Method for measuring X-ray scattering of liquid

A scattering measurement and X-ray technology, which is applied in the field of liquid structure scattering experiments, can solve the problems of not installing liquid measurement programs and data processing software, difficulty in obtaining radial distribution functions, and not equipped with sample cells for liquid measurement, etc., to achieve shortening Effect of measurement time, large scattering intensity, convenient absorption correction and polarization correction

CN103344658AInactive Publication Date: 2013-10-09QINGHAI INST OF SALT LAKES OF CHINESE ACAD OF SCI
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Publication Date
2013-10-09
Estimated Expiration
Not applicable · inactive patent

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Abstract

The invention relates to a method for measuring X-ray scattering of liquid. The method comprises the following steps of: (1) connecting a liquid X-ray scattering sample cell in which a to-be-tested liquid sample is arranged with a circulating constant-temperature water bath, fixing the sample cell on an infrared remote control sample table of an X-ray diffractometer; (2) adjusting a light path system through a remote control device / remote controller of the infrared remote control sample table according to a common operation method of a diffractometer light path system, so as to determine a proper position for installation of the sample cell; (3) adopting Mo Kalpha as a radiation source and a super detector receiving system to carry out piecewise overlapping measurement in an X-ray scattering test measurement; and (4) carrying out data treatment and calculation, namely adopting universal Origin program on all data obtained by the measured liquid sample, firstly, correcting the data, secondly, carrying out normalization and calculating a scale factor by combining an integral method with an angle method, and finally providing relevant parameters describing a liquid space structure by calculation. The method can be applied to liquid scattering measurement experiment and data analysis; and the measurement time is effectively shortened.
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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 measurement method. Background technique

[0002] Liquids have short-range order and long-range disorder. Therefore, its structure measurement should not only rely on modern scattering 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 o...

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Embodiment Construction

[0043] Liquid X-ray scattering measurement method, comprising the following steps:

[0044] ⑴Connect the liquid X-ray scattering sample cell with the built-in liquid sample to be measured to a circulating constant temperature water bath with a temperature of 20°C±0.5°C~75°C±0.5°C, and then fix the liquid X-ray scattering sample cell to the X'Pert Pro θ- On the infrared remote control sample stage of the θ-type X-ray diffractometer; the sample stage can move along the x, y, z three-dimensional space by means of the infrared remote control.

[0045] Wherein: the liquid X-ray scattering sample cell includes a cell body 1 with a cavity and a sample cell 2 with a top opening in the cell body 1 (see Figure 1~3 ). The tank body 1 is provided with a partition 3, and the two sides of the partition 3 are respectively provided with a water inlet pipe 4 and a water outlet pipe 5; the side wall of the pool body 1 is provided with a mounting shaft 6, and the installation shaft 6 is connec...