Propagation of polarized high-energy photons in crystals
نویسندگان
چکیده
منابع مشابه
Propagation of polarized high-energy photons in crystals
The density matrix is obtained for short-wavelength photons passing through a medium. For sufficiently large thicknesses of a target this matrix is expressed by the forward scattering amplitude of a photon. For multi-GeV photons scattering via virtual e+ e− pairs is the most important process. Its amplitude in a crystal is calculated. The results obtained are used to find the optimal thicknesse...
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Radiation emitted by unpolarized high-energy electrons penetrating crystals may be linearly polarized. This occurs when the particle velocity makes an angle, with respect to some major crystal axis, being sufficiently larger than the axial-channelling angle. For such orientation, a complete description of spectral and polarization characteristics of the radiation is derived. At planar channelli...
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ژورنال
عنوان ژورنال: Nuclear Instruments and Methods in Physics Research Section B: Beam Interactions with Materials and Atoms
سال: 2001
ISSN: 0168-583X
DOI: 10.1016/s0168-583x(00)00319-0