Abstract
The polarization properties of backscattered radiation from a relativistic electron beam are analyzed. It is shown that the polarization state of the backscattered radiation is changed with respect to that of the incoming radiation whenever a transverse component is present in the velocity distribution of the electron beam. Changes of polarization properties are evaluated in order to serve as a diagnostic tool for electron-beam parameters relevant to the performance of free-electron lasers, namely the beam emittance and the wiggler parameter. A measurable dimensionless "depolarization parameter" is introduced which directly measures these two parameters.
| Original language | English |
|---|---|
| Pages (from-to) | 1923-1926 |
| Number of pages | 4 |
| Journal | Journal of Applied Physics |
| Volume | 69 |
| Issue number | 4 |
| DOIs | |
| State | Published - 1991 |