Browsing Abstracts of OSU International Symposium on Molecular Spectroscopy 19601969 by Issue Date
Now showing results 120 of 1956

DOUBLE BEAM METHODS FOR FARINFRARED FOURIER ABSORPTION SPECTROSCOPY AND REFRACTOMETRY
Thorpe, L. W.; Milward, R. C.; Hayward, G. C.; Yewen, J. D. ( 1969 )This communication will describe a farinfrared inteferometric Fourier spectrometer system which has been developed to operate in a ``double beam'' mode of scanning interferograms, in an effort to overcome the limitations ... 
COMPLEX NUMBER COMPUTATION FOR INFRARED FOURIER TRANSFORM SPECTROSCOPY.
Thorpe, L. W. ( 1969 )The correction of "phase errors" existing in interferogram traces obtained from practical farinfrared interferometric Fourier spectrometers will be discussed and demonstrated. The use of a ``fast'' Fourier transform ... 
A COMPARISON BETWEEN FOURIER TRANSFORM SPECTROSCOPY AND CONVENTIONAL SCANNING TECHNIQUES.
Hirschfeld, Tomas; Griffiths, P. R. ( 1969 )Recent advances in Fourier Transform Spectroscopy have brought this technique into direct competition with scanning spectrophotometers over the $31000 \mu$ infrared range. These advances stem mainly from the combination ... 
A BARIABLE REDUCEDMASS MODEL FOR QUASILINEAR MOLECULES.
Shinkle, N. L.; Reynard, Linda M.; Coon, J. B. ( 1969 )A Hamiltonian for large amplitude bending and Ktype rotation of triatomic molecules has been derived. The complete dependence of the kinetic energy on the bending angle is included. The Hamiltonian with a perturbing ... 
UPPER AND LOWER BOUNDS TO THE OVERLAP BETWEEN APPROXIMATE AND TRUE WAVEFUNCTIONS
Alexander, Millard H. ( 1969 )The determination of upper and lower bounds to the overlap between an approximate wavefunction for a particular atomic or molecular system and the unknown true wavefunction is of interest both as a test of the goodness of ... 
STATISTICS, IONIZATION POTENTIAL, AND PERTURBATION THEORY.
Musulin, Boris; Musulin, S. J. C. ( 1969 )The $Glockler^{1}$ formula for ionization potential is subjected to a reappraisal using modern data and computers. The appraisal method is based upon the use of statistical tests which have not commonly been applied to ... 
THE INFRARED SPECTRA OF MATRIX ISOLATED OXIDES OF THE ALKALI METALS
Rysnik, R.; White, David ( 1969 )The infrared spectra of several oxides of alkali metal have been observed. These, formed by reaction of the metals with oxygen and trapped in a solid krypton matrix at $20^{\circ}K$, consist primarily of peroxides. ... 
MICROWAVE SPECTRUM OF METHYLARSINE.
Levine, David M.; Gold, L. P. ( 1969 )The microwave spectrum of methylarsine, $CH_{3}AsH_{2}$, has been measured and analyzed. A preliminary value for the barrier to internal rotation of the methyl group is $1475 \pm 50$ cal/mole. This value will be compared ... 
THE MICROWAVE SPECTRUM OF TRANS METHYLDIIMIDE.
Steinmentz, Wayne E. ( 1969 )The microwave spectrum of trans$CH_{3}NND$ has been investigated in the frequency range 843 GHz. Only Atype transitions were found, which yielded the rotational constants B = 10,254.50 MHz and C = 9.239.13 MHz. A ... 
EXPERIMENTAL EXAMINATION OF THE EQUIVALENCE OF 1/t AND $1/\tau$, THE ROTATIONAL RELAXATION AND BROADENING RATES, IN MRR SPECTROSCOPY.
Harrington, Howard W. ( 1969 )This work utilizes MRR intensity law $measurements^{1}$ to compare the change in 1/t and $1/\tau$ for a given absorbing species as the primary source of broadening and relaxation was changed. Different impurity gases were ... 
