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

(1) , (2)
1
2

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
Vignette du 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

Attribution - CC BY 4.0

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⟩
116 View
126 Download

Altmetric

Share

Gmail Facebook Twitter LinkedIn More