Beyond the Point Ps Approximation
arXiv:1203.5385 · doi:10.4028/www.scientific.net/MSF.733.7
Abstract
In application to positron annihilation spectroscopy, Ps atom is considered not as a point particle, but as a finite size e+ e- pair localized in a bubble-state in a medium. Variation of the internal Coulombic e+ -e- attraction vs. the bubble radius is estimated.