Browsing Abstracts of OSU International Symposium on Molecular Spectroscopy 1990-1999 by Title
Now showing results 3144-3163 of 3912
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THE $S_{1} - S_{0}$ FLUORESCENCE EXCITATION SPECTRUM OF FORMIC ACID
Beaty, L. M.; Moule, D. C.; Judge, R. H.; Liu, H.; Lim, E. C. ( 1998 )The fluorescence excitation spectrum of formic acid monomer (HCOOH) has been recorded under jet-cooled conditions in the region, $268-257 nm$. A rotational analysis of the first four bands was used to establish the allowed ... -
THE $S_{1} \leftarrow S_{0}$ FLUORESCENCE EXCITATION SPECTRA OF ANISOLE AND STYRENE UING HIGH RESOLUTION TECHNIQUES
Ribblett, Jason W.; Pratt, D. W. ( 1997 )Anisole (methoxybenzene) and styrene (vinylbenzene) are similar chemical species. However, their electronic strucures are very different. In this report, we describe the rotationally resolved fluorescence excitation spectra ... -
$S_{1} \leftarrow S_{0}$ TRANSITION MOMENT ORIENTATIONS IN SUBSTITUTED $BENZENES^{1}$
Ribblett, Jason W.; Pfanstiel, J. F.; Pratt, D. W.; Hepworth, P. A.; McCombie, June; Simons, John P. ( 1995 )Rotationally resolved fluorescence excitation spectra of the origin bands in the $S_{1} \leftarrow S_{0}$ transitions of each of the four conformers of methyl-3-hydroxybenzoate and its deuterated isotopomer have been ... -
$S_{1}-S_{0}$ TRANSITION MOMENT ORIENTATIONS IN AROMATIC $ETHERS^{*}$
Ribblett, Jason W.; Pratt, D. W. ( 1996 )Rotationally resolved fluorescence excitation spectra of the four origin bands that appear in the $S_{1}-S_{0}$ electronic transition of methyl -3-methoxybenzoate have been obtained and analyzed. The four origins have ... -
$S_{2} - S_{0}$ FLUOORESCENCE, MOLECULAR STRUCTRRE, AN INITIO CALCULATIONS, AND QUKANTUM BEAT SPECTROSCOPY OF SILYLIDENE $(H_{2}C=Si)$
Harper, Warren W.; Waddell, Kevin W.; Hilliard, Randall K.; Grev, Roger S.; Clouthier, Dennis J. ( 1997 )Strong $S_{2}-S_{0}$ fluorescence has been observed in LIF spectra of jet-cooled silylidene, $H_{2}C=Si$, produced by fragmentation of tetramethylsilane in a pulsed discharge jet. The experimental ground and excited state ... -
SATELLITE BANDS OF K, Rb AND Cs RESONANT LINES AS FRANCK-CONDON WNDOWS TO INTERMEDIATE LONG-RANGE MOLECULES
Vea, D.; Beuc, R.; Miloevi, S.; Pichler, G. ( 1998 )Very far quasi-static wings of self-broadened first resonance lines of potassium(1) rubidium (2) and cesium (3) are rich in different types of satellite bands that stem from various avoided crossings. Detailed experimental ... -
THE SEARCH FOR CHARGE TRANSFER STATES: BENZONITRILE AND RELATED MOLECULES
Borst, David R.; Pratt, D. W. ( 1998 )The high resolution electronic spectra of benzonitrile and related molecules have been recorded, including several higher vibronic bands in the $S_{1} \leftarrow S_{0}$ system. Analyses of the spectra provide information ... -
THE SEARCH FOR PROTONATED WATER CLUSTERS: THZ LASER SPECTRUM OF A PULSED SUPERSONIC SLIT DISCHARGE: $D_{2}O^{+}, D_{3}O^{+}$, OD
Michael, E.; Keoshian, C.; Anderson, S.; Saykally, R. J.; Brown, J. M. ( 1999 )Protonated water clusters have been the focus of theoretical interest for two decades, but few results on their spectra have been reported so $far^{a}$. Research on neutral water clusters in the last few years has shown ... -
THE SEARCH FOR PURE CARBON CLUSTERS IN THE INTERSTELLAR MEDIUM: DETECTION OF THE $C_{3}$ MOLECULE IN SGR B2
Provencal, R. A.; Van Orden, A.; Cruzan, J. D.; Saykally, R. J.; Boreiko, R. T.; Betz, A. L. ( 1995 )Because of the lack of a permanent dipole moment, detection of pure carbon clusters in the interstellar medium by conventional microwave astronomy is unlikely. The best vehicle for the detection of these molecules in cold ... -
SECOND HARMONIC GENERATION ON DISPERSE $SiO_{2}$ SURFACE WITH ADSORBED MOLECULAR ANIONS ${CrO_{4}}^{2-}$
Naumenko, Sergej N. ( 1995 )Second harmonic generation (SHG) has been used for structural and phase diagnosties of such a complex heterogeneous system as disperse $SiO_{2}$ surface modified with molecular ions ${CrO_{4}}^{2-}$ (MI) for the first time. ... -
SECOND ORDER DETERMINATION OF THE VIBRATIONAL POTENTIAL OF $CO_{2}$ USING EFFECTIVE NORMAL COORDINATED
Amat, Gilbert; Salah, L. M.; Balloomal, L. S. ( 1992 )Due to the large value of the coefficient $k_{133}$ appearing in the cubic potential, the perturbation calculation of energy levels of $co_{2}$ exhibits a good $convergence^{1}$ only for very small values of the quantum ... -
SELECTIVE AND TIME-RESOLVED FOURIER TRANSFORM ION SPECTRA.
