Radiation Intensity Arising from the Interaction of a Relativistic Electron with Periodic Inhomogeneities of the Single Crystal Potential
https://doi.org/10.1134/S2304487X21050060
Abstract
The channeling effect is considered in the so-called accompanying reference system moving with the velocity equal to the longitudinal component of the channeled particle velocity. In such a system, particle motion is finite and similar to the vibrational motion in a one-dimensional potential (plane channeling) or the two-dimensional finite motion in the central field (axial channeling). For relativistic electrons, such motion can be considered both in quantum and classical approximations. In classical consideration, it is possible to calculate quite simply such important characteristics of motion and electromagnetic radiation as the intensity of the resulting electromagnetic radiation, its spectral characteristics, and characteristic times of electron energy loss. The characteristic lifetimes of quantum channeled states and the probability of transitions between them can be estimated using the results of the classical approach, whereas directly in the quantum approach, this can be done only numerically. The simplified analytical consideration is applied to calculate the spectral characteristics and radiation intensity, which accompanies the axial channeling electrons of GeV energies. It is shown that this mechanism can lead to the conversion of a significant part of the energy of the electron beam into high-energy gamma-ray photons when passing the oriented single crystal target about 1 cm thick.
Keywords
About the Authors
N. P. KalashnikovRussian Federation
115409
Moscow
A. S. Olchak
Russian Federation
115409
Moscow
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Review
For citations:
Kalashnikov N.P., Olchak A.S. Radiation Intensity Arising from the Interaction of a Relativistic Electron with Periodic Inhomogeneities of the Single Crystal Potential. Vestnik natsional'nogo issledovatel'skogo yadernogo universiteta "MIFI". 2021;10(5):385-389. (In Russ.) https://doi.org/10.1134/S2304487X21050060