Resonant state and the ground state of positronium hydride

Journal Article · Mon May 01 04:00:00 EDT 1978 · Phys. Rev., A; (United States)

DOI:https://doi.org/10.1103/PhysRevA.17.1675· OSTI ID:6779220

Ho, Y K

The lowest-lying resonance occurring in S-wave positronium-hydrogen scattering is reinvestigated, used the complex-rotation method. By employing a generalized Hylleraas-type wave function that includes all six interparticle coordinates, a very accurate value of the resonance position E/sub r/ is obtained, along with a good value of the width. The present result for E/sub r/ (-1.205 +- 0.001 Ry) is lower than the previous result of Drachman and Houston, who omitted the interelectronic coordinate r/sub 12/ in their trial function. In addition, the lowest ground-state energy of positronium hydride is obtained by using 210 terms in the trial wave function. The effect of the r/sub 12/ coordinate and others on both the resonant energy and the binding energy of PsH is discussed.

• Research Organization: Theoretical Studies Group, NASA Goddard Space Flight, Center, Greenbelt, Maryland 20771
• OSTI ID: 6779220
• Journal Information: Phys. Rev., A; (United States), Journal Name: Phys. Rev., A; (United States) Vol. 17:5; 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
BINDING ENERGY
ENERGY
ENERGY LEVELS
GROUND STATES
HYDRIDES
HYDROGEN COMPOUNDS
PARTIAL WAVES
POSITRONIUM
POSITRONIUM COMPOUNDS
S WAVES