An empirical correction for absorption anisotropy

Acta Crystallogr A. 1995 Jan 1;51 ( Pt 1):33-8. doi: 10.1107/s0108767394005726.


A least-squares procedure is described for modeling an empirical transmission surface as sampled by multiple symmetry-equivalent and/or azimuth rotation-equivalent intensity measurements. The fitting functions are sums of real spherical harmonic functions of even order, ylm(-u0) + ylm(u1), 2 < or = l = 2n < or = 8. The arguments of the functions are the components of unit direction vectors, -u0 for the reverse incident beam and u1 for the scattered beam, referred to crystal-fixed Cartesian axes. The procedure has been checked by calculations against standard absorption test data.

Publication types

  • Research Support, U.S. Gov't, P.H.S.

MeSH terms

  • Anisotropy
  • Crystallization
  • Crystallography*
  • Mathematics
  • Software