Resonant photodetachment of the positronium negative ion

Journal Article · Sun Mar 30 23:00:00 EST 1986 · Phys. Rev. Lett.; (United States)

DOI:https://doi.org/10.1103/PhysRevLett.56.1366· OSTI ID:5874093

Botero, J; Greene, C H

An adiabatic treatment in hyperspherical coordinates is used to predict the existence of resonant structures in Ps/sup -/ (Ps denotes positronium) photodetachment. This highly correlated system displays a weak series of narrow Feshbach resonances lying just below the Ps(n = 2) threshold, while a single strong shape resonance dominates the photodetachment spectrum above this threshold as in H/sup -/. Use of a ''prediagonalized'' representation of hyperspherical harmonics dramatically improves the convergence of the adiabatic calculation.

• Research Organization: Department of Physics and Astronomy, Louisiana State University, Baton Rouge, Louisiana 70803
• OSTI ID: 5874093
• Journal Information: Phys. Rev. Lett.; (United States), Journal Name: Phys. Rev. Lett.; (United States) Vol. 56:13; ISSN PRLTA
• Country of Publication: United States
• Language: English

Related Subjects

640302 -- Atomic
Molecular & Chemical Physics-- Atomic & Molecular Properties & Theory
640303* -- Atomic
Molecular & Chemical Physics-- Positronium
Muonium
& Muonic & Mesic Atoms & Molecules
74 ATOMIC AND MOLECULAR PHYSICS
ADIABATIC APPROXIMATION
ANIONS
AUTOIONIZATION
CHARGED PARTICLES
COORDINATES
CORRELATIONS
DATA
ELASTIC SCATTERING
ELECTRON CORRELATION
ENERGY
HYDROGEN IONS
HYDROGEN IONS 1 MINUS
INFORMATION
IONIZATION
IONS
NUMERICAL DATA
PHASE SHIFT
PHOTOIONIZATION
POSITRONIUM
POTENTIALS
RESONANCE
SCATTERING
SERIES EXPANSION
THEORETICAL DATA
THRESHOLD ENERGY