Beyond the Point Ps ApproximationPreprint English OPEN
Stepanov, Sergey V.; Zvezhinskiy, Dmitry S.; Byakov, Vsevolod M.; (2012)
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Subject: Physics - Chemical Physics | Condensed Matter - Other Condensed Matter
arxiv: Physics::Fluid Dynamics
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.