Liquid X ray scattering sample cell

Abstract

The invention relates to a liquid X ray scattering sample cell. The liquid X ray scattering sample cell comprises a cell body provided with a cavity and a sample cell which is arranged inside the cell body and is open at the top. The cell body is internally provided with a separating plate, and a water inlet pipe and a water outlet pipe are respectively arranged at the two sides of the separating plate; and a mounting shaft is arranged on the side wall of the cell body, and the mounting shaft is connected with a diffractometer side angle head. The liquid X ray scattering sample cell can be applied to a synchrotron radiation X ray multicircle diffractometer experimental facility and also can meet the requirement of a portable temperature control liquid sample cell of a diffractometer in a laboratory, so that the problems that a liquid sample cannot be filled, the temperature is controlled and the liquid sample is convenient to carry when structural information of liquid is measured by adopting an X ray reflection method are solved; and the application range of a powder diffractometer in the research field of solution structures is expanded, and a necessary experiment foundation is laid for carrying out solution X ray scattering new method study.

Description

technical field [0001] The invention relates to the technical field of scattering experiments of liquid structures, in particular to a liquid X-ray scattering sample cell. Background technique [0002] Liquids have short-range order and long-range disorder. Therefore, its structure measurement should not only rely on modern diffraction experiment technology but also combine computer data processing technology. On the basis of the structure information obtained directly from the experiment, the spatial structure parameters such as the bond length, coordination number, and bond angle of the first and second coordination layers are calculated through theoretical models. The solution structure parameters and radial distribution function are not only the indispensable basis for the development of the two types of solution theories, the lattice model and the radial distribution function model, but also the research on the phase equilibrium and metastable phase equilibrium of the ...

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Problems solved by technology

Strictly speaking, the ordinary diffractometer light source is a divergent light source, and it is generally difficult to obtain an accurate radial distribution function for measured liquid scattering.

[0006] From the perspective of liquid scattering experiment sample storage, there are also methods of using capillary tubes to store liquid abroad, which are limited to liquid samples that are not affected by solubility and measured at room temperature.

[0007] Since all existing X-ray diffractometers are neither equipped with sample cells for liquid measurement, nor have corresponding liquid measurement programs and data processing software been installed

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