Dynamic chaos phenomenon and coherent radiation accompanying high energy particle motion through crystals |
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| Authors: | A. I. Akhiezer V. I. Truten N. F. Shul'ga |
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| Affiliation: | Institute of Physics and Technology, Ukrainian SSR Academy of Sciences , Kharkov, 310108, USSR |
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| Abstract: | Abstract A crystal has a regular structure, therefore every motion in such a structure seems to be regular. However, it is not actually so and even in perfect crystals the particle motion may be either regular or chaotic. Everything depends on the number of integrals of motion determining a particle trajectory. The character of particle motion in a crystal, i.e. its regularity or chaoticity, affects many physical processes accompanying the particle motion through a crystal. In this paper we shall consider the effect of dynamic chaos on the coherent radiation of fast particles in a crystal. We also consider the validity conditions of coherent radiation theory results, the role of the second and higher Born approximations in the radiation theory of fast particles in crystals, the continuous string approximation in this theory, the coherent radiation in the model of random strings, and the multiple scattering effect on the coherent radiation. |
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