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A Sensitivity Correction Method for Optical Luminescence Dating Experiment

A calibration method and optical luminescence technology, which can be used in material excitation analysis and other directions, can solve the problem of low accuracy and reliability of sample equivalent dose testing, reduce experimental testing costs, reasonable equivalent dose values, and improve accuracy and reliability. The effect of reliability

Active Publication Date: 2021-07-13
GUANGZHOU COLLEGE OF SOUTH CHINA UNIV OF TECH
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Problems solved by technology

[0005] The embodiment of the present invention provides a sensitivity correction method for the optical luminescence dating experiment, so as to solve the problem of the measurement accuracy of the equivalent dose of the sample caused by the unsatisfactory technique of correcting the change of the sensitivity in the existing optical luminescence dating experiment. And the technical problems with low reliability, so as to effectively optimize the correction method of the change of sensitivity, and then improve the test accuracy and reliability of the equivalent dose of the sample

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  • A Sensitivity Correction Method for Optical Luminescence Dating Experiment
  • A Sensitivity Correction Method for Optical Luminescence Dating Experiment
  • A Sensitivity Correction Method for Optical Luminescence Dating Experiment

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Embodiment Construction

[0031] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without creative efforts fall within the protection scope of the present invention.

[0032] See figure 1 , a preferred embodiment of the present invention provides a sensitivity correction method for an optical luminescence dating experiment, the SAR method test process of the optical luminescence dating experiment includes a plurality of cyclic testing steps, and each of the cyclic testing steps uses For measuring the current luminescence signal, the luminescence signal includes regeneration dose luminescence signal and test dose luminescence sign...

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Abstract

The invention provides a sensitivity correction method for an optical luminescence dating experiment, which includes calculating the measured regeneration dose luminescence signal value and the test dose luminescence signal value in each cycle test step, and obtaining the current Regeneration dose sensitivity change value; wherein, the current regeneration dose sensitivity change value is the change amount of the luminescence signal value measured by the same regeneration dose; the current regeneration dose sensitivity change value is corrected, and the corrected regeneration dose is obtained Sensitivity change value; the current test dose sensitivity change value is the difference between the test dose luminescence signal value measured in the previous cycle test step and the current test dose luminescence signal value measured in the current cycle test step; the current test dose The sense change value is corrected, and the corrected test dose sense change value is obtained. The invention can effectively optimize the correction method for the change of sensitivity, thereby improving the test accuracy and reliability of the equivalent dose of the sample.

Description

technical field [0001] The invention relates to the technical field of correction of experimental dose sensitivity changes, in particular to a sensitivity correction method for optical luminescence dating experiments. Background technique [0002] OSL dating is the determination of the age of the last exposure event in sediments. Since the method was proposed in the 1980s, it has been more and more widely used. Compared with 14C dating, although OSL dating has the disadvantage of large error (generally 5%-10%), it has the following obvious advantages: ① its dating range is much larger than the former; ② dating materials ( Quartz or feldspar), which is especially important in deserts and lakes in arid and semi-arid regions, because it is difficult to find organic matter for 14C dating in these areas; ③ is the direct dating of sediments; ④ dating events include Exposure, heat (above 400°C), volcanoes, earthquakes, and crystal (calcite, etc.) formation, etc. [0003] The exp...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01N21/63
CPCG01N21/63
Inventor 马乐高东林刘瑞元邱少键姜思羽祝秀芬
Owner GUANGZHOU COLLEGE OF SOUTH CHINA UNIV OF TECH
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