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ArK


Constants of diatomic molecules

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Data compilation copyright by the U.S. Secretary of Commerce on behalf of the U.S.A. All rights reserved.

Data compiled by: Klaus P. Huber and Gerhard H. Herzberg

Data collected through January, 1977

Symbols used in the table of constants
SymbolMeaning
State electronic state and / or symmetry symbol
Te minimum electronic energy (cm-1)
ωe vibrational constant – first term (cm-1)
ωexe vibrational constant – second term (cm-1)
ωeye vibrational constant – third term (cm-1)
Be rotational constant in equilibrium position (cm-1)
αe rotational constant – first term (cm-1)
γe rotation-vibration interaction constant (cm-1)
De centrifugal distortion constant (cm-1)
βe rotational constant – first term, centrifugal force (cm-1)
re internuclear distance (Å)
Trans. observed transition(s) corresponding to electronic state
ν00 position of 0-0 band (units noted in table)
Diatomic constants for 39K40Ar
StateTeomegaeomegaexeomegaeyeBealphaegammaeDebetaereTrans.nu00
predicted potential energy curves for higher excited states Pascale and Vandeplanque, 1974.
C 2Sigma 1           C rarrow X 
Tam, Moe, et al., 1976
A 2Pi, B 2Sigmatheoretical interatomic potentials Baylis, 1969.
X 2Sigma+ 0 2         5.2 3 4  
Mattison, Pritchard, et al., 1974; Freeman, Mattison, et al., 1974; Freeman, Mattison, et al., 1976

Notes

1Continuous emission with maximum at 19672 cm-1, shifted by 1355 cm-1 from the forbidden K 5s-4s line at 21027 cm-1.
2theoretical interatomic potentials Baylis, 1969.
3Based on atomic scattering data Buck and Pauly, 1968, Duren, Raabe, et al., 1968, Fluendy, Kerr, et al., 1975. The ground state potential supports nine vibrational levels Freeman, Mattison, et al., 1976.
4Mol. beam magn. reson. 5
5The spin-rotation interaction [gamma(v=0) = 8.0E-6 Mattison, Pritchard, et al., 1974, Freeman, Mattison, et al., 1976] as well as the hyperfine interaction Freeman, Mattison, et al., 1974, have been investigated.
6From K+ -off- Ar total scattering cross sections Budenholzer, Galante, et al., 1975; reference to earlier experimental and theoretical work may be found in this paper.

References

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Data compilation copyright by the U.S. Secretary of Commerce on behalf of the U.S.A. All rights reserved.

Pascale and Vandeplanque, 1974
Pascale, J.; Vandeplanque, J., Excited molecular terms of the alkali-rare gas atom pairs, J. Chem. Phys., 1974, 60, 2278. [all data]

Tam, Moe, et al., 1976
Tam, A.C.; Moe, G.; Bulos, B.R.; Happer, W., Excimer radiation from Na-noble-gas and K-noble-gas molecules, Opt. Commun., 1976, 16, 376. [all data]

Baylis, 1969
Baylis, W.E., Semiempirical, pseudopotential calculation of alkali-noble-gas interatomic potentials, J. Chem. Phys., 1969, 51, 2665. [all data]

Mattison, Pritchard, et al., 1974
Mattison, E.M.; Pritchard, D.E.; Kleppner, D., Spin-rotation coupling in the alkali-rare-gas van der Waals molecule KAr, Phys. Rev. Lett., 1974, 32, 507. [all data]

Freeman, Mattison, et al., 1974
Freeman, R.R.; Mattison, E.M.; Pritchard, D.E.; Kleppner, D., Alkali-metal hyperfine shift in the van der Waals molecule KAr, Phys. Rev. Lett., 1974, 33, 397. [all data]

Freeman, Mattison, et al., 1976
Freeman, R.R.; Mattison, E.M.; Pritchard, D.E.; Kleppner, D., The spin-rotation interaction in the van der Waals molecule KAr, J. Chem. Phys., 1976, 64, 1194. [all data]

Buck and Pauly, 1968
Buck, U.; Pauly, H., Interferenzen bei atomaren Sto«beta»prozessen und ihre Interpretation durch ein modifiziertes Lennard-Jones-Potential, Z. Phys., 1968, 208, 390. [all data]

Duren, Raabe, et al., 1968
Duren, R.; Raabe, G.P.; Schlier, Ch., Genaue Potentialbestimmung aus Streumessungen: Alkali-Edelgas-Systeme, Z. Phys., 1968, 214, 410. [all data]

Fluendy, Kerr, et al., 1975
Fluendy, M.A.D.; Kerr, I.H.; Lawley, K.P.; McCall, J.M., Differential scattering cross sections in the eV region: the K/Ar ground state potential, J. Phys. B:, 1975, 8, 190. [all data]

Budenholzer, Galante, et al., 1975
Budenholzer, F.E.; Galante, J.J.; Gislason, E.A.; Jorgensen, A.D., Determination of the K+ - Ar potential from total cross section measurements, Chem. Phys. Lett., 1975, 33, 245. [all data]


Notes

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