channeled particle
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scholarly journals Annihilation of relativistic positrons in single crystal with production of one photon

2015 ◽  
Vol 30 (22) ◽  
pp. 1550137 ◽  
Author(s):  
N. P. Kalashnikov ◽  
E. A. Mazur ◽  
A. S. Olczak
Keyword(s):  
Conservation Laws ◽  
Single Crystal ◽  
Single Photon ◽  
Momentum Conservation ◽  
Transverse Motion ◽  
Annihilation Process ◽  
Channeled Particle ◽  
Energy And Momentum ◽  
Photon Annihilation

The energy and momentum conservation laws prohibit positron–electron single-photon annihilation in vacuum. It is shown that the situation is different in a single crystal with one of the leptons (e.g. positron) moving in the channeling (or in the quasi-channeling) mode. The transverse motion of an oriented or channeled particle may sharply increase the probability of the single-photon annihilation process.

Multiphoton transitions for a channeled particle interacting with a strong electromagnetic wave

1995 ◽  
Vol 206 (3-4) ◽  
pp. 141-145 ◽  
Author(s):  
H.K. Avetissian ◽  
K.Z. Hatsagortsian ◽  
G.F. Mkrtchian ◽  
Kh.V. Sedrakian
Keyword(s):  
Electromagnetic Wave ◽  
Strong Electromagnetic Wave ◽  
Channeled Particle
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