Oct 5 – 10, 2014
Capri-Naples, Italy
Europe/Rome timezone

PS1-03: Single Photon Annihilation of Positrons in the Channeling Regime

Oct 6, 2014, 5:00 PM
1h 30m
Capri-Naples, Italy

Capri-Naples, Italy

Speaker

Prof. Nikolay Kalashnikov (National Research Nuclear University MEPhI (Moscow Engineering Physics Institute), Moscow, Russia)

Description

It is well known that the energy and momentum conservation laws forbid positron-electron annihilation, producing the single photon only. It can produce two photons in vacuum, or the process is possible with a participation of the third body. The situation can be essentially changed in a single crystal when one or the both leptons are moving in the channeling regime when the transverse motion of a particle is bound. It appears the possibility of the single photon positron-electron annihilation process, described by the Feynman diagram with the single vertex only. In this report we analyze the different configurations of the single photon positron-electron annihilation process when one or the both leptons are in channeling regime and outline the conditions when the one-photon process may be a source of the high energy gamma-radiation.

Primary author

Prof. Nikolay Kalashnikov (National Research Nuclear University MEPhI (Moscow Engineering Physics Institute), Moscow, Russia)

Co-author

Dr Andrei Olchak (National Research Nuclear University MEPhI (Moscow Engineering Physics Institute), Moscow, Russia)

Presentation materials

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