Browsing Abstracts of OSU International Symposium on Molecular Spectroscopy 1990-1999 by Title
Now showing results 1968-1987 of 3912
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M-DEGENERACY, FABRY-PEROT RESONATOR E-FIELD INHOMOGENEITY, SUPERSONIC BEAM EXPANSION AND THEIR EFFECTS ON MICROWAVE TRANSIENT PHEMOMENA
Grabow, Jens-Uwe ( 1998 )The re-birth of time domain microwave spectroscopy as a pulse technique in a waveguide $application^{a}$ in 1974 led to the theoretical discussion of microwave transient $phenomena^{b}$. Later the technique was combined ... -
M-RESOLVED COLLISION-INDUCED ROTATIONAL ENERGY / ALIGNMENT TRANSFER IN $CH_{4}$
Coy, Stephen L.; Klaassen, Jody J.; Steinfeld, J. I. ( 1996 )Experiments vary widely in their sensitivity to molecular space-fixed orientation. Fluorescence, absorption, raman, double resonance, and other techniques each have distinct dependencies on the M quantum number, and reactive ... -
MACRO-RANDOM MODEL OF A VIBRATIONAL BAND STRUCTURE
Surzhikov, S. ( 1997 )The problem of calculation of selective radiative heat transfer in gas volumes, containing such optically active components as $CO_{2},H_{2}O, CH_{4}, $CO demands development of effective economic methods, allowing to ... -
MAGNETIC FIELD TUNING OF THE $NO_{2}$ PHOTODISSOCIATION THRESHOLD
Jost, R.; Delon, A.; Nygard, Jesper; Pasinski, Adam ( 1996 )The lowest photodissociation threshold of $NO_{2}$, located at 25128.57$\times$$0.05 cm^{-1}$, is now well characterized: below the threshold, the highly excited vibronic levels of $NO_{2}$, observed by LIF in a jet, have ... -
MAGNETIC INEQUIVALENCY AND ELECTRON PARAMAGNETIC RESONANCE OF THE 4,5-{bis} (TRIFLUOROMETHY)-1,3,2-DITHIAZOL-2-YL RADICAL
Mattar, Saba M. ( 1997 )The two $CF_{3}$ groups of the neutral 4,5-bis(trifluoromethy)-1,3,2-dithiazolyl radical are large enough to inhibit free rotation along their C-C axes. The energy barrier due to these rotations is $\approx 60$ kcal/mol. ... -
MAGNETIC MOLECULES IN MATRICES
Weltner, W., Jr.; Van Zee, R. J. ( 1997 )Magneto-infrared and electron-skip-resonance (ESR) spectroscopies have been applied to trapped molecules and ions hin rare-gas matrices. Topics to be discussed may include zero-field $splittings,^{a}$ quenching of orbital ... -
MAGNETIC MOMENTS AND LIFETIMES OF INDIVIDUAL ROTATIONAL LEVELS OF $V ^{1}B_{2} CS_{2}$
Warnaar, D.; Silvers, S. J. ( 1990 )Lifetimes and magnetic moments of individual rotational levels of the $V ^{1}B_{2}$ state of $CS_{2}$ are reported. Rotational states from a number of vibrational leves are studied. The measurements are carried out in a ... -
THE MAGNETIC ROTATION SPECTRUM OF $^{79}Br_{2}$ (A $^{3}\Pi_{1u}$ -- $X^{1}\Sigma_{g}^{+})$
Chanda, A.; Dalby, F. W.; Ozier, I.; Sanders, J. ( 1991 )We have investigated the resonant Magnetic Rotation Spectrum of the weak A $^{3}\Pi_{1u} - $X $^{1}\Sigma_{g}^{+}$ electronic band of isotopically pure $^{79}Br_{2}$. With absorption $techniques^{1}$, overlap with the very ... -
MAGNETIC ROTATION STUDY OF THE $A^{3}\Pi_{1 u}-X^{1}\Sigma_{g}^{+}$ SYSTEM OF $^{79}Br_{2}$
Boone, Chris; Chanda, A.; Dalby, F. W.; Ozier, I. ( 1999 )The magnetic rotation spectrum of $^{79}Br_{2}$ has been measured from 14,988 to $15,488 cm^{-1}$ using a tunable, cw dye laser (effective linewidth $\sim 2$ MHz) with DCM dye. The study was carried out using a cell filled ... -
MAGNETO-IR SPECTRA OF MATRIX-ISOLATED NiH AND $NiH_{2}$ MOLECULES AND THEORETICAL CALCULATIONS OF THE LOWEST ELECTRONIC STATES OF $NiH_{2}$
Li, S.; Van Zee, R. J.; Weltner, W., Jr.; Cory, M. G.; Zerner, M. C. ( 1996 )Two $\Omega=3/2 \leftarrow 5/2$ transitions ($923,2560 cm^{-1}$) were observed for NiH in solid argon krypton at 4 K; both were shifted and broadened by magnatic fields of up to 4 T. Brands in the $1300-2000 cm^{-1}$ ... -
MAGNETOOPTICAL SPECTROSCOPY OF THE Q TRANSITION OF ZINC TETRABENZOPORPHYRIN ISOLATED IN AN ARGON MATRIX.
