Zonal reflection conditions

Conditions de réflexion zonales (Fr). Condizioni di riflessione zonali </Font>(It)

Definition

The zonal reflection conditions are the general reflection conditions due to the presence of glide planes. The resulting conditions apply only to twodimensional sets of reflections, i.e. to reciprocal-lattice nets containing the origin (such as hk0, h0l, 0kl, hhl). For instance, for a glide plane parallel to (001):

type of reflection	reflection condition	glide vector	glide plane
0kl	k = 2 n	b/2	b
	l = 2 n	c/2	c
	k + l = 2 n	b/2 + c/2	n
	k + l = 4 n k, l = 2n	b/4 ± c/4	d

The zonal reflection conditions are listed in Table 2.2.13.2 of International Tables of Crystallography, Volume A.

See also

reflection conditions
Section 2.2.13 of International Tables of Crystallography, Volume A

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