Difference between revisions of "Integral reflection conditions"

From Online Dictionary of Crystallography

m (See also: 6th edition of ITA)
m (Style edits to align with printed edition)
Line 48: Line 48:
==See also ==
==See also ==
*Section of ''International Tables of Crystallography, Volume A'', 6<sup>th</sup> edition
*Chapter of ''International Tables for Crystallography, Volume A'', 6th edition

Revision as of 14:11, 15 May 2017

Conditions de réflexion intégrales (Fr).


The integral reflections are the general reflection conditions due to the centring of cells. They are given in the table below:

Integral reflection conditions for centred lattices.
Centring type of cell Centring symbol
None Primitive P
R (rhombohedral axes)
h + k = 2n C-face centred C
k + l = 2n A-face centred A
l + h = 2n B-face centred B
h + k + l = 2n body centred I
h + k, h + l and

k + l = 2n or:
h, k, l all odd or all

even (‘unmixed’)
all-face centred F
h + k + l = 3n rhombohedrally

centred, obverse

setting (standard)
R (hexagonal axes)
hk + l = 3n rhombohedrally

centred, reverse

hk = 3n hexagonally centred H

See also

  • Chapter of International Tables for Crystallography, Volume A, 6th edition