System and method for reducing phase ambiguity of crystal structure factors
US6438205B1 · kind B1 · utility
Assignee
Inventor
Key dates
| Filing date | May 8, 2001 |
| Grant date | Aug 20, 2002 |
| Priority date | — |
| Expiry date | May 8, 2021 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01N23/20
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A method reduces the structure factor phase ambiguity corresponding to a selected reciprocal lattice vector. The method includes generating an original phase probability distribution corresponding to a selected structure factor phase of the selected reciprocal lattice vector. The original phase probability distribution includes a first structure factor phase ambiguity. The method further includes combining the original phase probability distribution with a plurality of phase probability distributions of a plurality of structure factor phases of other reciprocal lattice vectors using a phase equation or inequality. The phase equation or inequality defines a mathematical relationship between the selected structure factor phase of the selected reciprocal lattice vector and the plurality of structure factor phases of other reciprocal lattice vectors. The method further includes producing a resultant phase probability distribution for the selected structure factor phase of the selected reciprocal lattice vector. The resultant phase probability distribution includes a second structure factor phase ambiguity which is smaller than the first structure factor phase ambiguity.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.