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Uranium monoxide


Gas phase ion energetics data

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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 as indicated in comments:
LLK - S.G. Lias, R.D. Levin, and S.A. Kafafi
RDSH - H.M. Rosenstock, K. Draxl, B.W. Steiner, and J.T. Herron

Ionization energy determinations

IE (eV) Method Reference Comment
5.66EVALHuber and Herzberg, 1979LLK
5.6 ± 0.1EIRauh and Ackermann, 1974LLK
4.3 ± 1.5EIBlackburn and Danielson, 1972LLK
5.7 ± 0.4EIPattoret, Drowart, et al., 1968RDSH
5.72 ± 0.06EIMann, 1964RDSH
4.7 ± 0.6EIDeMaria, Burns, et al., 1960RDSH

Appearance energy determinations

Ion AE (eV) Other Products MethodReferenceComment
U+13.4OEIGingerich and Lee, 1964RDSH

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: K.P. Huber and G. Herzberg

Data collected through June, 1975

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 238U16O
StateTeomegaeomegaexeomegaeyeBealphaegammaeDebetaereTrans.nu00
Very weak band structure in emission from an arc; no measurements.
Gatterer, Junkes, et al., 1957
X [820.0] 1           

Notes

1IR spectrum of U16O in Ar matrix at 15 K Carstens, Gruen, et al., 1972, Gabelnick, Reedy, et al., 1973. For U18O at 776.3 cm-1. Derived constants for U16O are omegae = 825.0, omegaexe = 2.5.
2Thermochemical value (mass-spectrometry) Drowart, Pattoret, et al., 1967, Coppens, Smoes, et al., 1968, Pattoret, Drowart, et al., 1967.
3Electron impact appearance potential, average of two values Mann, 1964, Rauh and Ackermann, 1974.

References

Go To: Top, Gas phase ion energetics data, 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.

Huber and Herzberg, 1979
Huber, K.P.; Herzberg, G., Molecular Spectra and Molecular Structure. IV. Constants of Diatomic Molecules,, Van Nostrand Reinhold Co., 1979, ,1. [all data]

Rauh and Ackermann, 1974
Rauh, E.G.; Ackermann, R.J., First ionization potentials of some refractory oxide vapors, J. Chem. Phys., 1974, 60, 1396. [all data]

Blackburn and Danielson, 1972
Blackburn, P.E.; Danielson, P.M., Electron impact relative ionization cross sections fragmentation of U, UO, UO2, and UO3, J. Chem. Phys., 1972, 56, 6156. [all data]

Pattoret, Drowart, et al., 1968
Pattoret, A.; Drowart, J.; Smoes, S., Etudes thermodynamiques par spectrometrie de masse sur le systeme uranium-oxygene in Thermodyn. Nucl. Mater. Proc. Symp., 1967 Vienna, 1968, 613. [all data]

Mann, 1964
Mann, J.B., Ionization of U, UO, and UO2 by electron impact, J. Chem. Phys., 1964, 40, 1632. [all data]

DeMaria, Burns, et al., 1960
DeMaria, G.; Burns, R.P.; Drowart, J.; Inghram, M.G., Mass spectrometric study of gaseous molybdenum, tungsten, and uranium oxides, J. Chem. Phys., 1960, 32, 1373. [all data]

Gingerich and Lee, 1964
Gingerich, K.A.; Lee, P.K., Mass spectrometric study of the vaporization of uranium monophosphide, J. Chem. Phys., 1964, 40, 3520. [all data]

Gatterer, Junkes, et al., 1957
Gatterer, A.; Junkes, J.; Salpeter, E.W., Molecular spectra of metallic oxides, Specola Vaticana, Citta del Vaticano, 1957, 0. [all data]

Carstens, Gruen, et al., 1972
Carstens, D.H.W.; Gruen, D.M.; Kozlowski, J.F., Vibrational spectra of chemically sputtered uranium oxide molecules isolated in noble gas matrices, High Temp. Sci., 1972, 4, 436. [all data]

Gabelnick, Reedy, et al., 1973
Gabelnick, S.D.; Reedy, G.T.; Chasanov, M.G., The infrared spectrum of matrix-isolated uranium oxide vapor species, Chem. Phys. Lett., 1973, 19, 90. [all data]

Drowart, Pattoret, et al., 1967
Drowart, J.; Pattoret, A.; Smoes, S., Mass spectrometric studies of the vaporization of refractory compounds, Proc. Br. Ceram. Soc., 1967, 8, 67. [all data]

Coppens, Smoes, et al., 1968
Coppens, P.; Smoes, S.; Drowart, J., Mass spectrometric determination of the dissociation energy of the molecule BO, Trans. Faraday Soc., 1968, 64, 630. [all data]

Pattoret, Drowart, et al., 1967
Pattoret, A.; Drowart, J.; Smoes, S., Etudes thermodynamiques par spectrometrie de masse sur le systeme uranium-oxygene in Thermodynamics of nuclear materials (Proc. Symp. Thermodynamics, Vienna 1967), Publ. IAEA, Vienna, 1967, 613-636. [all data]


Notes

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