}), indicating the onset of a channel leading to predissociation. Rotational spectra of the lowest six vibrational levels of the (\dot{B}) state are analyzed. (ci) 1994 Academic Press. Inc.

📜 SIMILAR VOLUMES

Laser Induced Excitation Spectra of the
Laser Induced Excitation Spectra of the Cations of Some Fluoro-substituted Phenols (B̃2 A″ ↔ X̃2 A″) in the Gaseous Phase
✍ J. P. Maier; L. Misev; R. H. Shiley 📂 Article 📅 1980 🏛 John Wiley and Sons 🌐 German ⚖ 313 KB 👁 1 views

## Abstract Excitation spectra of the cations of pentafluorophenol, 2,3,4‐trifluorophenol, 2,4,5‐trifluorophenol, 2,5‐difluorophenol and 3,5‐difluorophenol have been obtained by pumping the B̃^2^ A″ ← X̃^2^A″ transition with a dye laser. The cations were first produced in their ground states by __P

Laser Excitation Spectroscopy of theB̃2A
Laser Excitation Spectroscopy of theB̃2A1–X̃2A1Transition of the CaOCH3Radical
✍ C.J. Whitham; S.A. Beaton; Y. Ito; J.M. Brown 📂 Article 📅 1998 🏛 Elsevier Science 🌐 English ⚖ 237 KB

The (0 -0) band of the B ˜2A 1 -X ˜2A 1 transition of CaOCH 3 at 565 nm has been recorded and analyzed at Doppler limited resolution (FWHM ϭ 0.005 cm Ϫ1 ). The molecule was generated using a laser ablation/molecular beam source in which a solid calcium rod was ablated and a mixture of argon seeded w