An improved model-potential-free analysis of the structure factor obtained from a small-angle scattering: Acquisitions of the pair distribution function and the pair potential

Ken Ichi Amano, Ryosuke Sawazumi, Hiroshi Imamura, Tomonari Sumi, Kota Hashimoto, Kazuhiro Fukami, Haru Kitaoka, Naoya Nishi, Tetsuo Sakka

    Research output: Contribution to journalArticlepeer-review

    2 Citations (Scopus)

    Abstract

    Small-angle X-ray and neutron scatterings can measure the structure factor of dispersed particles (macromolecules or colloidal particles), which can estimate the pair distribution function and the pair potential between the particles. However, the assumption of a model pair potential is usually necessary in the estimations. Especially when the system condition is complicated, one cannot prepare a plausible model pair potential. Hence, we propose a model-potential-free method. The new method does not require the assumptions of rigid particle surface and random phase approximation unlike the conventional model-potential-free method.

    Original languageEnglish
    Pages (from-to)1017-1021
    Number of pages5
    JournalChemistry Letters
    Volume49
    Issue number9
    DOIs
    Publication statusPublished - Sep 2020

    Keywords

    • Nelder-Mead method
    • Power law
    • Statistical mechanics of simple liquids

    ASJC Scopus subject areas

    • Chemistry(all)

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