Browsing Abstracts of OSU International Symposium on Molecular Spectroscopy 1990-1999 by Title
Now showing results 1810-1829 of 3912
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LASER INDUCED EMISSION SPECTROSCOPY OF CARBON CLUSTERS IN SOLID ARGON
Cermak, Ivo; Forderer, Markus; Kalhofer, Stefan; Cermakova, Iva; Krätschmer, Wolfgang ( 1998 )Carbon-vapor molecules $(C_{1} - C_{3})$ produced by evaporation of graphite in vacuum were embedded in argon matrices where larger clusters were built in chemical reactions induced by controlled annealing. For identification ... -
LASER INDUCED FLUORESCENCE (LIF) EXCITATION AND DISPERSED FLUORESCENCE SPECTRA OF $CF_{3}O$ AND $CF_{3}S$: VIBRATIONAL ASSIGNMENTS FOR THE $\tilde{A} \leftrightarrow \tilde{X}$ TRANSITION.
Yang, Min-Chieh; Powers, David E.; Miller, Terry A. ( 1995 )The LIF excitation and dispersed fluorescence spectra, as well as lifetimes for many of the excited state vibrations, for the $\tilde{A}^{2}A_{1} \leftrightarrow \tilde{X}^{2}E$ electronic transitions of $CF_{3}O$ and ... -
LASER INDUCED FLUORESCENCE (LIF) EXCITATION AND DISPERSED FLUORESCENCE SPECTRA OF MgNC.
Powers, David E.; Pushkarsky, Michael B.; Miller, Terry A. ( 1995 )The LIF excitation and dispersed fluorescence spectra for the $\tilde{A}^{2}\Pi \leftrightarrow \tilde{X}^{2}\Sigma$ electronic transitions of MgNC have been recorded. The molecule was formed by laser ablation of magnesium ... -
LASER INDUCED FLUORESCENCE AND BEAM DEPLETION SPECTROSCOPY OF K ATOMS ATTACHED TO LARGE HYDROGEN CLUSTERS
Callegari, C.; Higgins, J.; Stienkemeier, F.; Scoles, G. ( 1996 )Hydrogen clusters are produced in a supersonic expansion and are subsequently doped with K atoms by passing the beam through a pick-up cell conntaining K vapour at a pressure of about $10^{-2}$ Pa. Optical $4^{2}P_{\frac ... -
LASER INDUCED FLUORESCENCE AND LIFETIME MEASUREMENTS OF ORGANIC RADICALS
Williams, S. A.; Zingher, E.; Weisshaar, J. C. ( 1997 )Different isomers of vinoxy radical were produced in a pulsed supersonic expansion by excimer laser photolysis at 193nm. The $\tilde{B}$ to $\tilde{X}$ electronic transitions were probed by laser induced fluorescence. The ... -
LASER INDUCED FLUORESCENCE AND STIMULATED EMISSION PUMPING OF $CD_{2}$
Xie, W.; Dai, H. L. ( 1991 )Laser Induced Fluorescence (LIF) and Stimulated Emission Pumping (SEP) are used to characterize the $CD_{2}$ $\bar{a}^{1}A_{1} \longleftrightarrow \bar{b}^{\prime}B_{1}$ rovibronic transitions. $CD_{2}$ is generated from ... -
LASER INDUCED FLUORESCENCE AND ZEEMAN QUANTUM BEAT SPECTROSCOPY OF ELECTRONICALLY EXCITED ACETYLENE AND ITS D-SUBSTITUENTS IN SUPERSONIC JETS
Ochi, N.; Ikeda, N.; Tsuchiya, S. ( 1990 )Laser-induced fluorescence(LIF) spectra of $C_{2}H_{2}, C_{2}D_{2}$, and $C_{2}HD$ were measured with $0.05 cm^{-1}$ resolution to assign respective rovibronic levels in the $^{1}\Sigma_{u}$ state. In $C_{2}H_{2}$, the ... -
LASER INDUCED FLUORESCENCE EXCITATION SPECTRA OF THE ELECTRONICBAND SYSTEMS OF ALKYLTHIO $RADICALS^{a}$
Haridass, C.; Kamal, M.; Misra, P. ( 1997 )Alkylthio radicals $(RS, R=CH_{3}, C_{2}H_{5}$, andi-$C_{3}H_{7}$) are involved in the chemistry of sulfur-rich fuels. These radicals were produced by excimer laser photolysis of therecursor dialkyl disulphide $(R_{2}S_{2})$. ... -
LASER INDUCED FLUORESCENCE OF RADICAL SPECIES PRODUCED IN A PULSED DISCHARGE AND COOLED BY SUPERSONIC EXPANSION
Tsay, Shang-Jih; Miller, Terry A.; Bondybey, V. E. ( 1990 )The temperature of radicals produced in a discharge can be greater than 1000 C. In the present study, a supersonic expansion technique is used to lower the temperature of the radical species-CN, $C_{2}$ and OH produced in ... -
LASER INDUCED FLUORESCENCE SPECTOSCOPY OF JET-COOLED AlNC AND AlCN
Fukushima, Masaru ( 1999 )The rotationally resolved laser induced fluorescence spectra for the ${^{1}}A^{\prime} - \widetilde{X} {^{1}}\Sigma^{+}$ electronic transition of AlNC and AlCN were measured in supersonic free expansions. The radicals were ... -
