多重散乱

multiple scattering

[目次：理論(電子の散乱／回折／結像)]

入射電子が試料に進入していく過程で構成原子と次々に衝突し、試料から出て行くまでに多数回の衝突によって進行方向が変わっていく（散乱）現象。多重散乱のうち、弾性散乱(ブラッグ反射)による多重散乱を扱う動力学的回折理論は、入射波および回折波の強度を試料の厚さと散乱角の関数として与える。

When the incident electrons travel a specimen, these electrons strike the constituent atoms in the specimen many times until these electrons exit from the specimen and change their traveling direction. This (scattering) phenomenon is termed "multiple scattering." Among the theories related to multiple scattering, the dynamical diffraction theory, which treats multiple scattering due to elastic scattering (Bragg reflection), provides the intensities of the incident and diffracted waves as a function of specimen thickness and scattering angle.

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