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Determination of the dipole moment of ArH+ from the rotational Zeeman effect by tunable far infrared laser spectroscopy

Laughlin, K. B. and Blake, Geoffrey A. and Cohen, R. C. and Hovde, D. C. and Saykally, R. J. (1987) Determination of the dipole moment of ArH+ from the rotational Zeeman effect by tunable far infrared laser spectroscopy. Physical Review Letters, 58 (10). pp. 996-999. ISSN 0031-9007. doi:10.1103/PhysRevLett.58.996.

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The first determination of the electric dipole moment of a molecular ion is reported. A tunable far-infrared laser was used to measure the Zeeman effect in low-J rotational transitions of ArH+ and ArD+, and the dipole was determined from the isotopic dependence of gr. The result (μ=1.4±0.4 D) is in marginal agreement with ab initio calculations (2.2 D). It is shown that this method can ultimately provide molecular-ion dipole moments accurate to within a few percent. The adiabatic internuclear separations of both isotopes were also determined from the gr values.

Item Type:Article
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URLURL TypeDescription
Blake, Geoffrey A.0000-0003-0787-1610
Cohen, R. C.0000-0001-6617-7691
Additional Information:© 1987 The American Physical Society Received 17 November 1986 This work was supported by the National Science Foundation under Grant No. CHE-84-02861. One of us (K.B.L.) would like to thank the National Science Foundation for a fellowship. Another of us (G.A.B.) is a Berkeley Miller Research Fellow, 1985-1987. Another of us (R.J.S.) was a Berkeley Miller Research Professor, 1985-1986.
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NSF Graduate Research FellowshipUNSPECIFIED
Miller Institute for Basic Research in ScienceUNSPECIFIED
Issue or Number:10
Record Number:CaltechAUTHORS:LAUprl87
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ID Code:6829
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Deposited On:23 Dec 2006
Last Modified:08 Nov 2021 20:37

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