The Experts below are selected from a list of 264 Experts worldwide ranked by ideXlab platform
I V Zheleznov - One of the best experts on this subject based on the ideXlab platform.
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Terahertz superradiance of an extended electron bunch moving in an oversized Corrugated cylindrical waveguide
2015 40th International Conference on Infrared Millimeter and Terahertz waves (IRMMW-THz), 2015Co-Authors: N S Ginzburg, I V Zotova, I V Zheleznov, A M Malkin, A. S. Sergeev, M. I. YalandinAbstract:Summary form only given. We consider superradiance from an extended relativistic electron bunch moving in a periodically Corrugated cylindrical waveguide for the generation of multi-megawatt terahertz pulses. To study this process, we have developed a self-consistent, quasi-optical theory which includes a description of the formation of evanescent wave near a Corrugated Surface and its excitation by RF current induced in the electron bunch.
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Wave Propagation in Oversized Planar Waveguides with Weakly Corrugated Surface
Journal of Communications Technology and Electronics, 2014Co-Authors: N S Ginzburg, A M Malkin, I V Zheleznov, V. Yu. Zaslavskii, E. R. KocharovskayaAbstract:Dispersion characteristics of waves propagating in oversized planar waveguides with periodically Corrugated Surface are analyzed under the assumption of small depth of corrugations. Such waveguides are widely used in relativistic electronics as slow-wave structures in various versions of Cherenkov oscillators and amplifiers with straight beams. It is shown that, if the waveguide is highly oversized, Surfaces waves having regular structure along the normal coordinate are formed. For only slightly oversized waveguides, limiting passage to earlier theoretical models in which the transverse field structure coincides with one of bulk modes of a regular waveguide is traced.
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Stimulated Cherenkov radiation of a relativistic electron beam moving over a periodically Corrugated Surface (quasi-optical theory)
Journal of Experimental and Theoretical Physics, 2013Co-Authors: N S Ginzburg, I V Zheleznov, A M Malkin, V. Yu. Zaslavsky, A. S. SergeevAbstract:The propagation of waves over periodically Corrugated Surfaces and their excitation by relativistic electron beams are investigated within the framework of a quasi-optical approach. The dispersion equation is derived for normal waves under the assumption of a small (in the scale of the period and wavelength) corrugation depth, based on which two limiting cases are identified. In the first limiting case, the wave frequency is far from the Bragg resonance, and the propagation of waves can be described in terms of the impedance approximation, in which the fundamental spatial harmonic slows down. In the second limiting case realized at frequencies close to the Bragg resonance, the field is represented as two counterpropagating quasi-optical wave beams coupled on a Corrugated Surface and forming a normal Surface wave. When interacting with an electron beam, convective instability, which can be used to realize amplifier regimes, corresponds to the first case, and absolute one, which is applied in Surface-wave oscillators, corresponds to the second case. The developed theory is used to determine basic characteristics of amplifier and oscillator schemes: the growth rates, the energy exchange efficiency, and the formation of a self-consistent spatial structure of the radiated field. The practical realization of relativistic submillimeter amplifiers and Surface-wave oscillators is shown to hold promise.
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evanescent waves propagation along a periodically Corrugated Surface and their amplification by relativistic electron beam quasi optical theory
Physics of Plasmas, 2013Co-Authors: N S Ginzburg, I V Zheleznov, A M Malkin, A S SergeevAbstract:By using a quasi-optical approach, we study propagation of evanescent waves along a periodically Corrugated Surface and their excitation by relativistic electron beams. Under assumption of a shallow (in the scale of period) corrugation, the dispersion equation for normal waves is derived and two particular cases are studied. In the first case, the wave frequency is far from the Bragg resonance; therefore, the evanescent wave propagation can be described by using the impedance approximation with deceleration of the zeroth spatial harmonic. The second case takes place at the frequencies close to the Bragg resonance. There, the field can be represented as two counter-propagating quasi-optical wave beams, which are coupled on the Corrugated Surface and form an evanescent normal wave. With regard to the interaction with an electron beam, the first case corresponds to the convective instability that can be used for amplification of radiation, while the second case corresponds to the absolute instability used in Surface-wave oscillators. This paper is focused on studying main features of amplifier schemes, such as the increments, electron efficiency, and formation of a self-consistent spatial structure of the radiated field. For practical applications, the feasibility of realization of relativistic Surface-wave amplifiers in the submillimeter wavelength range is estimated.By using a quasi-optical approach, we study propagation of evanescent waves along a periodically Corrugated Surface and their excitation by relativistic electron beams. Under assumption of a shallow (in the scale of period) corrugation, the dispersion equation for normal waves is derived and two particular cases are studied. In the first case, the wave frequency is far from the Bragg resonance; therefore, the evanescent wave propagation can be described by using the impedance approximation with deceleration of the zeroth spatial harmonic. The second case takes place at the frequencies close to the Bragg resonance. There, the field can be represented as two counter-propagating quasi-optical wave beams, which are coupled on the Corrugated Surface and form an evanescent normal wave. With regard to the interaction with an electron beam, the first case corresponds to the convective instability that can be used for amplification of radiation, while the second case corresponds to the absolute instability used in...
