Browsing Abstracts of OSU International Symposium on Molecular Spectroscopy 2000-2009 by Issue Date
Now showing results 1-20 of 4203
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INFRARED SPECTROSCOPY OF HYDRATED NITROMETHANE ANIONS
Marcum, Jesse C.; Weber, J. Mathias ( 2009 )The hydration of molecular anions is still not as thoroughly explored as for atomic anions. We present IR spectra and quantum chemical calculations of hydrated nitromethane anions. In the monohydrate, the nitro group of ... -
A MICROWAVE INVESTIGATION OF THE CO$_2$-PYRIDINE VAN DER WAALS COMPLEX
Doran, J. L.; Hon, B. J.; Leopold, K. R. ( 2009 )Rotational spectra of the NC$_{4}$H$_{4}$-CO$_{2}$ dimer and four isotopologs have been observed using Fourier transform microwave spectroscopy. Analysis of the rotational and quadrupole coupling constants will be ... -
MEASUREMENTS OF PEROXY RADICALS USING CHEMICAL AMPLIFICATION/CAVITY RING-DOWN SPECTROSCOPY
Liu, Yingdi; Morales-Cueto, Rodrigo; Hargrove, James; Medina, David; Zhang, Jingsong ( 2009 )The peroxy radical chemical amplification (PERCA) method is combined with cavity ring-down spectroscopy (CRDS) to measure peroxy radicals HO$_2$ and RO$_2$. HO$_2$ and RO$_2$ are converted to NO$_2$ via reactions with NO, ... -
RECOVERY OF LEGACY PAPER SPECTRA AND NEW RESULTS ON THE ROTATIONAL SPECTRUM OF H$_2$O$\cdots$HF
Kisiel, Zbigniew; Tretyakov, Mikhail Yu.; Polyansky, Oleg L. ( 2009 )The situation when a spectrum exists only in the form of a paper record and contains valuable unprocessed information is not that rare. In the case of broadband spectra with a rich information content it is very desirable ... -
ROTATIONALLY RESOLVED ABSORPTION OF $O_2$ IN THE VISIBLE AT 90K
Perez-Delgado, Yasnahir; Manzanares, Carlos E. ( 2009 )The atmospheric red bands of molecular oxygen due to b$^1\sum_g^+$$\leftarrow$$X^3\sum_g^-$ magnetic dipole electronic transition have been obtained using the phase shift and pulsed cavity ring down technique. A low ... -
DIRECT INFRARED ABSORPTION SPECTROSCOPY OF BENZENE CLUSTERS
Chandrasekaran, Vijayanand; Biennier, L.; Georges, R.; Arunan, E.; Reddy, K. P. J. ( 2009 )In order to find out the global minimum structure of the benzene dimer we engaged in a series of low (0.5 cm-1) and high (0.015 cm-1) resolution direct absorption infrared measurements of benzene clusters in the 3.3 micron ... -
CHEMICAL PROBING SPECTROSCOPY OF H$_3^+$ IN A CRYOGENIC RADIOFREQUENCY TRAP
Kreckel, Holger; Bing, Dennis; Reinhardt, Sascha; Petrignani, Annemieke; Berg, Max; Wolf, Andreas ( 2009 )The H$_3^+$ molecular ion is a key species for the chemistry of the interstellar medium. Being the simplest polyatomic ion it also serves as a benchmark system for quantum chemistry calculations. Due to the absence of a ... -
ULTRAFAST STUDIES OF PHOTOISOMERIZATION REACTIONS
Dickson, Nicole M.; Donehue, Jessica E.; Gustafson, Terry L. ( 2009 )Photoisomerization reactions play an important role in biological processes and have potential use in molecular switches. We have recently shown that the photoisomerization reaction for 1,4-diphenyl-1,3-butadiene (DPB) ... -
ROTATIONAL SPECTRA AND STRUCTURE OF PHENYLACETYLENE-$H_2S$ COMPLEX
Goswami, Mausumi; Arunan, E. ( 2009 )Rotational Spectra of phenylacetylene-$H_2S$, phenylacetylene-$HDS$, phenylacetylene-$D_2S$, phenylacetylene-$H_2^{34}S$, $C_8H_5D-H_2S$ have been measured. The spectra were recorded using a Balle-Flygare type PNFT ... -
SHOCK FORMATION OF INITIAL MOLECULAR ICE MANTLES
Hassel, George E.; Herbst, Eric; Bergin, Edwin A. ( 2009 )We use a gas-grain chemical network to investigate the initial synthesis of molecular ices as a cold molecular cloud forms behind a shock in the diffuse interstellar medium. The reaction network includes newly measured ... -
ROTATIONAL SPECTRA OF ADRENALINE AND NORADRENALINE
Cortijo, V.; Lopez, J. C.; Alonso, J. L. ( 2009 )The emergence of Laser Ablation Molecular Beam Fourier Transform Microwave (LA-MB-FTMW) spectroscopy has rendered accessible the gas-phase study of solid biomolecules with high melting points. Among the biomolecules to ... -
