Brookhaven National Laboratory, Upton, New York 11973-5000.
J Xray Sci Technol. 1994 Jan 1;4(4):247-62. doi: 10.3233/XST-1994-4401.
Coherent x rays can be produced by scattering of laser light by a beam of relativistic electrons, provided that the electron beam is density modulated or the scattering is done at, or near, 90°. Since the coherent scattering is proportional to N2, where N is the number of electrons, and the incoherent scattering is proportional to N, also a modest degree of coherence can substantially increase the x-ray yield. The theory of laser-electron-beam scattering is reviewed and compared with the emission of radiation by an electron beam in an undulator. Examples of the practical implementation of an intense source of coherent x rays are discussed.
相干 X 射线可以通过激光束对相对论电子束的散射产生，前提是电子束密度调制或散射在或接近 90°处进行。由于相干散射与 N2 成正比，其中 N 是电子的数量，而非相干散射也与 N 成正比，因此适度的相干性也可以大大增加 X 射线的产率。本文回顾了激光电子束散射的理论，并与电子束在波荡器中发射辐射的理论进行了比较。还讨论了实现强相干 X 射线源的实际应用的例子。
