International
Tables for
Crystallography
Volume B
Reciprocal space
Edited by U. Shmueli

International Tables for Crystallography (2006). Vol. B, ch. 2.2, p. 217   | 1 | 2 |

Table 2.2.4.1 

C. Giacovazzoa*

aDipartimento Geomineralogico, Campus Universitario, I-70125 Bari, Italy
Correspondence e-mail: c.giacovazzo@area.ba.cnr.it

Table 2.2.4.1| top | pdf |
Moments of the distributions (2.2.4.4)[link] and (2.2.4.5)[link]

[R(E_{s})] is the percentage of n.s.f.'s with amplitude greater than the threshold [E_{s}].

CriterionCentrosymmetric distributionNoncentrosymmetric distribution
[\langle |E|\rangle] 0.798 0.886
[\langle |E|^{2}\rangle] 1.000 1.000
[\langle |E|^{3}\rangle] 1.596 1.329
[\langle |E|^{4}\rangle] 3.000 2.000
[\langle |E|^{5}\rangle] 6.383 3.323
[\langle |E|^{6}\rangle] 15.000 6.000
[\langle |E^{2} - 1|\rangle] 0.968 0.736
[\langle (E^{2} - 1)^{2}\rangle] 2.000 1.000
[\langle (E^{2} - 1)^{3}\rangle] 8.000 2.000
[\langle |E^{2} - 1|^{3}\rangle] 8.691 2.415
R(1) 0.320 0.368
R(2) 0.050 0.018
R(3) 0.003 0.0001