Diffraction Radiation from Relativistic Particles

Потылицын, А. П.; Ryazanov, M. I.; Strikhanov, M.; Tishchenko, A. A.

doi:10.1007/978-3-642-12513-3

Cited by 94 publications

(124 citation statements)

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“…Here dWe dω is the radiation spectrum generated by a single electron, N is the bunch population, and F (ω) is the longitudinal bunch form factor which is defined as a Fourier transform of the longitudinal particle distribution in a bunch, ρ (ω) [9]. If the bunch has a Gaussian longitudinal profile, then:…”

Section: Theoretical Background a Coherent Radiationmentioning

confidence: 99%

“…moves through a hole in a screen) the generated DR propagates in two directions: along the particle trajectory -Forward Diffraction Radiation (FDR) and in the direction of specular reflection -Backward Diffraction Radiation (BDR), as it is shown in Fig.1. It is important to point out that for an ideally conducting screen BDR and FDR characteristics coincide [9]. For THz frequencies the approximation of an ideal conductor is very well suited.…”

Section: B Cdr Spatial Distributionmentioning

confidence: 99%

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Observation of the stimulated coherent diffraction radiation in an open resonator at LUCX facility

Aryshev

Araki

Fukuda

et al. 2014

Nuclear Instruments and Methods in Physics Research Section A:

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We present an initial test of a new type of a pre-bunched beam pumped free electron maser based on Stimulated Coherent Diffraction Radiation (SCDR) generated in an open resonator. An ultrafast Schottky Barrier Diode (time response < 1 ns) has enabled to investigate the properties of the radiation stored in the cavity as well as the intrinsic properties of the cavity itself. We observed a turn-by-turn SCDR generated by a multibunch beam. When the cavity length was exactly a half of the bunch spacing a clear resonance was observed. Moreover, turn-by-turn measurements revealed the cavity quality factor of 72.88, which was rather high for an open resonator in the wavelength range of 3 − 5 mm. An exponential growth of the photon intensity as a function of the number of bunches was also demonstrated.

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Section: Theoretical Background a Coherent Radiationmentioning

confidence: 99%

Section: B Cdr Spatial Distributionmentioning

confidence: 99%

Observation of the stimulated coherent diffraction radiation in an open resonator at LUCX facility

Aryshev

Araki

Fukuda

et al. 2014

Nuclear Instruments and Methods in Physics Research Section A:

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show abstract

“…This effect is important because it leads to the essential reduction of beam particle losses at modern colliders [2]. Another important example here is the so-called pre-wave zone effect in transition radiation and diffraction radiation of electron beams [3], which is of high importance for beam diagnostic techniques in modern accelerators [4]. We should note that these phenomena are directly related to the ultra-relativistic motion of particles.…”

Section: Introductionmentioning

confidence: 99%

Scattering of wave packets on atoms in the Born approximation

2015

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Laser photons carrying non-zero orbital angular momentum are known and exploited during the last twenty years. Recently it has been demonstrated experimentally that such (twisted) electrons can be produced and even focused to a subnanometer scale. Thus, twisted electrons emerge as a new tool in atomic physics. The state of a twisted electron can be considered as a specific wave packet of plane waves. In the present paper-I we consider elastic scattering of the wave packets of fast non-relativistic particles on a potential field. We obtain simple and convenient formulae for a number of events in such a scattering. The equations derived represent, in fact, generalization of the well-known Born approximation for the case when finite sizes and inhomogeneity of the initial packet should be taken into account. To illustrate the obtained results, we consider two simple models corresponding to scattering of a Gaussian wave packet on the Gaussian potential and on the hydrogen atom. The scattering of twisted electrons on atoms will be considered in the next paper-II.

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“…However, it is essential (see, for example, [42] and ref. in [43]) that in ultra relativistic case the size of the spatial region in the direction orthogonal to the particle velocity, which is responsible for coherent radiation emission, can significantly exceed the size of the corresponding region in longitudinal direction, which, as noted previously, is of the order of radiation wavelength.…”

Section: Transversal Coherencementioning

confidence: 99%

On the Mystery of the Interpulse Shift in the Crab Pulsar

Конторович¹,

Trofymenko²

2017

JPSA

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Abstract:A new mechanism of radiation emission in the polar gap of a pulsar is proposed. It is the curvature radiation emitted by positrons moving towards the surface of the neutron star along inclined magnetic field and reflected from the surface. Such radiation interferes with transition radiation emitted from the neutron star when positrons hit the surface. Proposed mechanism explains the mystery of the interpulse shift in the Crab pulsar at high frequencies discovered by Moffett and Hankins twenty years ago. We have found also reflected energy flux and spectrum, discussed coherence and disappearance of interpulse shift with increase of frequency.

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Diffraction Radiation from Relativistic Particles

Cited by 94 publications

References 0 publications

Observation of the stimulated coherent diffraction radiation in an open resonator at LUCX facility

Observation of the stimulated coherent diffraction radiation in an open resonator at LUCX facility

Scattering of wave packets on atoms in the Born approximation

On the Mystery of the Interpulse Shift in the Crab Pulsar

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