42 results about "Radon" patented technology

The present invention relates to a production 225 Closed cycle of Ac 226 Ra solution target system. The closed cycle 226 Ra solution target system includes solution type 226 Ra target, isotope target chamber, valve, 226 Ra solution circulation structure, radium-actinium separation structure, radium-lead separation structure, photon detection system I, photon detection system II, heat exchange system, vacuum radon evaporator and radon treatment system, among which, solution type 226 The Ra target includes a solution circulation pipeline and a radium-containing solution, and the radium-containing solution is contained in a closed solution circulation pipeline; the solution circulation pipeline includes a main loop pipeline and two branch pipelines; the photon detection system I, 226 The Ra solution circulation structure, vacuum radon evaporator, heat exchange system, valve and photon detection system II are sequentially arranged on the main loop pipeline; the radium-actinium separation structure and the radium-lead separation structure are respectively arranged on the two branch pipelines. 225 Preparation efficiency and yield of Ac.

The invention discloses a compensation method and system for continuously, rapidly and accurately measuring the radon concentration in air, and the method comprises the steps: taking the number of nuclides in a measurement cavity at the initial moment of a current sampling period as an initial value, and obtaining a time-varying function of the number of nuclides in the measurement cavity in combination with a gas exchange and nuclide decay model; determining the theoretical total count of alpha particles in the current measurement period, and establishing a relational expression between the count of the alpha particles and the number of nuclides; based on the relational expression and the actual measurement count, the number of environmental radon atoms is obtained, and the radon concentration is calculated in combination with a radon decay constant; and finally, combining the number of radon atoms at the current sampling point and a model containing gas exchange and nuclide decay to obtain the nuclide number at the end of sampling, taking the nuclide number as the initial state of the next sampling period, switching the sampling points, and repeating the steps to realize continuous, rapid and accurate sampling. According to the method, through loop iteration, the balance waiting time is effectively saved, and continuous, rapid and accurate measurement of the radon concentration in the environment by a single radon measuring instrument is realized.

The invention discloses a coal mine goaf ignition area detection method, which belongs to the field of coal mine safety, and comprises the following steps: S1, delimiting a detection area; s2, delimiting a target measuring point; s3, defining a reference measuring point; s4, calibrating coordinate information of the measuring points; s5, measuring the radon value of the measuring point; radon value measurement is carried out on each reference measurement point, and an average value is taken as a local radon value reference value and is recorded as K; a radon measuring instrument is adopted to measure radon values of all the target measuring points, the radon values are recorded as L, and coordinate information of all the target measuring points and a corresponding radon value data table are drawn; s6, defining a fire area detection range; importing the data table into drawing software, generating a radon value contour map, and dividing the radon value contour map into three grades of fire areas according to different radon value intervals, namely an I area and an extremely easy fire area, L being greater than 5K; in the second zone, L is greater than or equal to 2K and less than or equal to 5K in a medium ignition zone; and the third area is a difficult-to-ignite area, and L is less than 2K. According to the method, the radon value abnormal region is accurately delimited through the radon value contour map, and a basis is provided for accurate positioning of a goaf fire source.

A method of monitoring radon in an area, comprising: acquiring a series of radon measurements for the area; obtaining a characteristic value relating to ventilation in the area; and calculating a weighted average from the series of radon measurements. Using a characteristic of the ventilation to calculate the weights allows some knowledge of the ventilation rate to be used in the averaging process so as to improve the quality of the averaged data. With a high ventilation rate, the radon level drops rapidly, with the removal of radon by ventilation dominating any radon source, and so an average can be more strongly weighted towards the current value. With a low ventilation rate, the removal of radon slows and so the noise in the data is taken into account. Combining the actual radon measurements with knowledge of the ventilation rate allows the averaging function to provide better time resolution.

