$\bar {\sf {H}}^{+}$ ion production from collisions between antiprotons and excited positronium: cross sections calculations in the framework of the GBAR experiment

摘要: In the framework of gravitational behaviour antihydrogen at rest (GBAR) experiment, cross sections for successive formation and from collisions between positronium (Ps) antiprotons ( ) have been computed in range 0?30?keV energy, using continuum distorted wave-final state theoretical model its three-body four-body formulations. The effect electronic correlations on total production has studied three different wave functions H? (the matter equivalent ). Ps excited states up to np?=?3, as well nh?=?4, investigated. results suggest that can be efficiently enhanced by either a fraction Ps(2p) 2?keV () beam or Ps(3d) with kinetic energy below 1?keV.