It is shown that an elementary semi-quantitative approach explains essential features of the X-ray free-electron laser mechanism, in particular those of the gain and saturation lengths. Using mathematical methods and derivations simpler than complete theories, this treatment reveals the basic physics that dominates the mechanism and makes it difficult to realise free-electron lasers for short wavelengths. This approach can be specifically useful for teachers at different levels and for colleagues interested in presenting X-ray free-electron lasers to non-specialized audiences.
机构:
Univ Calif Los Angeles, Los Angeles, CA 90095 USA
SLAC Natl Accelerator Lab, Menlo Pk, CA 94025 USAUniv Calif Los Angeles, Los Angeles, CA 90095 USA
机构:
Univ Calif Los Angeles, Dept Phys & Astron, Los Angeles, CA 90095 USA
SLAC Natl Accelerator Lab, Menlo Pk, CA 94025 USAUniv Calif Los Angeles, Dept Phys & Astron, Los Angeles, CA 90095 USA
Pellegrini, C.
Marinelli, A.
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SLAC Natl Accelerator Lab, Menlo Pk, CA 94025 USAUniv Calif Los Angeles, Dept Phys & Astron, Los Angeles, CA 90095 USA