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Positronic complexes with unnatural parity

Bromley, Michael W. J., Mitroy, Jim and Varga, Kalman (2007). Positronic complexes with unnatural parity. Physical Review A (Atomic Molecular and Optical Physics),75(6):62505-1-62505-10.

Document type: Journal Article
Citation counts: Scopus Citation Count Cited 10 times in Scopus Article | Citations

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IRMA ID 80791673xPUB82
Title Positronic complexes with unnatural parity
Author Bromley, Michael W. J.
Mitroy, Jim
Varga, Kalman
Journal Name Physical Review A (Atomic Molecular and Optical Physics)
Publication Date 2007
Volume Number 75
Issue Number 6
ISSN 1094-1622   (check CDU catalogue open catalogue search in new window)
Scopus ID 2-s2.0-34347360684
Start Page 62505-1
End Page 62505-10
Total Pages 10
Place of Publication College Park, United States
Publisher American Physical Society
Field of Research 0202 - Atomic, Molecular, Nuclear, Particle and Plasma Physics
0204 - Condensed Matter Physics
0205 - Optical Physics
HERDC Category C1 - Journal Article (DEST)
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 x 10(-4), 4.42 x 10(-4), 15.14 x 10(-4), and 21.80 x 10(-4), respectively. These states are constructed by first coupling the two electrons into a configuration which is predominantly P-3(e), 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.
Keywords negative ion
bound state
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Additional Notes Copyright by the American Physical Society

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