FORMATION OF RELATIVISTIC POSITRON ATOMS BY AXIALLY CHANNELED POSITRONS AND THEIR DECAY ON γ-RAYS

摘要

An analytical expression is received for the effective interaction potential of a fast charged particle with the ionic crystal CsCl near the direction of axis <100> as a function of the temperature of the medium. By numerical analysis it is shown that the effective potential of axial channeling of positrons along the axis <100> of negatively charged Cl~- ions practically doesn't depend on temperature of the media. The wavefunction and the energy spectrum of the localized state are investigated, and the possibility is proved for the formation of metastable, two-dimensional relativistic positron systems or the positron atoms (PA) i.e. bound state of positron in the present case with a negatively charged axis of ions. The problem of one-photon decay of PA is investigated and the possibilities of manipulation of PA by the external influences are analyzed.