A Hot Stage for Small Angle Scattering Experiments

A small-angle scattering and experimental technology, used in material analysis, measurement devices, instruments, etc. using wave/particle radiation, which can solve problems such as hindering neutrons, X-ray transmission, inability to use neutrons, and large volume.

Inactive Publication Date: 2017-08-18
INST OF NUCLEAR PHYSICS & CHEM CHINA ACADEMY OF
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

The usual heating method transfers heat to the sample through the heating sheet, but the heating sheet will hinder the transmission of neutrons and X-rays
[0004] Chinese patent (publication number: CN101113954A) titled "micro-heating stage and sample cell for volatile lava Raman spectroscopy measurement" and a Chinese patent (publication number: CN 103596304A) both disclose a heat stage for scientific experiments, but these two heat stages cannot be used for precise neutron and X-ray small-angle scattering due to the requirements of the application direction, or they are only used in Raman spectroscopy measurement, or they are large in size. In experiment

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  • A Hot Stage for Small Angle Scattering Experiments
  • A Hot Stage for Small Angle Scattering Experiments

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Experimental program
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Effect test

Embodiment 1

[0024] figure 1 It is the cross-sectional view of the hot stage used for the small angle scattering experiment of the present invention, figure 2 for figure 1 A-A partial cross-sectional view in. exist figure 1 , figure 2 Among them, a kind of hot stage used for small angle scattering experiment of the present invention contains air inlet channel 1, sealing window 2, light-transmitting window 5, exhaust channel 6, heating layer encapsulation wall 7, heating layer 8, sample chamber 9, sample The fixture layer 10, its connection relationship is that the heating stage is cylindrical, and the annular sample fixture layer 10, the sample chamber 9, the heating layer 8, and the heating layer packaging wall 7 are sequentially arranged on the central axis from the inside to the outside. . The two ends of the sample chamber 9 are respectively equipped with sealing windows 2, and are connected with the sealing windows 2 by bolts to form a closed body. The sample holder layer 10 i...

Embodiment 2

[0030] The structure of this embodiment is the same as that of Embodiment 1. The difference is that the material of the sample chamber and the sample holder layer is silicon carbide ceramics, the material of the sealing window is sapphire, the material of the light-transmitting window is sapphire, the material of the heating layer packaging wall is silicon carbide ceramics, and iron-chromium-aluminum alloy is used. The electric heating wire is used as a heating layer, and eight air holes are provided.

Embodiment 3

[0032] The structure of this embodiment is the same as that of Embodiment 1. The difference is that the material of the sample chamber and the sample holder layer is silicon carbide ceramics, the material of the sealing window is Kapton film, the material of the light-transmitting window is Kapton film, the material of the heating layer packaging wall is silicon carbide ceramics, and nickel-chromium is used. Alloy heating wire is used as the heating layer, and the air holes are set to thirty-two.

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Abstract

The present invention provides a hot stage for small-angle scattering experiment. The hot stage includes an intake passage, a sealed window, a translucent window, an exhaust passage, a heating layer package wall, a heating layer, a sample chamber and a sample clamp layer. The hot stage for small angle scattering experiment has thermal station temperature in the range of -40 to 1200 DEG C; and the connecting lines between two end ports of the sample chamber and the edges of the transparent window have included angle of 4- 90 DEG with the axial parallel of the sample chamber. Surrounding heating on the sample chamber by the heating layer ensures uniform heating of the sample, and avoids the effects of the heating layer on neutron and X-ray path. The sealed window and translucent window uses quartz glass, sapphire or Kapton film with high transmittance of neutrons and X-rays, so as to achieve high transmittance of neutrons and X-ray, and ensure normal operation of the neutron and X-ray small-angle scattering experiments.

Description

technical field [0001] The invention belongs to the field of material analysis, and in particular relates to a heating platform for small-angle scattering experiments, which can be used as a sample warmer for neutron and X-scattering small-angle scattering experiments. Background technique [0002] Occurs near the incident beam (usually neutrons, X-rays) (usually 0.04 o ~4 o ) coherent scattering is called small-angle scattering, which is caused by the change of the scattering length density in the sample in the range of several nanometers to hundreds of nanometers. Small-angle scattering is an important tool to obtain information on the nanoscale structure of materials. It has the advantages of good statistics and simple sample preparation, and has unique advantages in the analysis of material microstructures. [0003] In-situ temperature neutron and X-ray small-angle scattering experiments often need to use a heating stage, which can heat the sample to various temperatur...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01N23/201
Inventor 闫冠云杨桂霞周宁生曾凡松
Owner INST OF NUCLEAR PHYSICS & CHEM CHINA ACADEMY OF
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