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Intensity of the wave diffracted from a perfect crystal

7 Intensity of the wave diffracted from a perfect crystal [Pg.69]

We now consider the amplitude of the wave diffracted from a perfect crystal in directions that differ slightly from the exact Bragg angle. This [Pg.69]

Therefore, for one unit cell, the diffracted amplitude becomes [Pg.70]

Here r is the position of the nth atom in the unit cell with respect to some arbitrarily chosen origin. We now express r as the sum of two vectors [Pg.70]

Because g is a reciprocal lattice vector and tj is a lattice vector in real space, g r is an integer hence, Eq, (3.46) becomes [Pg.71]



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Crystal perfection

Crystallization from

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Diffracted waves

Diffraction from a crystal

Diffraction intensity

Perfecting

Perfection

Perfectly

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Waves, The

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