The parametric x radiation from thick Si single crystals with 0.5-5 mm thickness was investigated at an electron energy of 900 MeV. As the crystal thickness increased, both intensity and angular spread reached a plateau after their increase in the thin crystal region, resulting in more brilliant x rays than Feranchuk and Ivashin's prediction [J. Phys. (Paris) 46, 1981 (1985)] for thick crystals. This behavior is consistent with the incoherent model proposed in our previous paper [Phys. Rev. Lett. 70, 3247 (1993)].
ASJC Scopus subject areas
- Statistical and Nonlinear Physics
- Mathematical Physics
- Condensed Matter Physics
- Physics and Astronomy(all)