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Author: jon hougen

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61. On the Physical Interpretation of Torsion-Rotation Parameters in Methanol and Acetaldehyde: Comparison of Global Fit and Ab Initio Results
Published: 2/22/1999
Authors: L H Xu, R M Lees, Jon Torger Hougen
Abstract: Equilibrium structural constants and certain torsion-rotation interaction parameters have been determined for methanol and acetaldehyde from ab initio calculations using Gaussian 94. The substantial molecular flexing which occurs in going from the b ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=841300

62. Global Analysis of a-, b- and c-Type Transitions Involving Tunneling Components of K = 0 and 1 States of the Methanol Dimer
Published: 1/1/1999
Authors: C Lugez, Francis John Lovas, Jon Torger Hougen, N Ohashi
Abstract: Spectral data on K = 0 and 1 levels of the methanol dimer available from previous and present Fourier transform microwave measurements have been interpreted globally, using a group-theoretically derived effective Hamiltonian and corresponding tunneli ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=841285

63. Global Analysis of a-, b-, c- Type Transitions Involving Tunneling Components of K = 0 and 1 States of the Methanol Dimer
Published: 1/1/1999
Authors: C Lugez, Francis John Lovas, Jon Torger Hougen, N Ohashi
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=103992

64. Linestrengths of Torsion-Rotation Transitions of Methanol for J ≤ 22, K ≤ 14, and v^dt^ ≤ 2 from Hamiltonian-Based Calculations
Published: 1/1/1999
Authors: M A Mekhtiev, P D Godfrey, Jon Torger Hougen
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=104030

65. On the Physical Interpretation of Torsion-Rotation Parameters in Methanol and Acetaldehyde: Comparison of Global Fit and {I}ab initio{I} Results
Published: 1/1/1999
Authors: L H Xu, R M Lees, Jon Torger Hougen
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=104257

66. The K-Rotational Labeling Problem for Eigenvectors from Internal Rotor Calculations: Application to Energy Levels of Acetaldehyde Below the Barrier
Published: 1/1/1999
Authors: J Ortigoso, I Kleiner, Jon Torger Hougen
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=104092

67. Line Strengths of Torsion-Rotation Transitions of Methanol for J {less than or equal} 14 and v^dt^ {less than or equal} 2 From Hamiltonian Based Calculations
Published: 11/9/1998
Authors: M A Mekhtiev, P D Godfrey, Jon Torger Hougen
Abstract: Line strengths have been obtained for methanol, based on matrix elements of the dipole moment operator evaluated in a set of torsion-rotation eigenfunctions. The latter were obtained from the parameters and effective Hamiltonian giving the best spec ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=841295

68. Some Properties and Uses of Torsional Overlap Integrals
Published: 1/1/1998
Authors: M A Mekhtiev, Jon Torger Hougen
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=104031

69. Coordinates, Hamiltonian, and Symmetry Operations for the Small-Amplitude Vibrational Problem in Methyl-Top Internal-Rotor Molecules like CH^d3^CHO
Published: 1/1/1997
Author: Jon Torger Hougen
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=103866

70. Effective Rotation-Pseudorotation Hamiltonian for X^d3^-Type Molecules: Application to the B~-X~ Transition of Na^d3^
Published: 1/1/1997
Authors: N Ohashi, M Tsuura, Jon Torger Hougen, W E Enst, S Rakowsky
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=104069



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