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NaXe


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 March, 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 23Na(132)Xe
StateTeomegaeomegaexeomegaeyeBealphaegammaeDebetaereTrans.nu00
C 2Sigma 1           C rarrow X 
Tam, Moe, et al., 1976
B 2Sigma 2           B rarrow X 
York, Scheps, et al., 1975
A 2Pi 4          3.31 3 A rarrow X 
York, Scheps, et al., 1975
X 2Sigma+ 0 5         4.91 6  

Notes

1Attractive potential; continuous emission with maximum at 22690 cm-1, shifted to the red by 3050 cm-1 from the forbidden Na 4s-3s line at 25740 cm-1.
2Unstable except for a very small van der Waals minimum Baylis, 1969; responsible for the far-blue-wing fluorescence spectrum of the Na D lines (16956 and 16973 cm-1) in a Xe atmosphere.
3Morse potential parameters from the analysis York, Scheps, et al., 1975 of the extreme-red-wing fluorescence spectrum of the Na D lines in the presence of Kr or Xe gas; omegae ~74 or 83, respectively. See also Baylis, 1969.
4Attractive potential; De = 1130 cm-1. 3
5Repulsive except for a small van der Waals minimum Baylis, 1969 York, Scheps, et al., 1975.
6From atomic scattering data Duren, Raabe, et al., 1968; see also Baylis, 1969, Nikiforov and Shcherba, 1972.

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.

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]

York, Scheps, et al., 1975
York, G.; Scheps, R.; Gallagher, A., Continuum radiation and potentials of Na-noble gas molecules, J. Chem. Phys., 1975, 63, 1052. [all data]

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

Nikiforov and Shcherba, 1972
Nikiforov, E.V.; Shcherba, L.D., Potentials of interaction between alakli metal and inert gas atoms, Opt. Spectrosc. Engl. Transl., 1972, 32, 567, In original 1047. [all data]


Notes

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