An experimental investigation of the atomic europium anion

作者: V T Davis , J S Thompson

DOI: 10.1088/0953-4075/37/9/015

关键词:

摘要: The electron affinity (EA) of europium has been measured using laser photodetachment spectroscopy. EA Eu(8S7/2) was determined to be 1.053 ± 0.025 eV. data also show that Eu− at least one bound excited state with binding energy 0.864 0.024 eV relative the ground atom. experimental results are consistent recent measurements lanthanide atoms whose anions predicted have [Xe](4fn 6p) (where n is odd) configurations.

参考文章(21)
A.A. Gribakina, G.F. Gribakin, V.K. Ivanov, The structure and photodetachment of the Yb− negative ion Physics Letters A. ,vol. 168, pp. 280- 284 ,(1992) , 10.1016/0375-9601(92)91132-B
Konstantin Dinov, Donald R. Beck, Debasis Datta, Electron affinities of six bound states of Ce- formed by attachment of 6p and 5d electrons to Ce. Physical Review A. ,vol. 50, pp. 1144- 1148 ,(1994) , 10.1103/PHYSREVA.50.1144
Steven G. Bratsch, Electron affinities of the lanthanides Chemical Physics Letters. ,vol. 98, pp. 113- 117 ,(1983) , 10.1016/0009-2614(83)87108-5
V T Davis, J S Thompson, Measurement of the electron affinity of praseodymium Journal of Physics B: Atomic, Molecular and Optical Physics. ,vol. 35, pp. L11- L14 ,(2002) , 10.1088/0953-4075/35/1/102
Bogdan M. Angelov, Electron affinities of the lanthanides Chemical Physics Letters. ,vol. 43, pp. 368- 369 ,(1976) , 10.1016/0009-2614(76)85321-3
M.A. Garwan, A.E. Litherland, M-J. Nadeau, X-L. Zhao, Lanthanide negative ion detection using accelerator mass spectrometry Nuclear Instruments & Methods in Physics Research Section B-beam Interactions With Materials and Atoms. ,vol. 79, pp. 631- 634 ,(1993) , 10.1016/0168-583X(93)95430-D
M-J. Nadeau, M.A. Garwan, X-L. Zhao, A.E. Litherland, A negative ion survey; towards the completion of the periodic table of the negative ions Nuclear Instruments & Methods in Physics Research Section B-beam Interactions With Materials and Atoms. ,vol. 123, pp. 521- 526 ,(1997) , 10.1016/S0168-583X(96)00749-5
S. H. Vosko, J. B. Lagowski, I. L. Mayer, J. A. Chevary, Theoretical study of even- and odd-parity states in La- and Ac-: Evidence for the uniqueness of La- Physical Review A. ,vol. 43, pp. 6389- 6392 ,(1991) , 10.1103/PHYSREVA.43.6389