Convergent variational calculation of positronium-hydrogen-atom scattering lengths

Abstract

We present a convergent variational basis-set calculational scheme for elastic scattering of positronium atom by hydrogen atom in S wave. Highly correlated trial functions with appropriate symmetry are needed for achieving convergence. We report convergent results for scattering lengths in atomic units for both singlet ($=3.49\pm 0.20$) and triplet ($=2.46\pm 0.10$) states.

11 pages, 1 postscript figure, Accepted in J. Phys. B (Letter)

References in corpus (1)

• Positronium atom scattering by H_2 in a coupled-channel framework

Cited by in corpus (5)

• o-Positronium scattering off H and He
• Effect of H${}^{-}$ ion formation on Positronium-Hydrogen elastic scattering
• Variational calculation of positronium-helium-atom scattering length
• Positronium scattering by atoms and molecules at low energies
• The elastic collision of two H-like atoms including the exotic Ps and Mu