We have measured the temperature dependence of parametric x-ray radiation (PXR) from a Si single crystal bombarded by 900-MeV electrons. The radiation intensity is appreciably enhanced when the crystal is cooled to liquid-nitrogen temperature as compared with the case for room temperature. The enhancement factors are larger for the higher-order reflections and are quantitatively consistent with the assumption that the PXR intensities are proportional to the squared Debye-Waller factor.
ASJC Scopus subject areas
- Statistical and Nonlinear Physics
- Condensed Matter Physics
- Physics and Astronomy(all)
- Mathematical Physics