Electron affinities of opposite-parity bound states in Th-: Relativistic-configuration-interaction studies
Document Type
Article
Publication Date
1-1-1994
Abstract
Recent studies indicate that several bound states exist for some negative ions of the lanthanides. In this work we demonstrate that the second member of the actinide series, Th, also possesses multiple negative ion states below its ground state, consistent with the relatively high yield observed in the laboratory. Our valence space relativistic-configuration-interaction calculations predict the strongest bindings for Th- 6d27s27p J=2.5 and Th- 6d37s2 J=1.5 with electron affinities (EA) of 0.365 and 0.189 eV, respectively. We also expect certain weaker candidates to exist with (J, EA (eV)): (0.5(-),0.088), (1.5(-),0.075), (3.5(-),0.042), and (2.5(+),0.056), where =+ (-) corresponds to even (odd) parity states. © 1994 The American Physical Society.
Publication Title
Physical Review A
Recommended Citation
Datta, D.,
&
Beck, D.
(1994).
Electron affinities of opposite-parity bound states in Th-: Relativistic-configuration-interaction studies.
Physical Review A,
50(2), 1107-1111.
http://doi.org/10.1103/PhysRevA.50.1107
Retrieved from: https://digitalcommons.mtu.edu/michigantech-p/9933