25–30 Sept 2016
Europe/Rome timezone
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STIMULATED RESONANCE RADIATION OF CHANNELING PARTICLES

26 Sept 2016, 18:40
1h

Speakers

Prof. Nikolay Kalashnikov (National Research Nuclear University Mephi) Sultan Dabagov (LNF)

Description

Stimulated Resonance Radiation of Channeling Particles 1,2,3 Dabagov S.B., 2 Kalashnikov N.P. 1 Laboratori Nazionale di Frascati, Istituto Nazionale di Fisica Nucleare, Italy. 2 National Research Nuclear University MEPhI (Moscow Engineering Physics Institute), Moscow, Russia. 3 RAS, P.N. Lebedev Physical Institute, Moscow, Russia Abstract. The motion of channeling particles in the accompanying coordinate system can be considered as an one-dimensional oscillator (in the case of planar channeling), or as a two-dimensional atom (in the case of axial channeling [1]). The transversal motion of the channeling particle is characterized by discrete spectrum. The occupation probability of transversal motion levels depends on the entrance angle of charged particle relative to the crystallographic axis [2-4]. Passing through the crystal charged channeling particle undergoes periodic action of the lattice atoms [5-7] with basic frequency ω= γ v/d, where d is the lattice constant, v and γ are the velocity and the Lorentz factor of the channeling particles [6]. If the frequency of an external periodic interference coincides with the frequency of the transition of the moving channeling particles from one quantized state of transversal motion in another, the resonant excitation of the channeling particles is possible, i.e. similar to the excitation of atomic electrons by the periodic field of monochromatic electromagnetic waves [8-9]. In the report the resonance conditions are discussed and the induced resonance radiation spectrum of channeled particles is analyzed. References 1. Baryshevskii V.G. Channeling, Radiation and Reactions in Single Crystal at High Energies. Minsk. University. (in Russian). 1982. 2. Vorobyov S. Channeling of electron beams. М.: Energoatomizdat. (in Russian). 1984. 3. Ryabov V. Channeling Effect. M.: Energoatomizdat. (in Russian). 1994. 4. Ohtsuki Y.-H. Charged beam interaction with solids. Taylor and Francis Ltd. London - New York 1983. 5. Ter-Mikaelyan M. High energy electromagnetic processes in condensed media. John Wiley and Sons,Inc., New York, 1972. 6. Kalashnikov N.P. Coherent Interactions of Charged Particles in Single Crystals. Harwood Academic Publishers. London-Paris-New York. 1988. 7. Ferretti B. Nuovo Cimento. 1950 v. 7. p. 1-17. Sulla bremsstrahlung nei cristalli. Nuovo Cimento. 1972. v. 7B. No. 2. p. 225-239. Multiple coherent bremsstrahlung of electrons in crystals. Nuovo Cimento. 1972. v. 9 B. p. 399-413. The reduction of the coherence area of high-energy electrons in passage through a crystal. 8. Berestetskii V. B., Lifshitz E. M., Pitaevskii L.P. Quantum Electrodynamics. Butterworth-Heinemann, 1982. 9. Akhiezer A.I., Shulga N.F. Electrodynamics in Matter at High Energies. Academic Publishers. Science. (in Russian). 1991.

Primary author

Prof. Nikolay Kalashnikov (National Research Nuclear University Mephi)

Co-author

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