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Topic Area: Chemical Physics

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 ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=904195

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 ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=903523

13. UV EFFECTS IN TOOTH ENAMEL AND THEIR POSSIBLE APPLICATION IN EPR DOSIMETRY WITH FRONT TEETH
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 ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=901120

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 ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=842490

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 ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=902140

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 ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=903808

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 ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=901007

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 ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=901502

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 ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=901215

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 ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=901390



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