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Achieving grazing‐incidence ultra‐small‐angle X‐ray scattering in a laboratory setup
Author(s) -
Zheng Nan,
Yi Zhiyong,
Li Zhenzhen,
Chen Ran,
Lai Yuqing,
Men Yongfeng
Publication year - 2015
Publication title -
journal of applied crystallography
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.429
H-Index - 162
ISSN - 1600-5767
DOI - 10.1107/s1600576715001752
Subject(s) - collimated light , scattering , optics , grazing incidence small angle scattering , materials science , beam (structure) , dispersion (optics) , detector , small angle x ray scattering , sample (material) , incidence (geometry) , physics , laser , small angle neutron scattering , neutron scattering , thermodynamics
A grazing‐incidence sample stage was designed for realizing grazing‐incidence scattering measurements, especially in the ultra‐small‐angle regime, in a modified Xenocs Xeuss system in the laboratory. The designed sample stage, which is composed of four separate motorized positioning stages, allows the sample to be moved along four different directions to locate it in the proper position for scattering measurement. In an effort to realize grazing‐incidence ultra‐small‐angle scattering (GIUSAXS) measurements, both the separation of the collimation slit systems and the sample‐to‐detector distance have been lengthened. At a separation of the collimation slit systems of 2400 mm and a sample‐to‐detector distance of 6558 mm, the effective smallest scattering vector magnitude q min reaches 0.01 nm −1 . A colloidal crystalline thin film obtained from drying a polystyrene latex dispersion on silicon substrate was measured in the setup in GIUSAXS mode at different beam sizes. The resultant GIUSAXS patterns at smaller beam sizes reveal fine crystalline structures in the film.