Positronic complexes with unnatural parity

Journal Article · Fri Jun 15 00:00:00 EDT 2007 · Physical Review. A

DOI:https://doi.org/10.1103/PHYSREVA.75.062505· OSTI ID:20991128

Bromley, M W. J.; Mitroy, J; Varga, K ^[1]

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1. Department of Physics and Computational Science Research Center, San Diego State University, San Diego, California 92182 (United States)

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 8.17x10{sup -4}, 4.42x10{sup -4}, 15.14x10{sup -4}, and 21.80x10{sup -4}, respectively. These states are constructed by first coupling the two electrons into a configuration which is predominantly {sup 3}P{sup 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{sup +}, e{sup -}, e{sup -}, e{sup +}) 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.

• OSTI ID: 20991128
• Journal Information: Physical Review. A, Vol. 75, Issue 6; Other Information: DOI: 10.1103/PhysRevA.75.062505; (c) 2007 The American Physical Society; Country of input: International Atomic Energy Agency (IAEA); ISSN 1050-2947
• Country of Publication: United States
• Language: English

Related Subjects

74 ATOMIC AND MOLECULAR PHYSICS
ANGULAR MOMENTUM
ANNIHILATION
AUTOIONIZATION
BINDING ENERGY
CONFIGURATION INTERACTION
ELECTRONS
HADRONIC ATOMS
HYDROGEN COMPOUNDS
LITHIUM COMPOUNDS
LITHIUM IONS
MOLECULES
P WAVES
POSITRONIUM
POSITRONIUM COMPOUNDS
POSITRONS
RADIATIVE DECAY
SODIUM COMPLEXES
SYMMETRY
THREE-BODY PROBLEM
VARIATIONAL METHODS