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HeLi


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 7Li4He
StateTeomegaeomegaexeomegaeyeBealphaegammaeDebetaereTrans.nu00
X 2Sigma Dehmer and Wharton, 1972, Pascale and Vandeplanque, 1974, Bottcher, Cravens, et al., 1975 and B 2Sigma Bottcher, Cravens, et al., 1975 are unstable except for very small van der Waals minima; A 2Pi Krauss, Maldonado, et al., 1971, Bottcher, Cravens, et al., 1975 is attractive with an estimated well depth of 500 to 1500 cm-1. Additional excited state potential curves computed by Schneiderman and Michels, 1965, Pascale and Vandeplanque, 1974. Theoretical coefficients for collision-induced absorption by Li - He (nu=0 - 300 cm-1) calculated by Bottcher, Dalgarno, et al., 1973. The noble-gas broadening of the Li resonance line was studied by Gallagher, 1975.

References

Go To: Top, Constants of diatomic molecules, Notes

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

Dehmer and Wharton, 1972
Dehmer, P.; Wharton, L., Absolute total scattering cross sections for 7Li on He, Ne, Kr, and Xe, J. Chem. Phys., 1972, 57, 4821. [all data]

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]

Bottcher, Cravens, et al., 1975
Bottcher, C.; Cravens, T.C.; Dalgarno, A., Collision broadening and relaxation of the resonance lines of lithium and sodium in helium gas, Proc. R. Soc. London A, 1975, 346, 157. [all data]

Krauss, Maldonado, et al., 1971
Krauss, M.; Maldonado, P.; Wahl, A.C., Interaction energy curves of LiHe and NaHe (X2«SIGMA»+, A2«PI», B2«SIGMA»+) and X1«SIGMA»+ ions, J. Chem. Phys., 1971, 54, 4944. [all data]

Schneiderman and Michels, 1965
Schneiderman, S.B.; Michels, H.H., Quantum-mechanical studies of several helium-lithium interaction potentials, J. Chem. Phys., 1965, 42, 3706. [all data]

Bottcher, Dalgarno, et al., 1973
Bottcher, C.; Dalgarno, A.; Wright, E.L., Collision-induced absorption in alkali-metal-atom-inert-gas mixtures, Phys. Rev. A: Gen. Phys., 1973, 7, 1606. [all data]

Gallagher, 1975
Gallagher, A., Noble-gas broadening of the Li resonance line, Phys. Rev. A: Gen. Phys., 1975, 12, 133. [all data]


Notes

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