Positronic complexes with unnatural parity

Bromley, M. W. J., Mitroy, J. and Varga, K. (2007) Positronic complexes with unnatural parity. Physical Review A - Atomic, Molecular, and Optical Physics, 75 6: 062505 -1-062505 -10. doi:10.1103/PhysRevA.75.062505

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Author Bromley, M. W. J.
Mitroy, J.
Varga, K.
Title Positronic complexes with unnatural parity
Journal name Physical Review A - Atomic, Molecular, and Optical Physics   Check publisher's open access policy
ISSN 1050-2947
1094-1622
Publication date 2007-06-01
Year available 2007
Sub-type Article (original research)
DOI 10.1103/PhysRevA.75.062505
Open Access Status File (Publisher version)
Volume 75
Issue 6
Start page 062505 -1
End page 062505 -10
Total pages 10
Place of publication College Park, MD, United States
Publisher American Physical Society
Language eng
Formatted abstract
The structure of the unnatural parity states of PsH, LiPs, NaPs, and KPs are investigated with the configuration interaction and stochastic variational methods. The binding energies (in hartree) are found to be 8.17×10−4, 4.42×10−4, 15.14×10−4, and 21.80×10−4, respectively. These states are constructed by first coupling the two electrons into a configuration which is predominantly 3Pe, and then adding a p-wave positron. All the active particles are in states in which the relative angular momentum between any pair of particles is at least L=1. The LiPs state is Borromean since there are no three-body bound subsystems (of the correct symmetry) of the (Li+, e, e, e+) particles that make up the system. The dominant decay mode of these states will be radiative decay into a configuration that autoionizes or undergoes positron annihilation.
Keyword Negative-Ion
Ground-State
Bound-State
Energies
Q-Index Code C1
Q-Index Status Provisional Code
Institutional Status Non-UQ
Additional Notes Article number 062505

Document type: Journal Article
Sub-type: Article (original research)
Collections: School of Mathematics and Physics
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