Beyond the Point Ps Approximation

Sergey V. Stepanov; Dmitry S. Zvezhinskiy; Vsevolod M. Byakov

doi:10.4028/www.scientific.net/MSF.733.7

Paper Titles

Preface, Committees and Sponsors

Positrons and Free Volume Related Issues in Polymeric Systems: A Sketch of Günter Dlubek's Contributions
p.1

Beyond the Point Ps Approximation
p.7

Effects of Local Heating and Premelting in the Terminal Part of the e⁺ Track
p.15

Towards the Positronium and Radiolytic Hydrogen Formation Mechanisms in Liquid Hydrocarbons
p.19

Testing of the Extended Tao-Eldrup Model on Porous VP-DVB Copolymers
p.24

Ps Bubble in Liquids
p.29

The Free Volume Dynamics
p.33

Study of Unbound HePs Using Exact Diagonalization Technique
p.38

HomeMaterials Science ForumMaterials Science Forum Vol. 733Beyond the Point Ps Approximation

Beyond the Point Ps Approximation

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-like state in a medium. It is shown that during transition from quasifree to localized state, variation of the internal Coulombic e⁺-e^- attraction energy (several eV) plays an important role, which may govern Ps localization process.