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Device and method for measuring ambient temperature variation on basis of measurement of nonmetal crystal mineral charge distribution

A technology of charge distribution and ambient temperature, applied in measuring devices, thermometers with physical/chemical changes, thermometers, etc., to simplify temperature measurement conditions and save maintenance costs

Inactive Publication Date: 2013-02-06
GUANGZHOU INST OF GEOCHEMISTRY - CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

There is no energy state in the ideal insulator or semiconductor band gap, but in the insulator or semiconductor solid that exists in nature, due to the existence of defects and impurity components, there are electron traps and hole traps that can fill the charge in the band gap

Method used

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  • Device and method for measuring ambient temperature variation on basis of measurement of nonmetal crystal mineral charge distribution
  • Device and method for measuring ambient temperature variation on basis of measurement of nonmetal crystal mineral charge distribution
  • Device and method for measuring ambient temperature variation on basis of measurement of nonmetal crystal mineral charge distribution

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Experimental program
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Effect test

Embodiment 1

[0031] like figure 2 As shown, the environmental temperature change measurement device based on measuring the charge distribution of non-metallic crystal minerals in this embodiment includes a sample chamber, a thermal activation unit, a photoelectric conversion detection unit and an analysis unit;

[0032] The sample chamber is used to load samples, and can be set to a standard atmospheric pressure or low vacuum measurement environment; the thermal activation unit is used to thermally activate the sample in the sample chamber to release thermoluminescence, which is used in this embodiment The conduction heating device conducts heat to activate the sample in the sample chamber; the photoelectric conversion detection unit is a photomultiplier tube, which is used to convert the thermoluminescent light signal released by the sample into an electrical signal; the analysis unit is used to read The electrical signal of the detection unit is photoelectrically converted, and the ther...

Embodiment 2

[0037] The environmental temperature change measuring device based on measuring the charge distribution of non-metallic crystal minerals in this embodiment is basically the same as that in Embodiment 1, except that the photoelectric conversion detection unit is a charge-coupled device (CCD).

[0038] First artificially irradiate granular feldspar minerals with a dose of ~920Gray. After standing in a dark room at room temperature for 48 hours, it is used as a sample to determine the change of ambient temperature based on the measurement of the charge distribution of non-metallic crystal minerals. In the sample chamber of the device, the sample is heated by conduction, and the heating rate is 5°C / s, so that the sample is thermally activated, and the thermal activation causes the electron-hole pairs in the sample to recombine and emit light, that is, thermoluminescence, through a charge-coupled device (CCD) The thermoluminescence optical signal is converted into an electrical sign...

Embodiment 3

[0040] The environmental temperature change measuring device based on measuring the charge distribution of non-metallic crystal minerals in this embodiment is the same as that in Embodiment 1.

[0041] First artificially irradiate granular feldspar minerals, the irradiation dose is 288Gray, and then divided into 7 groups, and preheated as in Example 1, respectively at 260°C, 280°C, 320°C, 340°C, 360°C, Preheat at 380°C and 400°C for 1000 seconds, place 7 groups of samples in the sample chamber of the environmental temperature change measurement device based on the measurement of charge distribution of non-metallic crystal minerals, heat the samples by conduction, and the heating rate is 5°C / s , so that the sample is thermally activated, and the thermal activation causes the electron-hole pairs in the sample to recombine and emit light, that is, thermoluminescence. The thermoluminescent light signal is converted into an electrical signal through a photomultiplier tube, and then ...

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Abstract

The invention discloses a device and a method for measuring ambient temperature variation on the basis of measurement of nonmetal crystal mineral charge distribution. The device comprises a sample cavity, a thermal activation unit, a photoelectric conversion detection unit and an analytical unit; the sample cavity is used for loading samples; the thermal activation unit is used for activating the samples in the sample cavity through heating, so that the samples release thermoluminescence; the photoelectric conversion detection unit is used for converting the thermoluminescence signals which are sent out by the samples into electrical signals; and the analytical unit is used for reading the electrical signals of the photoelectric conversion detection unit, analyzing the thermoluminescence emitting characteristics of the samples and comparing with the thermoluminescence emitting characteristics of the same type of samples which are irradiated by X-rays, ultraviolet light or isotopic radioactive sources and have known heating histories, and thus, the heating temperature variation histories of the samples can be estimated. After the device is utilized, the heating histories and temperature variation histories of the samples can be measured in a non-scene mode according to the method disclosed by the invention.

Description

Technical field: [0001] The invention relates to a temperature measuring device and a measuring method, in particular to an environmental temperature change measuring device and a measuring method based on measuring the charge distribution of non-metallic crystal minerals for estimating the heating history and temperature change of samples. Background technique: [0002] Existing temperature measuring devices, such as thermal thermometers, thermocouples, etc., record the temperature change of a certain heat-sensitive material for any continuous period of time, and do not have the function of relatively permanent memory of temperature change history. [0003] The energy level concept quoted from solid state physics refers to the electronic energy level on the microstructure in a solid, and these electronic energy levels determine the electrical characteristics of the solid. The valence band refers to the highest energy band that can be occupied by electrons at absolute zero, ...

Claims

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Application Information

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IPC IPC(8): G01K11/20
Inventor 龚革联周继彬刘顺生孙卫东
Owner GUANGZHOU INST OF GEOCHEMISTRY - CHINESE ACAD OF SCI
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