Microscope heating stage for Raman spectral measurement of high-temperature volatile molten salt

Abstract

The invention provides a microscope heating stage for the Raman spectral measurement of high-temperature volatile molten salt. The microscope heating stage comprises a heating stage main body and an internal heating body, wherein a microlens hole is arranged on one side of the heating stage main body; a heating stage cover is arranged above the heating stage main body; a thermocouple insertion hole and an air hole are formed on the heating stage cover; a platform for placing a sample pool is arranged at the lower part of the interior of the heating stage main body, and a winding post is fixedat the bottom part of the interior of the heating stage; a bobbin is sleeved outside the winding post; a heating wire is wound on the bobbin; the winding post, the bobbin and the heating wire form the internal heating body; the heating wire extends out of the heating stage main body and is connected with an external power supply; the bottom part of the heating stage main body is connected to a strut and a base; and a sample pool made of quartz is correspondingly arranged in the heating stage main body. The heating stage provided by the invention adopts a heating mode in the sample pool and avoids influence of non-uniform volatilization of the molten salt on the accuracy of the Raman spectral measurement by sealing the sample pool; and as the excitation laser enters from the side of the sample pool, a thermocouple and a measurement focus are located on the same horizontal line, and the accuracy of temperature measurement is ensured.

Description

technical field [0001] The invention belongs to the technical field of instrument analysis, and in particular relates to a microscopic heating stage for Raman spectrum measurement of high-temperature volatile molten salts. Background technique [0002] Since the 1980s, microscopic Raman spectroscopy has developed rapidly and been widely used. However, there are many difficulties in the microscopic Raman spectroscopy of high-temperature volatile molten salts. High-temperature molten salts are usually corrosive. Therefore, it is necessary to realize its structure Raman spectroscopy measurements require the use of special materials. Industry researchers have developed several cell formats for Raman spectroscopy of volatile molten salts, but all have drawbacks. [0003] A typical "windowless sample cell" and microscope hot stage, such as figure 1 As shown, the surface tension effect of the liquid is used to prevent the molten salt from flowing out of the sample cell; two holes...

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Problems solved by technology

[0008] Aiming at the defects and design requirements of the existing sample cell and micro-thermal table for Raman spectrum measurement of high-temperature volatile molten salt, the present invention provides a micro-thermal table and sample cell for Raman spectrum measurement of high-temperature volatile molten salt, which can reduce volatile matter The impact of the escape on the composition of the molten salt to be measured, in order to improve the measurement accuracy of the Raman spectrum

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