Beyond the Point Ps Approximation [PDF]
Sergey V. Stepanov, Dmitry S. Zvezhinskiy, Vsevolod M. ByakovIn 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.View original: http://arxiv.org/abs/1203.5385
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