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3d quasioptical theory of terahertz superradiance of an extended electron bunch moving over a Corrugated Surface
Physical Review Letters, 2013Co-Authors: N S Ginzburg, A M Malkin, A S Sergeev, I V Zotova, Yu V Zaslavsky, I V ZheleznovAbstract:: We consider the superradiance of an extended relativistic electron bunch moving over a periodically Corrugated Surface for the generation of multimegawatt terahertz pulses. To study the above process we have developed a three-dimensional, self-consistent, quasioptical theory of Cherenkov stimulated emission which includes a description of the formation of an evanescent wave over a Corrugated Surface and its excitation by rf current induced in the electron bunch.
A S Sergeev - One of the best experts on this subject based on the ideXlab platform.
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evanescent waves propagation along a periodically Corrugated Surface and their amplification by relativistic electron beam quasi optical theory
Physics of Plasmas, 2013Co-Authors: N S Ginzburg, I V Zheleznov, A M Malkin, A S SergeevAbstract:By using a quasi-optical approach, we study propagation of evanescent waves along a periodically Corrugated Surface and their excitation by relativistic electron beams. Under assumption of a shallow (in the scale of period) corrugation, the dispersion equation for normal waves is derived and two particular cases are studied. In the first case, the wave frequency is far from the Bragg resonance; therefore, the evanescent wave propagation can be described by using the impedance approximation with deceleration of the zeroth spatial harmonic. The second case takes place at the frequencies close to the Bragg resonance. There, the field can be represented as two counter-propagating quasi-optical wave beams, which are coupled on the Corrugated Surface and form an evanescent normal wave. With regard to the interaction with an electron beam, the first case corresponds to the convective instability that can be used for amplification of radiation, while the second case corresponds to the absolute instability used in Surface-wave oscillators. This paper is focused on studying main features of amplifier schemes, such as the increments, electron efficiency, and formation of a self-consistent spatial structure of the radiated field. For practical applications, the feasibility of realization of relativistic Surface-wave amplifiers in the submillimeter wavelength range is estimated.By using a quasi-optical approach, we study propagation of evanescent waves along a periodically Corrugated Surface and their excitation by relativistic electron beams. Under assumption of a shallow (in the scale of period) corrugation, the dispersion equation for normal waves is derived and two particular cases are studied. In the first case, the wave frequency is far from the Bragg resonance; therefore, the evanescent wave propagation can be described by using the impedance approximation with deceleration of the zeroth spatial harmonic. The second case takes place at the frequencies close to the Bragg resonance. There, the field can be represented as two counter-propagating quasi-optical wave beams, which are coupled on the Corrugated Surface and form an evanescent normal wave. With regard to the interaction with an electron beam, the first case corresponds to the convective instability that can be used for amplification of radiation, while the second case corresponds to the absolute instability used in...
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3d quasioptical theory of terahertz superradiance of an extended electron bunch moving over a Corrugated Surface
Physical Review Letters, 2013Co-Authors: N S Ginzburg, A M Malkin, A S Sergeev, I V Zotova, Yu V Zaslavsky, I V ZheleznovAbstract:: We consider the superradiance of an extended relativistic electron bunch moving over a periodically Corrugated Surface for the generation of multimegawatt terahertz pulses. To study the above process we have developed a three-dimensional, self-consistent, quasioptical theory of Cherenkov stimulated emission which includes a description of the formation of an evanescent wave over a Corrugated Surface and its excitation by rf current induced in the electron bunch.
