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VOLUME 70 (1999) | ISSUE 10 | PAGE 664
Subattosecond ( \leq 10^{-18} s) time measurements using coherent x-ray transition radiation
PACS: 29.27.Fh, 41.60.Cr.
The properties of the coherent x-ray transition radiation (CXTR) produced by intense, short electron beams microbunched in various devices, with periods corresponding to x-ray wavelengths ~ 0.02 — 1 nm and with modulation indices ~ 0.001 — 1, are investigated theoretically. The results of numerical calculations show that, just as in the case of incoherent and coherent transition radiation in the optical and microwave regions, CXTR can be used to study the microbunching processes and may thus find application for beam diagnostics in future x-ray FELs and advanced accelerator technology.