Channeling 2012

Session

S2.3 Channeling Radiation & Related Phenomena

27 Sept 2012, 09:00

Alghero, Sardegna, Italy

55. Observation of Undulator Radiation at Channeling of Electrons in Strained Layer Si-Ge Crystals at MAMI

Prof. Hartmut Backe (Institute for Nuclear Physics)

27/09/2012, 09:00

Channeling Radiation & Related Phenomena

Experiments have been performed at the Mainz Microtron MAMI to explore the radiation emission from a 4-period epitaxially grown strained layer Si-Ge undulator with a period length of 9.9 μm. Electron energies between 190 and 855 MeV have been chosen. In comparison with a flat silicon reference crystal, a broad excess yield around the theoretically expected photon energies between 0.036 and...

120. Crystal Undulators: from the Prediction to the Mature Simulations

Prof. Victor Tikhomirov (Research Institute for Nuclear Problems)

27/09/2012, 09:30

Channeling Radiation & Related Phenomena

The history of crystal undulator prediction is reminded, the method of simulation of the radiation from crystal undulators, based on both the realistic particle trajectory simulation and direct consistent integration of the general radiation formula, is outlined and a performance of possible crystal undulator constructions is simulated.

80. Recent Progress in the Theory of the Crystalline Undulator

Dr Andriy Kostyuk (FIAS & ITP. Frankfurt University, Germany)

27/09/2012, 09:50

Channeling Radiation & Related Phenomena

The present state-of-the-art synchrotron radiation sources are capable for emitting electromagnetic radiation in a wide frequency range up to soft X rays. Moving further, i.e. into hard X ray and gamma-ray band, requires new technologies. One of the most promising ideas is using the phenomenon of charged particle channeling in single crystals. A single crystal with periodically bent...

127. Simulation of planar channeling radiation spectra of relativistic electrons and positrons in single crystals base on Mathematica

Dr Behnam Azadegan (Hakim Sabzevari University)

27/09/2012, 10:10

Channeling Radiation & Related Phenomena

We present new Mathematica codes for simulation of planar channeling radiation spectra of relativistic electrons (positrons) channeled along major crystallographic planes of a diamond-structure single crystal. The programs are based on the quantum and classical theory of channeling radiation which have been successfully applied to study planar channeling.

92. Radiation Energy Loss of Relativistic Electrons at Axial and Planar Channeling in Tungsten Crystal

Dr Oleg Bogdanov (National Research Tomsk Polytechnic University & Laboratori Nazionali di Frascati)

27/09/2012, 10:30

Channeling Radiation & Related Phenomena

The results of computer simulation of electrons axial and planar channeling in thin tungsten crystal are presented. We calculated trajectories of relativistic electrons, spatial distributions and energy loss due to channeling radiation in the framework of classical electrodynamics using the computer code, developed by authors. Calculations are performed in connection with the experimental...