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提出了δ束入射到平面晶体时边界条件的处理方法,进而求得了δ束入射到平行平面板晶体时,布拉格情况的束流强度二维解析解。利用上述结果讨论了有限宽入射束的Fankuchen效应。
The method of processing the boundary condition when the δ-beam is incident on the plane crystal is proposed, and the two-dimensional analytic solution of the beam intensity in the Bragg case is obtained when the δ-beam is incident on the parallel plate crystal. Using the above results, we discuss the Fankuchen effect of a finite-width beam.