The generation of narrow ultrarelativistic beams of positrons (electrons) in the process of resonant photogeneration of pairs on nuclei in a strong electromagnetic field

Autor:	S P Roshchupkin, S S Starodub
Rok vydání:	2022
Předmět:	High Energy Physics - Phenomenology High Energy Physics - Phenomenology (hep-ph) Physics and Astronomy (miscellaneous) Astrophysics::High Energy Astrophysical Phenomena Physics::Accelerator Physics FOS: Physical sciences Instrumentation
DOI:	10.48550/arxiv.2205.14119
Popis:	The generation of narrow beams of high-energy positrons (electrons) in the process of resonant photogeneration of ultrarelativistic electron-positron pairs by high-energy gamma quanta in the field of the nucleus and a strong electromagnetic wave is theoretically predicted. It is shown that if the energy of the initial gamma quanta significantly exceeds the characteristic energy of the process, then ultrarelativistic positrons (for channel A) or electrons (for channel B) are emitted with energies very close to the energy of gamma quanta. Moreover, the resonant differential cross-section of such processes can exceed the corresponding differential cross-section without an external field by thirteen orders of magnitude. This effect makes it possible to obtain narrow beams of ultrarelativistic positrons (electrons) in strong electromagnetic fields with high probability. Comment: 15 pages, 8 figures
Databáze:	OpenAIRE
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