TWO-PHOTON RESEONANT SECOND HARMONIC GENERATION IN ATOMIC XEON
Shi, Y. J.; Al-Basheer, W.; Thompson, R. I. ( 2009 )Vacuum ultraviolet (VUV) radiation at 124.8 nm (9.93 eV) was produced from two-photon resonant second harmonic generation (SHG) in a Xeon gaseous medium and used to probe molecular samples of acetone, furan, thiophene, ... -
PRESSURE BROADENING OF SEVERAL TERAHERTZ TRANSITIONS OF WATER FROM 20K TO 200K
Dick, Michael J.; Drouin, Brian J.; Pearson, John C. ( 2009 )The pressure broadening of the 0$_{00}$ to 1$_{11}$, 1$_{11}$ to 2$_{02}$, 3$_{03}$ to 3$_{12}$, 2$_{21}$ to 3$_{12}$ and 3$_{12}$ to 3$_{21}$ transitions of water by hydrogen and helium has been investigated using the ... -
FOURIER-TRANSFORM SPECTROSCOPY OF I$_2$ ($D$-$X$) EMISSION FOLLOWING OPTICAL-OPTICAL DOUBLE RESONANCE EXCITATION OF THE I$_2$ ($E$) STATE
Alekseev, Vadim A.; Ross, Amanda J. ( 2009 )The $E$ 0$^+_g$ ion-pair state of I$_2$ molecule may be excited by the optical-optical double resonance (OODR) via the valence state $B$ 0$^+_u$, I$_2$($X$ 0$^+_g$) + $hv_1$ $\rightarrow$ I$_2$ ($B$ 0$^+_u$ ) + ... -
PRELIMINARY WORK TO ALMA: SUBMILLIMETER WAVE SPECTROSCOPY OF $^{18}$O AND D SPECIES OF METHYL FORMATE
Margules, L.; Motiyenko, R.; Huet, T. R.; Llendal, H. Mo; Guillemin, J. C.; Demyk, K.; Carvajal, M.; Kleiner, I.; Coudert, L. H. ( 2009 )New radiotelescopes, working in the submillimeter range, will be operating in the next few years: ALMA, Herschel, and SOFIA. A large amount of laboratory work is required in order to account for the increased resolution ... -
DETECTION AND ANALYSIS OF ROTATIONALLY RESOLVED TORSIONAL SPLITTINGS IN PHENOL (C$_6$H$_5$OH): THE HIGH RESOLUTION FTIR SPECTRUM OF PHENOL BETWEEN 600 AND 1300 CM$^{-1}$
Albert, Sieghard; Quack, Martin ( 2009 )One of the great challenges of high resolution infrared spectroscopy is to understand the rovibrationally resolved spectra and dynamics of large molecules involving numerous degrees of freedom and large amplitude motions ... -
FOURIER TRANSFORM MICROWAVE SPECTROSCOPY AND MOLECULAR STRUCTURE OF THE 1,1-DIFLUOROETHYLENE--HF COMPLEX
Marshall, Mark D.; Leung, Helen O.; Drake, Tasha L.; Pudlik, Tadeusz; Savji, Nazir; McCune, Daniel W. ( 2009 )The rotational spectra of six isotopomers of 1,1-difluoroethylene--HF have been collected in the 7 - 22 GHz region with a Fourier transform microwave spectrometer. These include the most abundant isotopomer, its DF ... -
UPDATE FOR USERS OF THE METHANOL DATABASE: RECENT IMPROVEMENTS, REMAINING PROBLEMS, AND MORE COMPLICATED REGIONS
Xu, Li-Hong; Pearson, J. C.; Drouin, B. J.; Hougen, J. T. ( 2009 )Last year, we published a new global fit for normal methanol covering the first three torsional states ($v_t$ = 0, 1 and 2) for J values up to 30$^{[a]}$. The global fit of approximately 5600 frequency measurements and ... -
BROADBAND AND CAVITY SPECTROSCOPY OF THIOFULMINIC ACID HCNS AND THIOISOFULMINIC ACID HSNC, AND A SYSTEMATIC ASTRONOMICAL SEARCH FOR THE FOUR [H,C,N,S] ISOMERS IN SGR B2 WITH THE GREEN BANK TELESCOPE
McCarthy, M. C.; Gottlieb, C. A.; Thaddeus, P.; Muckle, M. T.; Neill, J. L.; Pate, B. H.; Thorwirth, Sven; Brunken, S.; Belloche, Arnaud; Verheyen, Lies; Menten, Karl M.; Remijan, Anthony J. ( 2009 )The rotational spectra of thiofulminic acid, HCNS, and isothiofulminic acid, HSNC, two energetic [H,C,N,S] isomers calculated to lie about 35 kcal/mol above HNCS, have been observed at high spectral resolution by a combination ... -
PROBING ROTATIONALLY EXCITED STATES OF CH$_{\mathrm{5}}^{\mathrm{+}}$ WITH DIFFUSION MONTE CARLO
Hinkle, Charlotte E.; McCoy, Anne B. ( 2009 )Protonated methane has long proven to be a challenging system for both experimentalists and theoreticians. The essentially flat potential surface comprised of 120 equivalent minima, coupled with a very fluxional molecule, ...