Positron annihilation in positronium hydrides

Journal Article · Tue Jul 01 04:00:00 EDT 1986 · Phys. Rev. A; (United States)

DOI:https://doi.org/10.1103/PhysRevA.34.609· OSTI ID:5571726

Ho, Y K

The two-photon annihilation rate for positronium hydride is calculated with the use of extensive Hylleraas-type wave functions in which all six interparticle coordinates are used. The binding energy against dissociation into a positronium atom and a hydrogen atom is improved upon the previous best value by about 3.8%. The two-photon annihilation rate, calculated with a wave function that gives a positron-electron cusp value of -0.492a-italic/sub 0//sup -1/ (compared with the exact value of -0.5a-italic/sub 0//sup -1/), is determined as 2.459 nsec/sup -1/.

• Research Organization: Department of Physics and Astronomy, Louisiana State University, Baton Rouge, Louisiana 70803-4001
• OSTI ID: 5571726
• Journal Information: Phys. Rev. A; (United States), Journal Name: Phys. Rev. A; (United States) Vol. 34:1; ISSN PLRAA
• Country of Publication: United States
• Language: English

Related Subjects

640303* -- Atomic
Molecular & Chemical Physics-- Positronium
Muonium
& Muonic & Mesic Atoms & Molecules
74 ATOMIC AND MOLECULAR PHYSICS
ANNIHILATION
BASIC INTERACTIONS
BINDING ENERGY
BOUND STATE
CORRELATIONS
ELECTROMAGNETIC INTERACTIONS
ELECTRON CORRELATION
ENERGY
FUNCTIONS
HYDRIDES
HYDROGEN COMPOUNDS
INTERACTIONS
POSITRONIUM COMPOUNDS
WAVE FUNCTIONS