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Long-term sealing sample ore radon emanation coefficient rapid measurement method

A technology of coefficient and mineral sample, applied in the field of radiation measurement, can solve the problems of long time-consuming radon emanation coefficient, etc., and achieve the effects of fast and simple measurement, accurate and reliable measurement results, and short measurement cycle

Active Publication Date: 2017-04-05
NANHUA UNIV
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Problems solved by technology

[0007] The purpose of the present invention is to propose a method for quickly measuring the radon emission coefficient of long-term sealed mine samples in view of the time-consuming problem of conventional gamma energy spectroscopy in measuring the radon emission coefficient of long-term sealed mine samples

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  • Long-term sealing sample ore radon emanation coefficient rapid measurement method
  • Long-term sealing sample ore radon emanation coefficient rapid measurement method
  • Long-term sealing sample ore radon emanation coefficient rapid measurement method

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Embodiment Construction

[0055] The method for rapid measurement of radon emission coefficient of long-term sealed ore samples, first of all, the number of radon atoms N 1 , and then unpack the sealed sample, and discharge the free radon in the sample by stirring in an open environment, and then measure the number of unbalanced radon atoms in the sample after resealing N 2 , and finally use N 1 , N 2 And the established long-term sealed mine sample radon emanation coefficient theoretical calculation formula to calculate the radon emanation coefficient η of the sample.

[0056] The establishment process of the long-term sealed mine sample radon emanation coefficient theoretical calculation formula is as follows:

[0057] It is known that the number of radon atoms in the equilibrium state and the unbalanced state of the sample is N 1 , N 2 , the decay coefficient of radium is λ 1 , the decay coefficient of radon is λ 2 , since the radium in the sample always decays with a fixed ratio to produce fr...

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Abstract

The present invention provides a long-term sealing sample ore radon emanation coefficient rapid measurement method. The method comprises: a high-purity germanium [Gamma] spectrometer is employed to measure the radon atomic number N1 of the balance state in the long-term sealing sample ore, then the sealing samples are unpacked, the free radon in the samples is discharged in the stirring mode in the open environment and then is repeatedly sealed to measure the radon atomic number N2 of the balance state, and the N1, the N2 and the established long-term sealing sample ore radon emanation coefficient theoretical calculation formula are employed to calculate the radon emanation coefficient [Eta] of the samples. The long-term sealing sample ore radon emanation coefficient theoretical calculation formula is shown in the specification. The long-term sealing sample ore radon emanation coefficient rapid measurement method does not need long-term waiting for the renew accumulation of radon during the twice measurement of the radon atomic number to realize the rapid measurement of the long-term sealing sample ore radon emanation coefficient.

Description

technical field [0001] The invention relates to the technical field of radiation measurement, in particular to a method for quickly measuring the radon emanation coefficient of long-term sealed mine samples. Background technique [0002] Uranium resources are the basis for the development of the nuclear industry, and the safe development and utilization of uranium mines is the first link and the top priority of nuclear safety. In the process of uranium mining, radon produced by the decay of radium in the ore will be released into the air and cause radiation hazards to the human body. Therefore, radon protection in mines is an important part of daily radiation safety protection. The radon released from the ore into the air is called free radon, while the other part of the radon bound in the ore lattice is called bound radon. The ratio of the total radon produced by the decay of radium within a certain period of time, so the radon emission coefficient is the most intuitive co...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01T1/167
CPCG01T1/167
Inventor 周青芝居治豪何正忠丘寿康王晨毅
Owner NANHUA UNIV