Channeling 2012

Session

S2-S5 Nouvel Sources: PXR&TR&FEL&Plasma

26 Sept 2012, 11:10

Alghero, Sardegna, Italy

116. Radiation induced by charged particles in optical fibers

Mr Xavier Artru (Université de Lyon, CNRS/IN2P3, IPNL)

26/09/2012, 11:10

Novel sources: PXR&TR&FEL&Plasma

The field of a charged particle passing trough or near an optical fiber induces a transient polarization of the fiber atoms. This polarization turns into radiation, part of which is channelled by the fiber. We call it particle-induced guided light (PIGL). PIGL can also be generated by a particle passing trough or near a metallic object stuck to the fiber. This occurs via surface...

5. Dynamic theory of coherent X-radiation of relativistic electron within a periodic layered medium in Bragg scattering geometry

Prof. Sergey Blazhevich (Belgorod State University)

26/09/2012, 11:40

Novel sources: PXR&TR&FEL&Plasma

In the present work the dynamic theory of the relativistic electron radiation in periodic layered structure is built in Bragg scattering geometry. The expression for spectral - angular distribution of the radiation is derived and the possibilities of the manifestation of dynamic diffraction effects in the radiation are shown for this scattering geometry.

15. Undulator radiation inside a dielctric waveguide

Mrs Anna Kotanjyan (Yerevan State University)

26/09/2012, 12:00

Novel sources: PXR&TR&FEL&Plasma

We investigate the radiation from a charge moving along a helix around a dielectric cylinder immersed in a homogeneous medium. We are mainly concerned with the radiation propagating inside the cylinder. The radiation intensity for the modes propagating inside the cylinder is evaluated by using the work done by the radiation field on the charge and by evaluating the energy flux through the...

61. Parametric gamma-radiation: parametric x-rays from relativistic electrons passing through a Mossbauer crystal

Prof. Alexander Lobko (Institute for Nuclear Problems, Belarus State University)

26/09/2012, 12:20

Novel sources: PXR&TR&FEL&Plasma

The possibility to apply PXR radiation mechanism to generate resonant gamma-rays for the Mossbauer experiments – parametric gamma-radiation (PGR) – was suggested quite ago, but experimental conditions for its observation were not discussed before. Besides, the interference conditioned by the electron and nuclear contributions to PGR was not taken into account in the previous consideration. As...

24. Twisted electron in a strong laser wave

Dr Dmitry Karlovets (Tomsk polytechnic university)

26/09/2012, 12:40

Novel sources: PXR&TR&FEL&Plasma

It has recently been discovered theoretically [1] and proved experimentally [2] that free electrons can carry orbital angular momentum being as large as $m \sim 100 \hbar$ [3]. These \textit{twisted electrons} can be considered as massive analogs of the well-known \textit{twisted photons} whose Pointing vector rotates about the direction of their propagation. We consider such an electron with...