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Topic Area: Chemical Physics
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Displaying records 11 to 20 of 31 records.
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11. On Walking in the Footprints of Giants
Topic: Chemical Physics
Published: 3/1/2010
Author: Marilyn E Jacox
Abstract: This chapter tells of a lifelong fascination with light, a messenger bearing information from realms ranging from the galactic to the submicroscopic. Personal interactions have shaped and informed this life journey. Accounts of some of the most imp ...

12. Symmetry and Fourier analysis of the ab-initio-determined torsional variation of structural and Hessian-related quantities for application to vibration-torsion-rotation interactions in CH3OH
Topic: Chemical Physics
Published: 1/11/2010
Authors: Li-Hong Xu, Jon Torger Hougen, Jonathan M. Fisher, Ronald M. Lees
Abstract: The aim of the present paper is to investigate the use of quantum chemistry calculations to obtain the torsional dependence of various structural and vibrational-force-field-related quantities that could help in estimating the vibration-torsion-rotat ...

Topic: Chemical Physics
Published: 1/4/2010
Authors: S Sholom, Marc F Desrosiers, V Chumak, N. Luckyannov, S.L. Simon, A Bouville
Abstract: Quality control dosimetry is important to the routine operation of a radiation processing facility. For many applications this dosimetry must be traceable to a national primary standard. After irradiation at an industrial facility, NIST-supplied t ...

14. 34S16O2: High Resolution analysis of the (030), (101), (111), (002) and (201) vibrational states; Determination of equilibrium rotational constants for sulfur dioxide.
Topic: Chemical Physics
Published: 10/12/2009
Authors: Walter Joseph Lafferty, Jean-Marie Flaud
Abstract: High resolution Fourier transform spectra of a sample of sulfur dioxide enriched in 34S (95.3%). have been completely analyzed leading to a large set of assigned lines. The experimental levels derived from this set of transitions have been fit to wi ...

15. Relative Photon-to-Carrier Efficiencies of Alternating Nanolayers of Zinc Phthalocyanine and C60 Multilayer Films Assessed by Time-Resolved Terahertz Spectroscopy
Topic: Chemical Physics
Published: 10/1/2009
Authors: Okan Esenturk, Joseph S Melinger, Paul A. Lane, Edwin J Heilweil
Abstract: Alternating multi-layer and 1:1 blended films of zinc phthalocyanine (ZnPc)and buckminsterfullerene (C60) were investigated as model active layers for solar cells by Time-Resolved Terahertz Spectroscopy (TRTS). Relative photon-to-carrier efficiencies ...

16. Submillimeter Spectrum and Analysis of Vibrational and Hyperfine Coupling Effects in (HI)2
Topic: Chemical Physics
Published: 10/1/2009
Authors: Laurent H. Coudert, Sergei P. Belov, F. Willaert, B. McElmurry, R. Lucchese, John W. Bevan, Jon Torger Hougen
Abstract: Observed rotational-vibrational transitions of HI dimer in the geared bending mode, centered at 511.9 GHz, are reported. This ~50 kHz high resolution spectrum was recorded using a co-axially configured pulsed jet submillimeter spectrometer and the h ...

17. Observation of the C2H2-N2O van der Waals Complex in the Overtone Range Using CW-CRDS
Topic: Chemical Physics
Published: 9/14/2009
Author: Walter Joseph Lafferty
Abstract: A slit nozzle supersonic expansion containing acetylene (0.246l/min) and nitrous oxide (0.355l/min) seeded into Ar (1.26l/min) is investigated using CW cavity ring down spectroscopy, in the 1.5 m range. The C2H2N2O van der Waals comp ...

18. Strategies for Advanced Applications of Permutation-Inversion Groups to the Microwave Spectra of Molecules with Large Amplitude Motions
Topic: Chemical Physics
Published: 5/4/2009
Author: Jon Torger Hougen
Abstract: This article presents permutation-inversion group-theoretical strategies and recipes that will help a high-resolution molecular spectroscopist attempting to use the existing pedagogical literature to carry out their own treatment of the basic symmet ...

19. Conformational Effects on Excitonic Interactions in a Prototypical H-bonded Bichromophore: Bis(2-hydroxyphenyl)methane
Topic: Chemical Physics
Published: 4/30/2009
Authors: David F Plusquellic, Nathan Pillsbury, Christian Mueller, Timothy Zwier
Abstract: Laser induced fluorescence (LIF), single vibronic level fluorescence, UV holeburning, and fluorescence-dip infrared (FDIR) spectroscopy have been carried out on bis-(2-hydroxyphenyl)methane (2HDPM) in order to characterize the ground and first excite ...

20. Analysis and fit of the high-resolution spectrum of the A 1A u X 1A g LIF spectrum of the two-equivalent-top molecule biacetyl
Topic: Chemical Physics
Published: 4/23/2009
Author: Jon Torger Hougen
Abstract: Abstract The laser-induced visible fluorescence excitation spectrum of the à 1Au (S1) - X̃ 1Ag (S0) transition in biacetyl (CH3-C(=O)-C(=O)-CH3) exhibits a long progression in the torsional vibrations of the two equivalent methyl tops in this ...

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