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Search Publications by: Francis J. Lovas (Assoc)

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Displaying 51 - 75 of 160

Rotational Spectra, Conformational Structures and Dipole Moments of 2-(Ethylthio) Ethanol by Jet-Cooled FTMW and Ab Initio Calculations

January 1, 2004
Author(s)
R D. Suenram, David F. Plusquellic, Francis J. Lovas, A H. Walker, Q Liu, L H. Xu, J O. Jensen, A C. Samuels
The rotational spectra of three low-energy conformers of 2-(ethylthio)ethanol also known as ethyl 2-hydroxyethylsulfide or hydroxyethylethyl sulfide (HOEES), together with the monosubstituted C and 34S isotopic forms of the two lowest energy conformers

Kinematics of the Sagittarius B2(N-LMH) Molecular Core

October 1, 2003
Author(s)
J M. Hollis, J A. Pedelty, D A. Boboltz, S Y. Liu, Lewis E. Snyder, Patrick Palmer, Francis J. Lovas, P R. Jewell
Ethyl cyanide (CH3CH2CN) emission and absorption have been imaged with the Very Large Array toward Sagittarius B2(N-LMH) by means of the 5(15)-4(14) rotational transition at 43.5 GHz (lambda similar to mm). The 1.5 x 1.4 VLA beam shows two principal

A Sensitive Very Large Array Search for Small-Scale Glycine Emission Toward OMC-1

May 1, 2003
Author(s)
J M. Hollis, J A. Pedelty, Lewis E. Snyder, P R. Jewell, Francis J. Lovas, Patrick Palmer, S Y. Liu
We have conducted a deep Q-band (lambda similar to 7 mm) search with the Very Large Array (VLA) toward OMC-1 for the lowest energy conformation ( conformer I) of glycine (NH2CH2COOH) in four rotational transitions: 6(15)-5(14), 6(24)-5(23), 7(17)-6(16)

Line Assignments and Global Analysis of the Tunneling-Rotational Microwave Absorption Spectrum of Dimethyl Methylphosphonate

March 1, 2003
Author(s)
N Ohashi, J Pyka, G Y. Golubiatnikow, Jon T. Hougen, R D. Suenram, Francis J. Lovas, A Lesarri, Y Kawashima
Line assignments were carried out for about 600 Fourier transform microwave transitions for dimethyl methylphosphonate involving levels of all six symmetry species in the G 18 molecular symmetry group appropriate for three large-amplitude motions and

Diatomic spectral database

January 1, 2003
Author(s)
Francis J. Lovas, E Tiemann, J S. Coursey, Svetlana A. Kotochigova, Jeffrey Chang, Karen J. Olsen, Robert A. Dragoset

Hydrocarbon spectral database

January 1, 2003
Author(s)
Francis J. Lovas, R D. Suenram, J S. Coursey, Svetlana A. Kotochigova, Jeffrey Chang, Karen J. Olsen, Robert A. Dragoset

Triatomics spectral database

January 1, 2003
Author(s)
Francis J. Lovas, J S. Coursey, Svetlana A. Kotochigova, Jeffrey Chang, Karen J. Olsen, Robert A. Dragoset

Confirmation of Interstellar Acetone

October 1, 2002
Author(s)
Lewis E. Snyder, Francis J. Lovas, David Mehringer, Nina Yanti Miao, Y J. Kuan, J M. Hollis
We present new observations of interstellar acetone [(CH3)(2) CO] from both the NRAO 12 m and the BIMA array. We report NRAO 12 m detections of 13 new acetone emission features that can be assigned to 20 acetone transitions. These assignments are based on

Fourier Transform Microwave Spectrum and Ab Initio Study of Dimethyl Methylphosphonate

January 1, 2002
Author(s)
R D. Suenram, Francis J. Lovas, David F. Plusquellic, A Lesarri, Y Kawashima, J O. Jensen, A C. Samuels
The rotational spectrum of dimethyl methylphophonate (DMMP) has been studied using a pulsed molecular beam Fourier transform microwave spectrometer. The spectrum is complicated by the internal rotation motions of the three methyl tops in the molecule as