二波近似

two-wave approximation

[目次：理論(電子の散乱／回折／結像)]

結晶に電子を入射したとき、入射波方向に進む一次波(透過波)と一つの格子面からのブラッグ反射波(回折波)の２つの波だけが結晶内に存在すると仮定して回折強度やTEM像を解釈する近似法。

"Two-wave approximation" is an approximation method to interpret the diffraction intensity and TEM image, which assumes the existence of only two waves in a crystal: a primary beam (transmitted wave) traveling in the incident-beam direction and a Bragg-reflected beam (diffracted wave) from one lattice plane.

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