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Showing 1 to 20 of 1061 for “"Vibrational"”.
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Vibrational Relaxation and Vibrational Cooling in Molecular Crystals
The processes of vibrational relaxation (VR) and vibrational cooling (VC) are investigated both experimentally and theoretically in low temperature crystals of complex molecules, specifically benzene, naphthalene, anthracene and durene. In addition to ps CARS data previously obtained on these pure …
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Vibrational Kerr spectroscopy
The infrared vibrational Kerr effect was investigated as a potentially selective and sensitive detection method for explosives. The investigation of the vibrational Kerr effect commenced with the first reported measurement of the integrated infrared vapor absorption strengths for the explosives …
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Vibrational studies of tetrahalogenocuprates (II)
… The assignment problems associated with the vibrational spectrum of caesium tetrachlorocuprate(II) were critically discussed. A unit cell analysis of the compound was performed with two primary objectives: (A) to interpret the vibrational spectrum; and (B) to develop a competent model force …
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Nozzle Flow with Vibrational Nonequilibrium
… equations that have been modified for vibrational nonequilibrium. The energy equation is replaced by two equations. One equation accounts for energy effects due to the translational and rotational degrees of freedom, and the other accounts for the affects due to the vibrational degree …
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The (Semi-)Classical Vibrational Echo
The ultrafast vibrational echo experiment is one of a modern generation of nonlinear coherent optical spectroscopies probing the nuclear dynamics of condensed phases. The vibrational echo is the vibrational analog of the NMR spin echo and selectively eliminates inhomogeneous broadening from the …
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Vibrational Energy Relaxation in Liquids
This research was supported by U.S. Army Research Office contract DAAH04-96-1-0038 and Air Force Office of Scientific Research contract F49620-97-1-0056. Partial support is acknowledged from National Science Foundation grant DMR-9714843. I wish to also acknowledge support from AASERT fellowships …
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Vibrational characteristics of building frames
Thesis: M.S., Massachusetts Institute of Technology, Department of Civil and Sanitary Engineering, 1946
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Vibrational Characteristics of Dummy Headforms
… headforms used in impact testing, though their vibrational characteristics are not well understood. They may have different kinematic responses in various impact scenarios if the impact excites any of their natural frequencies; resonance is especially likely to occur in short-duration impacts …
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SEMICLASSICAL VIBRATIONAL SPECTROSCOPY BEYOND POWER SPECTRA
… of classical trajectories. Traditionally, SC vibrational spectroscopy has focused on the calculation of power spectra, which provide vibrational energy levels but do not directly reproduce experimental IR intensities. This Ph.D. thesis presents the development of a new semiclassical approach …
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SEMICLASSICAL VIBRATIONAL SPECTROSCOPY OF BIOMOLECULAR SYSTEMS
In questa tesi, presento un lavoro teorico sulla dinamica semiclassica che ha permesso di riprodurre con precisione gli spettri vibrazionali di molecole di interesse biologico. All’inizio del mio dottorato, ho sviluppato un software per eseguire la dinamica di Adiabatic Switching utilizzando …
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Testing the vibrational nature of 100Ru
… with previously assumed low-lying spherical vibrational structure showed that very few passed the criteria. Of the few remaining candidates there is insufficient spectroscopic information to draw conclusions. As part of a larger strategy to address this issue, the structure of 100Ru was …
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The Vibrational Spectra of Chlorosubstituted Hydrocarbons
… difference between conformers (AH e ) by vibrational spectroscopy, a comprehensive review of existing literature is presented for conformational equilibria involving a wide range of compounds.<br/><br/>In the case of saturated chloro-hydrocarbons, vibrational assignments in relation to …
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The vibrational spectra of rectangular plates
The wire drive pulse-echo system has been extensively used to excite and measure modes of vibration of thin rectangular plates. The frequency spectra of different modes have been investigated as a function of the material elastic moduli and the plate geometry. Most of the work was carried out on …
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Picosecond Vibrational Spectroscopy of Shocked Solids
This research was supported by US Army Research Office Contracts DAAH04-93-G-0014 and DAAH04-96-1-0038, Air Force Office of Scientific Research Contracts F49620-94-1-0108 and F49620-97-1-0056, and National Science Foundation Grants DMR 94-04806 and DMR 97-14843.
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Vibrational energy flow in substituted benzenes
Made available in DSpace on 2014-05-30T16:39:21Z (GMT). No. of bitstreams: 2 Brandt_Pein.pdf: 12807171 bytes, checksum: 7971e5d3c0720847bd4a4a8b6745db92 (MD5) license.txt: 4058 bytes, checksum: 7879642b09f616239fdcff48f73d1180 (MD5)
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Vibrational and thermodynamic properties of ferrocene
The vibrational and thermodynamic properties of crystalline ferrocene (dicyclopentadienyl iron, Fe(CH)2' Fc), and dilute soluSStions of Fc in the liq-uid crystals 4-n-hexyloxybenzylidene 4'-npropylaniline (HBPA) and terephthal-bis-butylaniline (TBBA) have been studied using Mossbauer spectroscopy. …
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Crystal field aspects of vibrational spectra
Crystal Field Theory (C.F.T.), and its congeners, Ligand Field Theory (L.F.T.) and Molecular Orbital Theory (M.O.T.), have been most successful in explaining many of the properties of transition metal complexes. This is particularly true of their electronic spectra, magnetochemistry and chemical …
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Remaining Unperturbed by the Vibrational Response: Probing Vibrational Coupling, Relaxation, and Solvent Effects with 2D IR Spectroscopy
… laser technique that is capable of probing the vibrational properties and dynamics down to the picosecond or even femtosecond timescales. This technique enables the analysis of vibrational couplings, energy redistribution pathways, and solvation dynamics in real time. The early chapters of this …
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Chemical and biochemical applications of vibrational spectroscopy
Vibrational spectroscopy is a technique that probes a molecule’s vibrational modes via infrared absorption and Raman scattering, and is often used as a tool for characterization and/or functional group determination. Because infrared (IR) and Raman spectra are directly influenced by the bonds …
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