Williamson, B. E.; Koralewski, M.; Metcalf, D. H.; Vancott, T. C.; Schatz, P. N. ( 1992 )Absorption, fluorescence, magnetic circular dichroism (MCD), magnetic circularly polarized luminscence (MCPL) and longitudinal Zeeman spectra were measured for the $Q(^{1}A^{1}_{g}(\pi)) \rightarrow ^{1}E_{u}(\pi^{*}e)$ ... -
Many Body Potentials of an Open Shell Atom: Spectroscopy of Spin-Orbit Transitions of Iodine in Crystalline Xe and Kr.
Lawrence, W. G.; Apkarian, V. A. ( 1994 )Emission spectra of spin excited iodine in a crystalline Xe at 15 K, 35 K and 110 K are presented and analyzed in terms of anisotropic pair interactions. In the octahedral rapping site, the atomic $^{2}P$ iodine states ... -
THE MANY-LINE SPECTRA OF OH AND DO NEAR 1850 {\AA}.
Coxon, John A.; Holland, F.; Huber, K. P. ( 1991 )We have observed the complex VUV spectra of OH and OD near 1850 {\AA}$^{1}$ in emission from a corona discharge through supersonically expanding mixtures of $H_{2}O$ or $D_{2}O$ with He or Ar. The emission is particularly ... -
MASER EMISSION FROM AN AMMONIA INVERSION TRANSITION THROUGH COLLISIONAL COOLING
Willey, D. R.; Southwick, R. J.; Ramadas, K.; Rapela, B. K.; Neff, W. A. ( 1995 )We have observed stimulated emission from the J = 4, K = 3 inversion transition of ammonia $(^{14}NH_{3})$ as it was cooled by collisions with cold He atoms in a low temperature cell. Maser emission was observed for cell ... -
MASS RESOLVED HOLE BURNING SPECTROSCOPY OF PHENOL $(H_{2}O)_{2-5}$ CLUSTERS AND ITS DEUTERATED ISOTOPOMERS: STRUCTURES AND INTERMOLECULAR VIBRATIONS IN THE $S_{1}$ - STATE
Jacoby, Christoph; Schmitt, Michael; Roth, Wolfgang; Kleinermanns, Karl ( 1997 )Resonant two photon ionization spectra (R2PI) of hydrogen bonded Phenol-water clusters up to 10 $H_{2}O$ were obtained in a supersonic jet expansion with ion detection via a special highly sensitive time of flight mass ... -
MASS SPECTROMETRIC AND MATRIX ISOLATION STUDIES OF THE VAPORIZATION OF DYSPROSIUM HALIDES
Feltrin, A.; Guido, M.; Nunziante Cesaro, S. ( 1992 )A work is in progress on dysprosium halides starting from $DyF_{3}$, for which no spectroscopic data are available in the literature. A combination of mass spectrometry and far IR matrix isolation technique is used to ... -
MATRIX INFRARED AND UV-VIS. STUDY OF REACTION BETWEEN Mg AND $CH_{3}$; X = Br,CL
Solov'ev, V. N.; Nemukhin, A. V.; Sergeev, G. B. ( 1996 )An attempt was made to detect directly mono- and bi- magnesium unsolvated Grignard reagents of type $CH_{3}MgX$ and $CH_{3}MgMgX$. As the base for our experiments we used recent theoretical predictions of thermodynamical ... -
MATRIX INFRARED SPECTRA OF EARLY THIRD-ROW TRANSITION METAL NITRIDE MOLECULES AS A PREDICTOR OF GAS PHASE FREQUENCIES
Andrews, Lester; Bare, William D.; Chertihin, George V.; Kushto, Gary P.; Souter, P. F.; Zhou, Mingfei ( 1998 )Laser ablated transition metal atoms are sufficiently energetic to dissociate molecular $N_{2}$ on cocondensation such that the MN molecules can be formed and trapped in excess argon or nitrogen at 10 K. The MN molecules ... -
MATRIX INFRARED SPECTRA OF LANTHANIDE MONOMITRIDES (Ln=Ce, Pr, Nd, Sm, Eu, Gd, Tb, Dy)
Willson, Stephen P.; Andrews, Lester ( 1998 )Recent work in our laboratory has included a systematic study of the products of reaction of several of the lanthanide metals with molecular nitrogen, as observed in argon and nitrogen matrices at 6-7 K. One such product, ... -
MATRIX ISOLATION OF EXCITED METASTABLE ATOMS AND ENERGY TRANSFER IN NOBLE-GAS CRYOCRYSTALS
Zhitntkov, R. A.; Dmitriev, Yu. A. ( 1993 )The original experimental technique and setup have been developed which makes it possible to detect and study by $ESR^{1,2}$ local unstable excited states in noble-gas cryocrystals. Very recently, we have discovered by ESR ...