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Terahertz superradiance of an extended electron bunch propagating over a Corrugated Surface
Technical Physics Letters, 2012Co-Authors: N S Ginzburg, A M Malkin, A S Sergeev, I V Zotova, V. Yu. Zaslavskii, I V ZheleznovAbstract:We propose to generate high-power electromagnetic pulses by using the phenomenon of Cherenkov superradiance (SR) of extended electron bunches that propagate in free space over a Corrugated Surface. Both an analysis performed in the framework of a quasi-optical approximation and a direct particle-in-cell simulation demonstrate the possibility of generating multimegawatt picosecond pulses of radiation in the terahertz range using the proposed mechanism.
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Terahertz band superradaince of extended electron bunch moving above periodically Corrugated Surface
2012 Abstracts IEEE International Conference on Plasma Science, 2012Co-Authors: I V Zotova, N S Ginzburg, A M Malkin, A S Sergeev, Vladislav Yu. ZaslavskyAbstract:Summary form only given. Recently a significant progress has been achieved in generation of electromagnetic pulses in centimeter and millimeter waveband based on superradiance (SR) from high-current extended electron bunches formed by explosive emission cathodes [Korovin, S.D., et al., 2006]. Generated pulses are characterized by record-breaking (gigawatt) peak power and ultra-short (subnanosecond) duration. At particle energies up to 300 keV, current up to 1 kA and the bunch durations up to 1 ns the most effective mechanism of SR pulses generation is the Cherenkov one, when a rectilinearly moving electrons interacts with the backward wave propagating in a periodically Corrugated waveguide with period and diameter ~ λ. Advance of Cherenkov SR sources into short wave ranges needs fabrication of periodic micro- and nanostructures that can be fabricated based on modern technologies. Nevertheless in these wavebands waveguides with large oversized factor should be used, and process of SR needs special investigation.This report is devoted to the theoretical analysis of generation of high-power terahertz SR pulses by relativistic electron bunch moving above shallow Corrugated Surface and exciting an evanescent Surface wave. The formation of evanescent slow wave is described within the framework of a quasi-optical approach where the radiation field is presented as a sum of two partial counter-propagating wave-beams. It is shown that for generation of single THz pulse the particles energy should be increased up to 1-3 MeV and the bunch duration should be about several picoseconds. At present bunches formed by photo-injection guns provide the necessary characteristics [Power, J.G,2010]. The results of theoretical consideration are in a good agreement with direct PIC code simulations.
N S Ginzburg - One of the best experts on this subject based on the ideXlab platform.
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Terahertz superradiance of an extended electron bunch moving in an oversized Corrugated cylindrical waveguide
2015 40th International Conference on Infrared Millimeter and Terahertz waves (IRMMW-THz), 2015Co-Authors: N S Ginzburg, I V Zotova, I V Zheleznov, A M Malkin, A. S. Sergeev, M. I. YalandinAbstract:Summary form only given. We consider superradiance from an extended relativistic electron bunch moving in a periodically Corrugated cylindrical waveguide for the generation of multi-megawatt terahertz pulses. To study this process, we have developed a self-consistent, quasi-optical theory which includes a description of the formation of evanescent wave near a Corrugated Surface and its excitation by RF current induced in the electron bunch.
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Stimulated Cherenkov radiation of a relativistic electron beam moving over a periodically Corrugated Surface (quasi-optical theory)
Journal of Experimental and Theoretical Physics, 2013Co-Authors: N S Ginzburg, I V Zheleznov, A M Malkin, V. Yu. Zaslavsky, A. S. SergeevAbstract:The propagation of waves over periodically Corrugated Surfaces and their excitation by relativistic electron beams are investigated within the framework of a quasi-optical approach. The dispersion equation is derived for normal waves under the assumption of a small (in the scale of the period and wavelength) corrugation depth, based on which two limiting cases are identified. In the first limiting case, the wave frequency is far from the Bragg resonance, and the propagation of waves can be described in terms of the impedance approximation, in which the fundamental spatial harmonic slows down. In the second limiting case realized at frequencies close to the Bragg resonance, the field is represented as two counterpropagating quasi-optical wave beams coupled on a Corrugated Surface and forming a normal Surface wave. When interacting with an electron beam, convective instability, which can be used to realize amplifier regimes, corresponds to the first case, and absolute one, which is applied in Surface-wave oscillators, corresponds to the second case. The developed theory is used to determine basic characteristics of amplifier and oscillator schemes: the growth rates, the energy exchange efficiency, and the formation of a self-consistent spatial structure of the radiated field. The practical realization of relativistic submillimeter amplifiers and Surface-wave oscillators is shown to hold promise.
