Indexing based on know structure (orientation determination) is
performed by a program
called KiKoCh2. The results of orientation determination are
influenced by the position of the pattern center and by the value of
sample to detector distance (camera length). After the indexing, its
correctness needs to be verified
by simulating the pattern.
This version of the program is also capable of ab initio indexing. For
that, one needs to mark a number of lines (as many as possible) and
click on the button"Ab initio indexing" in "Settings/Lattice
parameters". Ab initio indexing is performed using
"Ind_X". The program provides raw indexing results. The user is
responsible for getting the right symmetry, conventional unit cell, and
atomic positions. After the indexing, its correctness needs to be
verified
by simulating the pattern. In order to see the simulated the
pattern (at this stage, with incorrect content of the cell), one needs
to increase 'Maximal Miller index' and 'Number of reflections', and
decrease 'Minimal intensity ratio' in 'Settings/Simulation'.
KSLStrain
