Rotational spectra and van der Waals potentials of Ne-Ar

Publikation: Beitrag in FachzeitschriftArtikelForschungPeer-Review

Autoren

  • J. U. Grabow
  • A. S. Pine
  • G. T. Fraser
  • F. J. Lovas
  • R. D. Suenram
  • T. Emilsson
  • E. Arunan
  • H. S. Gutowsky

Externe Organisationen

  • National Institute of Standards and Technology (NIST)
  • University of Illinois Urbana-Champaign (UIUC)
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Details

OriginalspracheEnglisch
Seiten (von - bis)1181-1187
Seitenumfang7
FachzeitschriftThe journal of chemical physics
Jahrgang102
Ausgabenummer3
PublikationsstatusVeröffentlicht - 1995

Abstract

The high sensitivity and resolution of Fourier-transform microwave spectroscopy using a pulsed jet coaxial to a Fabry-Perot resonator have been exploited to measure pure rotational transitions of several isotopomers of the weakly polar Ne-Ar van der Waals dimer in natural abundance. Transitions of the most abundant isotopomer, 20Ne-40Ar, could be observed with an excellent signal-to-noise ratio with a single polarization pulse. The ground-state rotational constants for this species yield a zero-point separation of R0≃360.7 pm. Simple model van der Waals potentials have been fit to the microwave transitions for the various isotopomers, providing estimates of the equilibrium spacing at the well minimum of R e=348.0(2) pm. More elaborate potentials based on ab initio calculations or on molecular-beam scattering cross sections and thermodynamic and transport properties have also been tested. The induced electric dipole moment is estimated to be μ0=7.3(1.6)×10-33 C m [0.0022(5) D] by comparison of π/2 polarization pulses with a reference molecule (Ar-CO2) whose dipole moment is known from Stark effect splitting measurements. Uncertainties in parentheses are one standard deviation.

ASJC Scopus Sachgebiete

Zitieren

Rotational spectra and van der Waals potentials of Ne-Ar. / Grabow, J. U.; Pine, A. S.; Fraser, G. T. et al.
in: The journal of chemical physics, Jahrgang 102, Nr. 3, 1995, S. 1181-1187.

Publikation: Beitrag in FachzeitschriftArtikelForschungPeer-Review

Grabow, JU, Pine, AS, Fraser, GT, Lovas, FJ, Suenram, RD, Emilsson, T, Arunan, E & Gutowsky, HS 1995, 'Rotational spectra and van der Waals potentials of Ne-Ar', The journal of chemical physics, Jg. 102, Nr. 3, S. 1181-1187. https://doi.org/10.1063/1.468904
Grabow, J. U., Pine, A. S., Fraser, G. T., Lovas, F. J., Suenram, R. D., Emilsson, T., Arunan, E., & Gutowsky, H. S. (1995). Rotational spectra and van der Waals potentials of Ne-Ar. The journal of chemical physics, 102(3), 1181-1187. https://doi.org/10.1063/1.468904
Grabow JU, Pine AS, Fraser GT, Lovas FJ, Suenram RD, Emilsson T et al. Rotational spectra and van der Waals potentials of Ne-Ar. The journal of chemical physics. 1995;102(3):1181-1187. doi: 10.1063/1.468904
Grabow, J. U. ; Pine, A. S. ; Fraser, G. T. et al. / Rotational spectra and van der Waals potentials of Ne-Ar. in: The journal of chemical physics. 1995 ; Jahrgang 102, Nr. 3. S. 1181-1187.
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T1 - Rotational spectra and van der Waals potentials of Ne-Ar

AU - Grabow, J. U.

AU - Pine, A. S.

AU - Fraser, G. T.

AU - Lovas, F. J.

AU - Suenram, R. D.

AU - Emilsson, T.

AU - Arunan, E.

AU - Gutowsky, H. S.

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