The invention discloses a method for measuring the precipitation rate of Rn-220 on a soil surface in a closed-loop manner. The method comprises a measurement process and a calculation process, the measuring process comprises the steps that the radon collecting cover is inversely buckled on the surface of soil to be measured, the RAD7 radon measuring instrument and the fan are started, and when the numerical value of the RAD7 radon measuring instrument is stable, data measured by the RAD7 radon measuring instrument after the system is stable are recorded. The calculation process comprises the following steps: calculating the radon concentration on the surface of the soil by the RAD7 radon measuring instrument, calculating the Rn-220 concentration at the inlet of the RAD7 radon measuring instrument, calculating the Rn-220 concentration in the internal chamber of the RAD7 radon measuring instrument, calculating the Rn-220 concentration in the radon collecting cover according to the Rn-220 concentration in the internal chamber of the RAD7 radon measuring instrument, and correcting the Rn-220 concentration measured by the RAD7 radon measuring instrument to obtain the actual Rn-220 concentration in the radon collecting cover. And calculating the soil surface Rn-220 precipitation rate according to the Rn-220 concentration in the internal chamber of the radon measuring instrument and the actual Rn-220 concentration in the radon collecting cover. According to the calculation method disclosed by the invention, factors which exist in the measurement device and influence the measurement precision are processed, so that the precipitation rate of the Rn-220 is improved, and a basis is provided for effective processing of the Rn-220 in the next step.

A method for processing seismic data includes receiving blended seismic data from one or more seismic sources. The method also includes applying a transform to the blended seismic data to decompose the blended seismic data into different parameters. The method also includes applying one or more independent sparse inversions to the different parameters. The method also includes defining a set of prior information techniques to be used within the one or more independent sparse inversions. The method also includes determining an energy part of the blended seismic data that is greater than a first predetermined threshold based at least partially upon the multiple independent sparse inversions, the set of prior information techniques, or both. The method also includes removing the energy part from the blended seismic data to produce modified seismic data.

The utility model discloses a spiral constant flow probe for radon survey meter soil survey belongs to nuclear radiation detection technical field, including intermediate connecting piece, and the bottom end detachable connection of intermediate connecting piece has the gas guide main pipe, and the upper surface of intermediate connecting piece is provided with the flowmeter connecting hole and short stick connecting hole, and the bottom end of intermediate connecting piece is the circular truncated cone structure and is provided with the outer thread, and the gas flowmeter is connected with radon survey meter still, and the bottom end of intermediate connecting piece is the circular truncated cone structure and is provided with the outer thread, and the utility model sets up and has the intermediate connecting piece of thread, and the leakproofness between intermediate connecting piece can pass through the thread promotion and the detection soil, to make the measurement result more accurate.

The application provides a method for analyzing the migration heterogeneity of chlorinated hydrocarbon pollution in groundwater in the southern mountainous area by combining isotope tracing and distributed sampling, and belongs to the field of environmental science and engineering technology. The method generates and optimizes the layout of sampling points automatically through a geographic information system (GIS), collects multi-medium samples of soil, water and air, realizes accurate determination of the content of pollutants and isotopes based on the global Moran index and by using isotope systems such as chlorinated hydrocarbon carbon isotopes, chlorine isotopes and radon isotopes. The migration parameters, isotope fractionation coefficients and pollution path probabilities are quantitatively analyzed by using a distributed heterogeneity weighted regression and a Bayesian network model, and the spatial variability and uncertainty are comprehensively explained. Finally, the analysis results are integrated on the GIS platform, and the migration heterogeneity distribution, migration hotspots and risk levels are dynamically presented by using a three-dimensional visualization tool, so that scientific support is provided for the prevention and control of chlorinated hydrocarbon pollution and risk assessment in the southern mountainous area.

This application belongs to the field of mine radiation protection and safety monitoring technology, specifically relating to a method and system for locating radon anomaly sources in mines based on causal graphs. The method includes: standardizing the original data matrix to obtain a feature matrix; obtaining a directed acyclic graph (DAG) based on the feature matrix; using the DAG and the set of parent nodes, constructing marginal distributions for the root node and conditional distribution estimators for the child nodes to obtain a global distribution estimator; calculating the intervention distribution of the feature subset based on the global distribution estimator; calculating the causal Shapley value based on the intervention distribution; retraining the anomaly prediction model after feature filtering to obtain the final anomaly source model; and inputting actual radon concentration time-series data into the final anomaly source model to obtain the anomaly source location. This application has the effect of accurately distinguishing anomaly sources at different locations and achieving globally convergent radon anomaly source location.

