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Search Publications by: Angela R. Hight Walker (Fed)

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Displaying 151 - 175 of 184

Rotational Spectrum of Soman

January 1, 2004
Author(s)
R S. DaBell, R D. Suenram, Angela R. Hight Walker, R J. Lavrich, David F. Plusquellic, M W. Ellzy, J M. Lochner, L Cash, J O. Jensen, A C. Samuels

Conformational Analysis of the Jet-Cooled Peptide Mimetic Ethylacetamidoacetate from Torsion-Rotation Spectra

September 1, 2003
Author(s)
R J. Lavrich, Angela R. Hight Walker, David F. Plusquellic, I Kleiner, R D. Suenram, Jon T. Hougen, Gerald T. Fraser
Rotational spectra of two conformers of the dipeptide mimetic, ethyl acetamidoacetate, were measured in a molecular beam using a Fourier-transform microwave spectrometer. In each conformer, internal rotation of the acetyl methyl group gives rise to

Experimental Studies of Peptide Bonds: Identification of the C 7 eq Conformation of the Alanine Dipeptide Analog N-Acetyl-Alanine N'-Methylamide From Torsion-Rotation Interactions

January 1, 2003
Author(s)
R J. Lavrich, David F. Plusquellic, R D. Suenram, Gerald T. Fraser, Angela R. Hight Walker, M J. Tubergen
Rotational spectra of the bio-mimetic molecule, alanine dipepitide and the double 15N( 15N 2) isotopomer have been observed using a pulsed-molecular-beam Fourier transform microwave spectrometer. The spectra reveal large tunneling splittings from the

The Validation of Fourier-Transform Microwave Spectroscopy for Trace-Gas Analysis

February 1, 2002
Author(s)
Pamela M. Chu, R D. Suenram, Angela R. Hight Walker, R S. DaBell, George C. Rhoderick, Gerald T. Fraser
There is strong interest by regulatory agencies and automobile manufacturers, motivated in large part by increasingly stringent emission standards, for measurement tools capable of quantifying various hydrocarbons, oxygenated hydrocarbons, etc., in

Spontaneous Coherent Microwave Emission and the Sawtooth Instability in a Compact Storage Ring

May 1, 2001
Author(s)
Uwe Arp, Gerald T. Fraser, Angela R. Hight Walker, Thomas B. Lucatorto, K K. Lehmann, K Harkay, N Sereno, K Kim
Strong evidence for self-excited emission of coherent synchrotron radiation in the microwave spectral region was observed at the Synchrotron Ultraviolet Radiation Facility SURF III electron storage ring at the National Institute of Standards and Technology

Rotational Spectrum of Sarin

January 1, 2001
Author(s)
Angela R. Hight Walker, R D. Suenram, A C. Samuels, J O. Jensen, M W. Ellzy, J M. Lochner, D Zeroka

Rotational Signatures of Chemical Agents and Related Compounds

January 1, 2000
Author(s)
R D. Suenram, Angela R. Hight Walker, Gerald T. Fraser, David F. Plusquellic, R S. DaBell, Pamela M. Chu, George C. Rhoderick, A C. Samuels, J O. Jensen, Pavol Krivosik, J M. Lochner
The rotational spectra of more than twenty different chemical-warfare agents, precursors, and decomposition products have been studied using the technique of Fourier-Transform MicroWave (FTMW) spectroscopy. The compounds studied include the four common G

Infrared Spectroscopic Studies of Wind-Tunnel Contamination

May 1, 1998
Author(s)
Angela R. Hight Walker, David F. Plusquellic, Gerald T. Fraser, A Weber, Walter J. Lafferty
Three infrared diagnostic techniques are developed to characterize chemical contamination in wind tunnels and shock tubes which can affect the reliability of infrared sensor and imaging system tests. The techniques are based on mid-infrared spectroscopy

New Infrared Beamline at the NIST SURF II Storage Ring

October 1, 1997
Author(s)
Angela R. Hight Walker, Uwe Arp, Gerald T. Fraser, Thomas B. Lucatorto, J Wen
The success of the infrared program at the National Synchrotron Light Source [NSLS] has motivated the establishment of an infrared beamline at the infrared beamline and its associated infrared microscope instrumentation and show preliminary Fourier
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