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evanescent waves propagation along a periodically Corrugated Surface and their amplification by relativistic electron beam quasi optical theory
Physics of Plasmas, 2013Co-Authors: N S Ginzburg, I V Zheleznov, A M Malkin, A S SergeevAbstract:By using a quasi-optical approach, we study propagation of evanescent waves along a periodically Corrugated Surface and their excitation by relativistic electron beams. Under assumption of a shallow (in the scale of period) corrugation, the dispersion equation for normal waves is derived and two particular cases are studied. In the first case, the wave frequency is far from the Bragg resonance; therefore, the evanescent wave propagation can be described by using the impedance approximation with deceleration of the zeroth spatial harmonic. The second case takes place at the frequencies close to the Bragg resonance. There, the field can be represented as two counter-propagating quasi-optical wave beams, which are coupled on the Corrugated Surface and form an evanescent normal wave. With regard to the interaction with an electron beam, the first case corresponds to the convective instability that can be used for amplification of radiation, while the second case corresponds to the absolute instability used in Surface-wave oscillators. This paper is focused on studying main features of amplifier schemes, such as the increments, electron efficiency, and formation of a self-consistent spatial structure of the radiated field. For practical applications, the feasibility of realization of relativistic Surface-wave amplifiers in the submillimeter wavelength range is estimated.By using a quasi-optical approach, we study propagation of evanescent waves along a periodically Corrugated Surface and their excitation by relativistic electron beams. Under assumption of a shallow (in the scale of period) corrugation, the dispersion equation for normal waves is derived and two particular cases are studied. In the first case, the wave frequency is far from the Bragg resonance; therefore, the evanescent wave propagation can be described by using the impedance approximation with deceleration of the zeroth spatial harmonic. The second case takes place at the frequencies close to the Bragg resonance. There, the field can be represented as two counter-propagating quasi-optical wave beams, which are coupled on the Corrugated Surface and form an evanescent normal wave. With regard to the interaction with an electron beam, the first case corresponds to the convective instability that can be used for amplification of radiation, while the second case corresponds to the absolute instability used in...
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The quasi-optical theory of Surface wave formation over structures with one- and two-dimensional periodic corrugations of a small depth
Journal of Communications Technology and Electronics, 2013Co-Authors: N S Ginzburg, V. Yu. Zaslavskii, A M Malkin, A. S. SergeevAbstract:One- and two-dimensional periodic structures with a corrugation depth small compared to the wavelength are considered. The electrodynamic characteristics of Surface waves formed over these structures are investigated within the framework of the quasi-optical approach. The radiation field is represented as a set of quasi-optical wave beams coupled on a Corrugated Surface. The results obtained on the basis of the averaged approach are compared with the results of direct simulation performed with the help of the CST Microwave Studio code.
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Quasi-optical theory of relativistic submillimeter Cherenkov amplifier and oscillators
2013 38th International Conference on Infrared Millimeter and Terahertz Waves (IRMMW-THz), 2013Co-Authors: N S Ginzburg, I V Zheleznov, A M Malkin, V. Yu. Zaslavsky, A. S. SergeevAbstract:Within the quasi-optical approach, we study evanescent waves propagation along a periodically Corrugated Surface and their excitation by a relativistic electron beam. The main features of amplifier and oscillators schemes are described including the increments, starting currents, electron efficiency and forming of self-consistent spatial structure of the radiation field. The feasibility of realization of relativistic Surface-wave devices in the submillimeter wavelength range is demonstrated.
A M Malkin - One of the best experts on this subject based on the ideXlab platform.
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Terahertz superradiance of an extended electron bunch moving in an oversized Corrugated cylindrical waveguide
2015 40th International Conference on Infrared Millimeter and Terahertz waves (IRMMW-THz), 2015Co-Authors: N S Ginzburg, I V Zotova, I V Zheleznov, A M Malkin, A. S. Sergeev, M. I. YalandinAbstract:Summary form only given. We consider superradiance from an extended relativistic electron bunch moving in a periodically Corrugated cylindrical waveguide for the generation of multi-megawatt terahertz pulses. To study this process, we have developed a self-consistent, quasi-optical theory which includes a description of the formation of evanescent wave near a Corrugated Surface and its excitation by RF current induced in the electron bunch.
