Electronic spectroscopy and ionization potential of UO2 in the gas phase

被引：70
作者：
Han, JD [1 ]
Goncharov, V [1 ]
Kaledin, LA [1 ]
Komissarov, AV [1 ]
Heaven, MC [1 ]
机构：
[1] Emory Univ, Dept Chem, Atlanta, GA 30322 USA
来源：
JOURNAL OF CHEMICAL PHYSICS | 2004年 / 120卷 / 11期
关键词：
D O I：
10.1063/1.1647531
中图分类号：
O64 [物理化学（理论化学）、化学物理学];
学科分类号：
070304 ; 081704 ;
摘要：
The electronic spectroscopy of UO2 has been examined using multiphoton ionization with mass-selected detection of the UO2+ ions. Supersonic jet cooling was used to reduce the spectral congestion. Twenty-two vibronic bands of neutral UO2 were observed in the range from 17 400 to 32 000 cm(-1). These bands originated from the U(5fphi(u)7ssigma(g))O-2 X (3)Phi(2u) and (3)Phi(3u) states. The stronger band systems are attributed to metal-centered 7p<--7s transitions. Threshold ionization measurements were used to determine the ionization potentials of UO and. UO2. These were found to be higher than the values obtained previously from electron impact measurements but in agreement with the results of recent theoretical calculations. (C) 2004 American Institute of Physics.
引用
收藏
页码：5155 / 5163
页数：9
相关论文
共 32 条
  • [1] HIGH-TEMPERATURE PHOTOELECTRON-SPECTROSCOPY - A STUDY OF U, UO, AND UO2
    ALLEN, GC
    BAERENDS, EJ
    VERNOOIJS, P
    DYKE, JM
    ELLIS, AM
    FEHER, M
    MORRIS, A
    [J]. JOURNAL OF CHEMICAL PHYSICS, 1988, 89 (09) : 5363 - 5372
  • [2] QR-SCMEH-MO calculations on NdO and UO
    Boudreaux, EA
    Baxter, E
    [J]. INTERNATIONAL JOURNAL OF QUANTUM CHEMISTRY, 2002, 90 (02) : 629 - 633
  • [3] The quantum chemistry of d- and f-element complexes: From an approximate existence to functional happiness
    Bursten, BE
    Drummond, ML
    Li, J
    [J]. FARADAY DISCUSSIONS, 2003, 124 : 1 - 24
  • [4] Mass spectrometric measurement of the ionization energies and cross sections of uranium and plutonium oxide vapors
    Capone, F
    Colle, Y
    Hiernaut, JP
    Ronchi, C
    [J]. JOURNAL OF PHYSICAL CHEMISTRY A, 1999, 103 (50) : 10899 - 10906
  • [5] Chang Q, 2002, THESIS OHIO STATE U
  • [6] de Jong WA, 1999, J MOL STRUC-THEOCHEM, V458, P41, DOI 10.1016/S0166-1280(98)00347-9
  • [7] INFRARED-SPECTRA OF MATRIX-ISOLATED URANIUM OXIDE SPECIES .1. STRETCHING REGION
    GABELNIC.SD
    REEDY, GT
    CHASANOV, MG
    [J]. JOURNAL OF CHEMICAL PHYSICS, 1973, 58 (10) : 4468 - 4475
  • [8] INFRARED-SPECTRUM OF MATRIX-ISOLATED URANIUM OXIDE VAPOR SPECIES
    GABELNICK, SD
    REEDY, GT
    CHASANOV, MG
    [J]. CHEMICAL PHYSICS LETTERS, 1973, 19 (01) : 90 - 93
  • [9] INFRARED-SPECTRA OF MATRIX-ISOLATED URANIUM OXIDE SPECIES .2. SPECTRAL INTERPRETATION AND STRUCTURE OF UO3
    GABELNICK, SD
    REEDY, GT
    CHASANOV, MG
    [J]. JOURNAL OF CHEMICAL PHYSICS, 1973, 59 (12) : 6397 - 6404
  • [10] On the electronic structure of the UO2 molecule
    Gagliardi, L
    Roos, BO
    Malmqvist, PÅ
    Dyke, JM
    [J]. JOURNAL OF PHYSICAL CHEMISTRY A, 2001, 105 (46) : 10602 - 10606
1234