Picqué, Nathalie; Guelachvili, G. ( 1999 )This paper illustrates some aspects of the work begun at LPPM in the field of Fourier Transform Ion Spectroscopy. Double-modulation and time-resolved emission FT spectra of molecular ions, created in glow discharges, are ... -
SELECTIVE LASER SPECTROSCOPY OF MOLECULAR IONS $UO_{2}{^{2+}}$ ADSORBED ON DISPERSE $SiO_{2}$ SURFACE
Glinka, Yu. D.; Krak, T. B. ( 1994 )Low-temperature luminescence spectra of molecular ions $UO_{2}{^{2+}}$ adsorbed on disperse $SiO_{2}$ surface investigated under selective laser excitation. It was determined that molecular ions are very sensitive luminescent ... -
SELENOFORMALDEHYDE: A ROTATIONAL ANALYSIS OF THE $A^{1}A_{2} - \bar{X}^{1}A_{1} 735 nm$ BAND SYSTEM OF H2C78 Se and $H_{2}C^{78}Se, H_{2}C^{80}Se$, and $D_{2}C^{80}Se$ FROM HIGH RESOLUTION LASER FLUORESCENCE EXCITATION SPECTRA
Clouthier, Dennis J.; Judge, R. H.; Moule, D. C.; Joo, D.- L. ( 1990 )High resolution laser fluorescence excitation spectra of vibronic bands in the $A^{1}A_{2} - \tilde{X}^{1}A_{1}$ system of selenoformaldehyde have been observed with Doppler-limited resolution. The results of the rotational ... -
SELF, $N_{2}, O_{2}, H_{2}, Ar$ AND He BROADENING IN THE $\nu_{1}$ BAND OF $NH_{3+}$
Pine, A. S.; Markov, Vladimir N.; Buffa, G.; Tarrini, O. ( 1993 )Self-, $N_{2}-, O_{2}-, H_{2}-, Ar-$ and He-broadening coefficients, pressure shifts and integrated intensities have been measured for R- and Q-branch transitions in the $\nu_{1}$ fundamental band of ammonia using a ... -
SELF- AND AIR-BROADENING AND SHIFT COEFFICIENTS OF $CH_{4}$ LINES IN THE $3 \mu$m REGION
Devi, V. Malathy; Benner, D. Chris; Smith, M. A. H.; Rinsland, C. P.; Guelachvili, G.; Brown, L. R. ( 1998 )Self- and air-broadening and shift coefficients for numerous $CH_{4}$ transitions in the $3 \mu$m region have been determined through analysis of high-resolution absorption spectra recorded by two different Fourier transform ... -
SELF- AND FOREIGN GAS BROADENING IN THE $\nu_{1}+\nu_{3}$ BAND OF $SO_{2}^{*}$
Sumpf, B.; Rehle, D.; Kronfeldt, H.- D.; Lazarev, V. V. ( 1996 )Experimental resuIts concerning the self-broadening of about 100 lines in the $\nu_{1}+\nu_{3}$ band of $SO_{2}$ near 2499$cm^{-1}$ will be presented. The experiments were carried out with a tunable diode laser spectrometer ... -
SELF-, $N_{2}^{-}$, $O_{2}^{-}$, $H_{2}^{-}$, $Ar^{-}$ AND He-BROADENING IN THE $\nu_{3}$ BAND Q BRACH OF $CH_{4}$
Pine, A. S. ( 1992 )SELF-, $N_{2}^{-}$, $O_{2}^{-}$, $H_{2}^{-}$, $Ar^{-}$ and He-broadening coefficients, pressure shifts and intergrated intensities have been measured for most transitions in the Q branch of the $\nu_{3}$ fundamental band ... -
SELF-BROADENING AND LINE-MIXING IN HGN Q BRANGHES
Pine, A. S.; Looney, J. P. ( 1991 )The Q branches of the $v_{1} + v_{2}$ (4004 $cm^{-1})$ and $v_{1} + v_{2}$ (2806 $cm^{-1})$ combination bands and the $v_{1} -v_{2}$ (2599 $cm^{1})$ difference hot band of HCN have been recorded at pressures from 1 to 400 ... -
SELF-BROADENING AND SELF-SHIFT COEFFICIENTS IN THE 1-0 BAND OF $^{12}C_{16}O$
Benner, D. Chris; Devi, V. Malathy; Smith, M. A. H.; Rinsland, C. P. ( 1997 )High quality and precise pressure broadening and pressure-induced shift coefficients of self-broadened CO covering the p(31) to R(31) transitions in the spectral region between 2008 and $2248 cm^{-1}$ of the fundamental ...