TWO-WAVELENGTH NEIGHBORHOOD PRINCIPLE OF TWO-PHASE STRUCTURE INVARIANTS | Zendy

Sun Hong-lin | Zendy; Gang Zhang | Zendy; GUO DONG-YAO | Zendy

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TWO-WAVELENGTH NEIGHBORHOOD PRINCIPLE OF TWO-PHASE STRUCTURE INVARIANTS

Author(s) -

Sun Hong-lin,

Gang Zhang,

GUO DONG-YAO

Publication year - 1989

Publication title -

acta physica sinica

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.199

H-Index - 47

ISSN - 1000-3290

DOI - 10.7498/aps.38.824

Subject(s) - simple (philosophy) , wavelength , phase (matter) , structured program theorem , computer science , mathematics , algorithm , statistical physics , pure mathematics , optics , physics , quantum mechanics , philosophy , epistemology

An approximate result of first neighborhood is given in ref [5] . In consideration of the importance of strict treatment about this problem, a new formula is derived. According to the computational comparision between the two formulas, it can be concluded that the approximate method in ref [5] is very simple, convenitnt and reliable. It is also concluded by adding random errors to the magnitudes of normalized structure factors that Hauptman's conclusion, namely, the two-phase structure invariants are only dependent on chemical composition and independent of the structure factors, is still correct in the two-wavelength case. Considering this fact, we suggest a fast computational method of the two-wavelength struc-ture invariants which may be useful in practical macrostructure crystallography.

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