ISSN:
1600-5724
Source:
Crystallography Journals Online : IUCR Backfile Archive 1948-2001
Topics:
Chemistry and Pharmacology
,
Geosciences
,
Physics
Notes:
The spatial correlation function C(x) calculated with the aid of the scattered intensity φ(b) is assumed to be sufficiently convergent for X ≥ L. L is the correlation range of the electron density. Then φ(b) and C(x) may be replaced by a trigonometrical progression φk = φ(k/2X), k = 1,2, 3,..., where X is the upper limit of integration of the Fourier representation of φ(b). C(x) may be determined from φk with the aid of a summation formula. For the non-measurable limit of the scattered intensity at zero angle φ(0) there exists a mathematical representation by the other values φk. The moments Cn of C(x) are also determined by the φk, particularly the radius of gyration and some characteristic quantities are given by rapidly convergent series.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1107/S0567739471000457
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