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RESEARCH PRODUCT
On the Line Shape of Backward Emitted Parametric X-Radiation
G. KubeW. LauthHartmut Backesubject
PhysicsCrystalCathode rayElectric potentialElectronRadiationSmall-angle scatteringAtomic physicsSingle crystalLine (formation)description
Parametric X radiation, emitted in opposite direction of an electron which traverses a semi infinite single crystal on a hypothetical straight trajectory, features a Lorentzian line shape with extremely narrow width. However, small angle scattering of the electron in the Coulomb potential of the crystal atoms results in a stochastic change of the electron direction. The latter leads to a line broadening which can be understood essentially as a stochastic frequency modulation of the exponentially damped wave train. The line shape has been calculated analytically by well known probabilistic methods. Results are quoted for various reflections of a silicon single crystal at an electron beam energy of 855 MeV.
| year | journal | country | edition | language |
|---|---|---|---|---|
| 2002-01-01 |