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Stimulated Cherenkov radiation of a relativistic electron beam moving over a periodically Corrugated Surface (quasi-optical theory)
Journal of Experimental and Theoretical Physics, 2013Co-Authors: N S Ginzburg, I V Zheleznov, A M Malkin, V. Yu. Zaslavsky, A. S. SergeevAbstract:The propagation of waves over periodically Corrugated Surfaces and their excitation by relativistic electron beams are investigated within the framework of a quasi-optical approach. The dispersion equation is derived for normal waves under the assumption of a small (in the scale of the period and wavelength) corrugation depth, based on which two limiting cases are identified. In the first limiting case, the wave frequency is far from the Bragg resonance, and the propagation of waves can be described in terms of the impedance approximation, in which the fundamental spatial harmonic slows down. In the second limiting case realized at frequencies close to the Bragg resonance, the field is represented as two counterpropagating quasi-optical wave beams coupled on a Corrugated Surface and forming a normal Surface wave. When interacting with an electron beam, convective instability, which can be used to realize amplifier regimes, corresponds to the first case, and absolute one, which is applied in Surface-wave oscillators, corresponds to the second case. The developed theory is used to determine basic characteristics of amplifier and oscillator schemes: the growth rates, the energy exchange efficiency, and the formation of a self-consistent spatial structure of the radiated field. The practical realization of relativistic submillimeter amplifiers and Surface-wave oscillators is shown to hold promise.
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evanescent waves propagation along a periodically Corrugated Surface and their amplification by relativistic electron beam quasi optical theory
Physics of Plasmas, 2013Co-Authors: N S Ginzburg, I V Zheleznov, A M Malkin, A S SergeevAbstract:By using a quasi-optical approach, we study propagation of evanescent waves along a periodically Corrugated Surface and their excitation by relativistic electron beams. Under assumption of a shallow (in the scale of period) corrugation, the dispersion equation for normal waves is derived and two particular cases are studied. In the first case, the wave frequency is far from the Bragg resonance; therefore, the evanescent wave propagation can be described by using the impedance approximation with deceleration of the zeroth spatial harmonic. The second case takes place at the frequencies close to the Bragg resonance. There, the field can be represented as two counter-propagating quasi-optical wave beams, which are coupled on the Corrugated Surface and form an evanescent normal wave. With regard to the interaction with an electron beam, the first case corresponds to the convective instability that can be used for amplification of radiation, while the second case corresponds to the absolute instability used in Surface-wave oscillators. This paper is focused on studying main features of amplifier schemes, such as the increments, electron efficiency, and formation of a self-consistent spatial structure of the radiated field. For practical applications, the feasibility of realization of relativistic Surface-wave amplifiers in the submillimeter wavelength range is estimated.By using a quasi-optical approach, we study propagation of evanescent waves along a periodically Corrugated Surface and their excitation by relativistic electron beams. Under assumption of a shallow (in the scale of period) corrugation, the dispersion equation for normal waves is derived and two particular cases are studied. In the first case, the wave frequency is far from the Bragg resonance; therefore, the evanescent wave propagation can be described by using the impedance approximation with deceleration of the zeroth spatial harmonic. The second case takes place at the frequencies close to the Bragg resonance. There, the field can be represented as two counter-propagating quasi-optical wave beams, which are coupled on the Corrugated Surface and form an evanescent normal wave. With regard to the interaction with an electron beam, the first case corresponds to the convective instability that can be used for amplification of radiation, while the second case corresponds to the absolute instability used in...
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The quasi-optical theory of Surface wave formation over structures with one- and two-dimensional periodic corrugations of a small depth
Journal of Communications Technology and Electronics, 2013Co-Authors: N S Ginzburg, V. Yu. Zaslavskii, A M Malkin, A. S. SergeevAbstract:One- and two-dimensional periodic structures with a corrugation depth small compared to the wavelength are considered. The electrodynamic characteristics of Surface waves formed over these structures are investigated within the framework of the quasi-optical approach. The radiation field is represented as a set of quasi-optical wave beams coupled on a Corrugated Surface. The results obtained on the basis of the averaged approach are compared with the results of direct simulation performed with the help of the CST Microwave Studio code.