The device comprises: a measuring chamber (1), in the form of a hollow cylinder made of a conducting material, through which an air current to be monitored circulates via natural or forced diffusion; a sensor element (2) with three or more planar semiconductor diodes (3) coplanar with the axial axis of the measuring chamber (1), said diodes being arranged along a section of the axial axis in a polygonal shape; a first polarisation source (41) which polarises the measuring chamber (1); a second polarisation source (42) which polarises the anode relative to the cathode; a signal amplifier (5); a discriminator (6); and a processor (7), on which a method with an instantaneous and / or continuous operating mode is performed, providing radon concentration values over measuring periods varying between 5 and 10 mins.

The present invention discloses a radon measurement method based on time-stamped background subtraction, comprising: if there is a previous measurement, then at the end of the previous measurement, the average count per second value before background subtraction and the end time are recorded; otherwise, the average count per second value before background subtraction is recorded as 0, and the end time is the start time of the current measurement; after the current measurement starts, the time is recorded in seconds, and the background count to be subtracted at each time is calculated; after the current measurement ends, the background count to be subtracted calculated at each second of the current measurement is added to obtain a total background count; the total background count of the previous step is subtracted from the total count of the current measurement to obtain a total count after subtraction; the total count after subtraction is divided by the number of seconds of the measurement time, and multiplied by the efficiency coefficient calibrated by the instrument to obtain the actual radon concentration after subtraction. The present invention can directly perform the next measurement in the case of decay interference from the previous measurement, thereby restoring the true result, eliminating the purification waiting time, and improving work efficiency.

The present invention discloses a portable real-time radioactive xenon monitor and monitoring method to address the issues of traditional xenon systems taking a long time to process low-activity concentration gas samples and easily causing cross-contamination when processing high-activity concentration gas samples. Specifically, the system comprises an air compressor, a buffer tank, a water phase separator, and a hollow fiber membrane assembly, which are connected in sequence; a radon removal column, an adsorption column, a balance column, and a detector. The sewage discharge ends of the buffer tank and the water phase separator are integrated into an integrated pipeline, which is equipped with a sewage valve. The output end of the hollow fiber membrane assembly is divided into two pipelines. The first pipeline is connected to one end of the adsorption column through the third valve, the balance column, and the seventh valve in sequence, and the second pipeline is connected to the other end of the adsorption column through the first valve, the sixth valve, and the radon removal column in sequence. Branch pipelines are connected in parallel between the sixth valve and both ends of the radon removal column. The adsorption column is bent into a snail shape and placed on the probe of the detector. The detector is used to detect the activity of radioactive xenon adsorbed by the adsorption column.

The invention discloses a radon tracing-multi-field coupling river bank karst collapse dynamic early warning method, and belongs to the field of geological disaster monitoring and early warning. The method comprises the following steps: collecting radon concentration data of river water and underground water on both sides along a target river reach system by using a portable radon detector; calculating underground water discharge flux based on the radon concentration data, and generating a discharge flux distribution diagram through spatial interpolation; establishing a radon isotope-seepage-subsurface erosion-mechanical stability multi-field coupling model; based on the multi-field coupling model, calculating karst collapse stability coefficients under different water exchange intensities; determining the variable amplitude of the critical river water level as an early warning threshold value, and dividing risk grades; and dynamic early warning and graded prevention and control based on river water level monitoring are implemented. The radon isotope tracing technology and the multi-field coupling model are combined and applied to karst collapse early warning for the first time. A complete disaster-causing chain of river water level fluctuation, water exchange enhancement, subsurface erosion development, permeability increase and sudden collapse is disclosed.

