$\bar {\sf {H}}^{+}$ ion production from collisions between antiprotons and excited positronium: cross sections calculations in the framework of the GBAR experiment - CEA - Commissariat à l’énergie atomique et aux énergies alternatives Access content directly
Journal Articles New Journal of Physics Year : 2013

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

Abstract

In the framework of the gravitational behaviour of antihydrogen at rest (GBAR) experiment, cross sections for the successive formation of $\bar {\sf {H}}$ and $\bar {\sf {H}}^{+}$ from collisions between positronium (Ps) and antiprotons ( $\bar p$ ) have been computed in the range 0-30 keV $\bar p$ energy, using the continuum distorted wavefinal state theoretical model in its three-body and four-body formulations. The effect of the electronic correlations in $\bar {\sf {H}}^{+}$ on the total cross sections of $\bar {\sf {H}}^{+}$ production has been studied using three different wave functions for $\bar {\sf {H}}$ (the matter equivalent of $\bar {\sf {H}}^{+}$). Ps excited states up to n$_p$ = 3, as well as $\bar {\sf {H}}$ excited states up to n$_h$ = 4, have been investigated. The results suggest that the production of $\bar {\sf {H}}^{+}$ can be efficiently enhanced by using either a fraction of Ps(2p) and a 2 keV ($\bar p$) beam or a fraction Ps(3d) and antiprotons with kinetic energy below 1 keV
Fichier principal
Vignette du fichier
HalArticle1367-2630_15_9_095022.pdf (1.29 Mo) Télécharger le fichier
PDF Datastream.pdf (1.35 Mo) Télécharger le fichier
Origin Publisher files allowed on an open archive

Dates and versions

cea-00965025 , version 1 (08-04-2014)

Licence

Identifiers

Cite

P. Comini, P.A. Hervieux. $\bar {\sf {H}}^{+}$ ion production from collisions between antiprotons and excited positronium: cross sections calculations in the framework of the GBAR experiment. New Journal of Physics, 2013, 15, pp.095022. ⟨10.1088/1367-2630/15/9/095022⟩. ⟨cea-00965025⟩
124 View
148 Download

Altmetric

Share

Gmail Mastodon Facebook X LinkedIn More