Artigo Acesso aberto

American Crystallographic Association single-crystal intensity project report

1967; Wiley; Volume: 22; Issue: 1 Linguagem: Inglês

10.1107/s0365110x67000015

ISSN

1600-8642

Autores

S. C. Abrahams, Leroy Alexander, Thomas C. Furnas, Walter C. Hamilton, J. Ladell, Y. Okaya, R. A. Young, A. Zalkin,

Tópico(s)

X-ray Diffraction in Crystallography

Resumo

The integrated intensity of every reflection in the (hhl) zone of calcium fluoride, within a radius of sin 0/2 = 1.00/~-1, has been measured diffractometrically in seven different laboratories.All participants in this project used the same ground sphere of calcium fluoride.A fixed effects analysis-of-variance model was used to investigate the seven scaled sets of structure amplitudes.Most sets contained IFI z values within five per cent of the probable true values.It is unlikely that any experiment measured IFI 2 values to better than two per cent.The largest systematic errors are scattering angle dependent.

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