The invention relates to a chamber designed to measure the exhalation rates of radon (222Rn) and thoron (220Rn) from surfaces in an air environment. Such surfaces may include soil, rocks, building materials, and floors and walls of buildings, etc. Determining radon and thoron exhalation rates is essential for safeguarding human health against radon and thoron exposure and contributes to climate change research. The invention comprises a chamber (1), optionally equipped with a protective cap (2) against rain. The upper surface of the chamber is covered with a porous material (3) that shields the internal volume from atmospheric turbulence while remaining permeable to radon and thoron. This porous material provides a diffusion gradient for the distribution of radon and thoron activity concentrations along the height of the chamber. Inside the chamber walls, at different heights, no fewer than four highly sensitive sensors (4) are installed. Each sensor includes an alpha particle detector (5) securely attached to an adsorption element (6), which serves as a highly efficient adsorbent for radon and thoron, available as a layer or band. The chamber (1) has an open base (8) that interfaces with the surface being examined (9) below it and is hermetically sealed to prevent radon or thoron entry through the chamber walls.

The invention provides a high-sensitivity real-time measurement method for gaseous tritium, which comprises the following steps: sampling: collecting tritium-containing air, dividing the tritium-containing air into two paths, and respectively entering an ionization chamber tritium measurement unit and a liquid flash tritium measurement unit; measuring tritium in an ionization chamber, and measuring the tritium concentration of the radon-containing environment in real time through an ionization chamber tritium measuring unit; liquid flash tritium measurement: the tritium concentration is accurately measured through a liquid flash tritium measurement unit; data processing: uploading data of the ionization chamber tritium measurement unit to a data processing unit in real time, and periodically feeding back results of the liquid flash tritium measurement unit to the data processing unit; and when the data recorded by the data processing unit exceeds a threshold value, the alarm unit is triggered to give an alarm. The ionization chamber tritium measuring unit and the liquid flash tritium measuring unit cooperate, interference of radon and cosmic rays is eliminated by combining the design of the ionization chamber, and real-time monitoring of the tritium concentration in the high radon environment and accurate analysis of the low-numerical-value tritium concentration are achieved through the full-automatic sample preparation process of the liquid flash tritium measuring unit. The problems of high detection lower limit and off-line measurement lag in the prior art are solved.

The present invention belongs to the technical field of uranium exploration, and particularly relates to an automated lead chamber suitable for detecting radon using activated carbon, which can automatically open and close a door and meets the use requirements of an efficient and intelligent radon detector. The device comprises: a lead chamber base (1), a lead shielding chamber (2), a lead chamber door (3), a door connecting rod (4), a transverse gear (5), a transverse gear shaft (6), a transverse gear shaft left bracket (7), a transverse gear shaft right bracket (8), a vertical gear (9), a vertical gear shaft (10), a vertical gear shaft bracket (11), a locking connecting sleeve (12), a vertical gear shaft movable head (13), a motor connecting shaft (14), a motor outer cover (15), a motor base (16), and a brushless DC motor (17).

The present application relates to the field of radon Rn222 measurement, and particularly to a radon measuring instrument calibration radon Rn222 measuring chamber and a testing method thereof. The radon measuring instrument calibration radon Rn222 measuring chamber comprises a sealed chamber, a radium chloride 226 decay chamber arranged in the sealed measuring chamber and provided with a decay chamber to release radon Rn222 by radioactive decay of radium chloride 226, an air inlet hole and an air outlet hole arranged at two ends of the radium chloride 226 decay chamber respectively, a radon measuring instrument assembly arranged at one end of the radium chloride 226 decay chamber and connected with the air outlet hole, the radon measuring instrument assembly being provided with a plurality of radon measuring instruments to measure radon Rn222 released by radioactive decay of radium chloride 226, and an air inlet assembly. The present application realizes functional integration through modular design, solves the problems of dispersed structure and complex operation of traditional calibration equipment, breaks through the bottleneck of single-channel efficiency through parallel measurement of multiple radon measuring instruments, meets the batch calibration demand, and guarantees stable radon concentration through linkage of the air inlet assembly and the decay chamber, thereby laying a foundation for high-precision calibration.