LASER INDUCED FLUORESCENCE SPECTROSCOPY OF $Rg \cdot SH$ COMPLEXES $(Rg = Ne, Ar$ and Kr)
Yang, Min-Chieh; Salzberg, Aldo P.; Carter, Christopher C.; Miller, Terry A. ( 1993 )For the first time, the jet-cooled, laser induced fluorescence spectra of $\tilde{A} - \tilde{X}$ transitions of $Rg \cdot SH$ complexes were observed. In $Ne \cdot SH$, six bands were recorded and we believe most are ... -
LASER INDUCED FLUORESCENCE SPECTROSCOPY OF ALINEAR CARBON CHAIN MOLECULE, $C_{3}N$
Hoshina, K.; Endo, Yasuki ( 1997 )Laser induced fluorescence spectra of a linear carbon chain molecule, $C_{3}N$, were observed in near UV region for the first time. The radical was produced in a supersonic jet by discharging $HC_{3}N$ diluted in Ar using ... -
LASER INDUCED FLUORESCENCE SPECTROSCOPY OF JET-COOLED IRON MONOCARBIDE: A ${^{3}}\Delta_{1} \leftarrow {^{3}}\Delta_{1}$ TRANSITION NEAR 493nm
Balfour, W. J.; Cao, J.; Prasad, C. V. V.; Qian, C. X. W. ( 1995 )We report laser induced fluorescence (LIF) spectroscopy of iron monocarbide $(Fe^{12}C, Fe^{13}C)$. To our knowledge, this is the first report of gas phase data on this 3d transition metal monocarbide. FeC was generated ... -
LASER INDUCED FLUORESCENCE SPECTROSCOPY OF Mg OLIGOMERS ATTACHED TO LARGE HELIUM CLUSTERS
Radcliff, Matthew R.; Higgins, J.; Reho, J.; Lehmann, K. K.; Scoles, G. ( 1998 )Recently we have conducted a series of experiments on the spectroscopy of alkali oligomers attached to large He clusters obtaining novel information on two and three body intermolecular forces in the high spin states of ... -
LASER INDUCED FLUORESCENCE SPECTROSCOPY OF THE $C_{4}H$ AND $C_{4}D$ RADICALS
Hoshina, K.; Kohguchi, H.; Endo, Yasuki; Ohshima, Yasuhiro ( 1996 )Laser-induced-fluorescence spectra of the $C_{4}H$ and $C_{4}D$ radicals have been observed for the first time. The molecules were generated in a supersonic jet by an electric discharge of $C_{2}H_{2}$ or $C_{2}D_{2}$ ... -
LASER INDUCED FLUORESCENCE SPECTROSCOPY OF THE KETENYL RADICAL
Brock, L. R.; Rohlfing, Eric A.; Mischler, B. ( 1999 )The ketenyl radical, HCCO, is widely recognized as a critical reaction intermediate in hydrocarbon combustion. In order to enable laser-based diagnostics of ketenyl in combustion and kinetics environments, we have examined ... -
LASER INDUCED FLUORESCENCE SPECTRUM OF B1F (A-X)
Bohn, Matthew; Berst, Chris; Dorko, Ernest A. ( 1991 )A flow tube apparatus employing a high energy discharge has recently been fabricated to allow the production and observation of thermodynamically unstable materials. A high voltage discharge has been passed through a mixture ... -
LASER INDUCED FLUORESCENCE SPECTRUM OF PERYLENE IN LARGE HELIUM CLUSTERS
Radcliff, Matthew R.; Higgins, J.; Reho, J.; Lehmann, K. K.; Scoles, G. ( 1998 )Helium Cluster Isolation Spectroscopy as a method of investigating molecular aggregates offers the advantages of extremely low temperatures (0.37 K), control of aggregation, and very weak solvent perturbation effects. ... -
LASER INDUCED FLUORESCENCE SPECTRUM OF THE $A^{2}-X^{2}\Sigma$ TRANSITION OF ZrN,
Chan, C. M.- T.; Li, Haiyang; Cheung, A. S.- C. ( 1996 )The $A^{2}-X^{2}\Sigma$ transition of ZrN between 5631 and 5879 \AA has been studdied using laser induced fluorescence spectroscopy. ZrN was produced by reacting vaporized $ZrCl_{4}$ with microwave discharged $N_{2}$ gas. ... -
LASER INDUCED FLUORESCENCE STUDIES OF JET-COOLED $CF_{2}$: DETERMINATION OF $\tilde{A}$-STATE STRETCHING FREQUENCIES
Wang, Chuji; Chen, Congxiang; Dai, Jinghua; Ma, Xingxiao ( 1998 )Laser induced fluorescence (LIF) excitation spectra of $CF_{2} \tilde{A}^{1} B_{1} \leftarrow \tilde{X}^{1} A_{1}$ system around 250 nm has been measured under supersonic free-jet conditions. $CF_{2}$ radical was produced ...