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Search Publications by

Gerald T. Fraser (Fed)

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Displaying 51 - 75 of 156

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
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(15N2) 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
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

The 1.27 m O 2 Continuum Absorption in O 2 /CO 2 Mixtures

December 1, 2001
Gerald T. Fraser, Walter J. Lafferty
The collision-induced, near-infrared O2 continuum band overlapping the weak α1δg - X3ς-g, v=O -0, 1.27 m discrete band of O2 has been investigated in O2/CO2 mixtures at room temperature (T=296 K) for total densities from 1.8 to 9.3 times that of an ideal

Reinvestigation of the Microwave Spectrum of Acetamide

August 1, 2001
R D. Suenram, G Y. Golubiatnikow, I Leonov, Jon T. Hougen, J Ortigoso, I Kleiner, Gerald T. Fraser
A total of 57 jet-cooled Fourier transform and 30 submillimeter measurements for acetamide have been recorded using a new version of our spectrometer which has been upgraded with a heated nozzle and an expanded automatic scanning range. The 115 transitions

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

May 1, 2001
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

The Ground and First Excited Torsional States of Acetic Acid

February 1, 2001
Vadim V. Ilyushin, E A. Alekseev, S K. Dyubko, S V. Podnos, I Kleiner, L Margules, G Wlodarczak, J Demaison, J Cosleou, B Mate, E N. Karyakin, G Y. Golubiatnikow, Gerald T. Fraser, R D. Suenram, Jon T. Hougen
A global fit of microwave and millimeter wave rotational transitions in the ground and first excited torsional states (vt = 0 and 1) of acetic acid (CH3COOH) is reported, which combines older measurements from the literature with new measurements from