Positronic Lithium, an Electronically Stable Li-{ital e}{sup + } Ground State

Journal Article · Sat Nov 01 00:00:00 EST 1997 · Physical Review Letters

DOI:https://doi.org/10.1103/PhysRevLett.79.4124· OSTI ID:564934

Ryzhikh, G G; Mitroy, J ^[1]

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1. Faculty of Science, Northern Territory University, Darwin NT 0909 (Australia)

Calculations of the positron-Li system were performed using the stochastic variational method, yielding a minimum energy of {minus}7.53208 hartree for the L=0 ground state. In contrast with previous calculations of this system, the system was found to be stable against dissociation into the Ps+Li{sup +} channel with a binding energy of 0.00217 hartree; it is therefore electronically stable. This is the first instance of a rigorous calculation predicting that it is possible to combine a positron with a neutral atom to form an electronically stable bound state. {copyright} {ital 1997} {ital The American Physical Society}

• OSTI ID: 564934
• Journal Information: Physical Review Letters, Vol. 79, Issue 21; Other Information: PBD: Nov 1997
• Country of Publication: United States
• Language: English

Related Subjects

66 PHYSICS
LITHIUM
BOUND STATE
POSITRONS
VARIATIONAL METHODS
GROUND STATES
DISSOCIATION
POLARIZATION
BINDING ENERGY
POSITRONIUM
PERTURBATION THEORY