VIBRATIONAL ANALYSIS OF $NCl_{3}$.
Jackovitz, J. F.; Carter, J. C.; Devia, J.; Bratton, R. F. ( 1969 )A vibrational analysis has been performed for nitrogen trichloride using various permutations of the UreyBradley force field. Force constants were obtained based on a frequency fit of the $^{14}N$ and $^{15}N$ species. ... 
INTERNAL ROTATION IN $N_{2}O_{2}$.
Strauss, Herbert L.; Bradley, G. M. ( 1969 )Transitions between torsional energy levels of liquid dinitrogen trioxide were observed in the farinfrared by means of interferometry. With the aid of a twofold Matthieu equation, the frequencies were interpreted and the ... 
CONCEPTS AND METHODS FOR THE ANALYSIS OF ACCIDENTAL RESONANCES WITH APPLICATION TO THE FUNDAMENTALS OF $CH_{3}Br$.
Blass, W. E.; Kurlat, M. ( 1969 )Use of invariants of the $Hamiltonian^{1}$ in the systematic analysis of accidental resonances has proven to be a useful technique. In addition, several other systematic approaches have been developed and used in this ... 
VIBRATIONAL ROTATIONAL BANDS OF METHYL ACETYLENE.
Murphy, Maryann; Faulkner, Thomas R.; Russell, Joel W. ( 1969 )Vibrationalrotational bands of methyl acetylene between 2000 and $3500 cm^{1}$ were observed on Professor Overend's spectrometer at the University of Minnesota. These high resolution spectra permitted a more complete ... 
GEOMETRY AND VIBRATIONAL SPECTRA OF ALKALINEEARTH DIFLUORIDES: $CaF_{2}, SrF_{2}, BaF_{2}$.
Calder, V.; Mann, D. E.; Seshadri, K. S.; Allavena, M.; White, David ( 1969 )The infrared spectra of $^{40}CaF_{2}, ^{44}CaF_{2}, ^{86}SrF_{2} ^{88}SrF_{2}$ and $BaF_{2}$ trapped in solid krypton matrices at $20^{\circ}K$ are reported. From precise measurements of the shifts of the vibrational modes ... 
VIBRATIONAL SPECTRA OF HYDRATES: INTRAMOLECULAR FORCES IN WATER MOLECULES IN THE CONDENSED STATE.
Fifer, R. A.; Schiffer, J. ( 1969 )The intermolecularly uncoupled fundamental frequencies of three isotopic species of water in various hydrogenbonded systems have been determined from a study of the infrared spectra of several transition metal hydrates, ... 
ALGEBRAIC THEORY OF POTENTIAL FUNCTIONS. APPLICATION TO CARBON DIOXIDE.
Chila, Z.; Chedin, A. ( 1969 )The great difficulties inherent in a very accurate determination of the potential function of a polyatomic molecule from its infrared spectrum, have led us to develop an original method allowing the treatment of pure numbers ... 
INFRARED SPECTRAL ABSORPTION COEFFICIENT DATA FOR WATER VAPOR.
Herget, William F.; Muirhead, J. S. ( 1969 )An experimental program is described in which the spectral absorption coefficients of $H_{2}O$ were determined in the 1 to 8 micron spectral range at temperatures from 575 to $1250^{\circ} K$, at path lengths up to one ... 
VIBRATIONAL FREQUENCIES OF THE OH AND SH IN ALKALI HALIDE SOLID SOLUTIONS.
Apple, Bernard A.; Morgan, H. W. ( 1969 )A molecular orbital calculation has been applied to the impurities $OH^{}$ and $SH^{}$ and their perturbing alkali halide lattice environments. The impurities were described by free state molecular wave functions of the ... 
INFRARED SPECTRA OF THE POLYMORPHIC FORMS OF ZIRCONIA POWDERS
Phillippi, Conrad M.; McDevitt, Neil T. ( 1969 )Powder samples must be employed when a crystalline materials under study is not available as a thin film or a large single crystal with oriented optically polished surfaces for infrared transmission and reflection measurements. ...