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Quasi-optical theory of relativistic submillimeter Cherenkov amplifier and oscillators
2013 38th International Conference on Infrared Millimeter and Terahertz Waves (IRMMW-THz), 2013Co-Authors: N S Ginzburg, I V Zheleznov, A M Malkin, V. Yu. Zaslavsky, A. S. SergeevAbstract:Within the quasi-optical approach, we study evanescent waves propagation along a periodically Corrugated Surface and their excitation by a relativistic electron beam. The main features of amplifier and oscillators schemes are described including the increments, starting currents, electron efficiency and forming of self-consistent spatial structure of the radiation field. The feasibility of realization of relativistic Surface-wave devices in the submillimeter wavelength range is demonstrated.
N S Ginzburg - One of the best experts on this subject based on the ideXlab platform.
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Wave Propagation in Oversized Planar Waveguides with Weakly Corrugated Surface
Journal of Communications Technology and Electronics, 2014Co-Authors: N S Ginzburg, A M Malkin, I V Zheleznov, V. Yu. Zaslavskii, E. R. KocharovskayaAbstract:Dispersion characteristics of waves propagating in oversized planar waveguides with periodically Corrugated Surface are analyzed under the assumption of small depth of corrugations. Such waveguides are widely used in relativistic electronics as slow-wave structures in various versions of Cherenkov oscillators and amplifiers with straight beams. It is shown that, if the waveguide is highly oversized, Surfaces waves having regular structure along the normal coordinate are formed. For only slightly oversized waveguides, limiting passage to earlier theoretical models in which the transverse field structure coincides with one of bulk modes of a regular waveguide is traced.
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3d quasioptical theory of terahertz superradiance of an extended electron bunch moving over a Corrugated Surface
Physical Review Letters, 2013Co-Authors: N S Ginzburg, A M Malkin, A S Sergeev, I V Zotova, Yu V Zaslavsky, I V ZheleznovAbstract:: We consider the superradiance of an extended relativistic electron bunch moving over a periodically Corrugated Surface for the generation of multimegawatt terahertz pulses. To study the above process we have developed a three-dimensional, self-consistent, quasioptical theory of Cherenkov stimulated emission which includes a description of the formation of an evanescent wave over a Corrugated Surface and its excitation by rf current induced in the electron bunch.
-
Terahertz superradiance of an extended electron bunch propagating over a Corrugated Surface
Technical Physics Letters, 2012Co-Authors: N S Ginzburg, A M Malkin, A S Sergeev, I V Zotova, V. Yu. Zaslavskii, I V ZheleznovAbstract:We propose to generate high-power electromagnetic pulses by using the phenomenon of Cherenkov superradiance (SR) of extended electron bunches that propagate in free space over a Corrugated Surface. Both an analysis performed in the framework of a quasi-optical approximation and a direct particle-in-cell simulation demonstrate the possibility of generating multimegawatt picosecond pulses of radiation in the terahertz range using the proposed mechanism.
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Terahertz band superradaince of extended electron bunch moving above periodically Corrugated Surface
2012 Abstracts IEEE International Conference on Plasma Science, 2012Co-Authors: I V Zotova, N S Ginzburg, A M Malkin, A S Sergeev, Vladislav Yu. ZaslavskyAbstract:Summary form only given. Recently a significant progress has been achieved in generation of electromagnetic pulses in centimeter and millimeter waveband based on superradiance (SR) from high-current extended electron bunches formed by explosive emission cathodes [Korovin, S.D., et al., 2006]. Generated pulses are characterized by record-breaking (gigawatt) peak power and ultra-short (subnanosecond) duration. At particle energies up to 300 keV, current up to 1 kA and the bunch durations up to 1 ns the most effective mechanism of SR pulses generation is the Cherenkov one, when a rectilinearly moving electrons interacts with the backward wave propagating in a periodically Corrugated waveguide with period and diameter ~ λ. Advance of Cherenkov SR sources into short wave ranges needs fabrication of periodic micro- and nanostructures that can be fabricated based on modern technologies. Nevertheless in these wavebands waveguides with large oversized factor should be used, and process of SR needs special investigation.This report is devoted to the theoretical analysis of generation of high-power terahertz SR pulses by relativistic electron bunch moving above shallow Corrugated Surface and exciting an evanescent Surface wave. The formation of evanescent slow wave is described within the framework of a quasi-optical approach where the radiation field is presented as a sum of two partial counter-propagating wave-beams. It is shown that for generation of single THz pulse the particles energy should be increased up to 1-3 MeV and the bunch duration should be about several picoseconds. At present bunches formed by photo-injection guns provide the necessary characteristics [Power, J.G,2010]. The results of theoretical consideration are in a good agreement with direct PIC code simulations.