A radiotherapy source includes a base and radioactive atoms of one or more isotopes, which are attached to the base. The radioactive atoms have a radon release rate of at least 0.5 micro-Curie (μCi) per centimeter length, and emit beta radiation achieving at 2 millimeters from the base an asymptotic dose of at least 10 Gy. Additionally, the ratio between the beta radiation asymptotic dose at a distance of 2 millimeters from the device to the radon release rate, is greater than 15 Gy / (microcurie / cm).

The invention provides a method for realizing rapid evaluation of surface uranium content by using unmanned aerial vehicle aviation release measurement, and relates to the technical field of unmanned aerial vehicle aviation radioactivity measurement. The method for realizing rapid evaluation of the uranium content of the earth surface specifically comprises the following steps: S1, system background calibration; s2, correcting atmospheric radon; s3, calibrating air sensitivity; s4, uranium content inversion; s5, carrying out data noise reduction processing; and S6, three-dimensional mapping. According to the technology, cosmic rays and equipment background are synchronously deducted through water area measurement, the radon correction coefficient is dynamically adjusted in combination with morning and evening baseline flight, the problems that aerial work of an unmanned aerial vehicle aerial radioactivity measurement system is difficult and radon correction is not accurate are solved, a height attenuation coefficient three-dimensional correction model and a wavelet noise reduction algorithm are adopted, small crystal noise interference is overcome, and the radon correction accuracy is improved. Through uranium content grading drawing and geologic model fusion, the method achieves the quick positioning of an abnormal region, is small in inversion error, is high in verification goodness of fit, remarkably improves the uranium mine verification efficiency and safety of a plateau / unmanned region, and reduces the production cost.

This invention relates to the field of nuclear radiation monitoring and protection, and provides a plug-in type radioactive aerosol monitor, including a plug-in type aerosol detection device, a signal processing and expansion unit, an electronic control unit, a terminal display and communication expansion unit, a differential pressure sensor, and a sampling system. The plug-in type aerosol detection device has a differential pressure sensor connected in parallel at both ends. The signal processing and expansion unit processes the aerosol detector signal and flow signal to identify radioactive aerosol nuclides and calculate the activity concentration of characteristic nuclides in each corresponding energy range. The electronic control unit acquires the differential pressure and flow information, executes the control function of the pump in the sampling system, and prompts the user on the status of the filter paper. This invention is convenient to operate, efficient, and easy to maintain; it has a fast measurement response, strong nuclide identification capability, and a natural radon and thorium progeny compensation function; after detecting anomalies, it can retain representative samples in real time, and the sampling analysis results are highly comparable to real-time monitoring values.

The invention discloses a dynamic background deduction method in radioactive aerosol measurement, and the method comprises the steps: carrying out the energy region division of an energy spectrum of radioactive aerosol to be measured, and obtaining the count of each energy region in a current measurement period; calculating an environment change threshold value for judging the stability of the natural background and an artificial signal threshold value for judging whether an artificial radioactive signal exists or not; predicting the background contribution value of the current measurement period in the artificial energy region based on the received proportionality coefficient set of the previous measurement period and the count of the natural characteristic energy region of the current measurement period; calculating the residual error between the actual count of the artificial energy region in the current measurement period and the background contribution predicted value; according to a comparison result of counting of a natural characteristic energy region and an environment change threshold value and a comparison result of a residual error and an artificial signal threshold value, three different states are divided, and then different strategies are executed to adjust a proportionality coefficient. According to the method, the radon thorium daughter background can be accurately, rapidly and reliably deducted in a full scene.

The invention discloses a device and a method for measuring a scale coefficient of a radon measuring instrument in a high-vacuum environment. The device comprises a measuring box, a scintillation chamber, a solid radon source, the radon measuring instrument, a scintillation chamber measuring assembly, a controller and a filter membrane. The measuring box and the scintillation chamber are vacuumized sealing boxes, the scintillation chamber is provided with an air inlet with a remote control valve, a filter membrane is arranged at the air inlet, the solid radon source is placed at the bottom of the measuring box, the scintillation chamber measuring assembly is located at the bottom of the scintillation chamber, and the controller is located outside the measuring box and controls the valve at the air inlet of the scintillation chamber to be opened or closed in a wireless mode. And when the scale coefficient is measured, vacuumizing and opening the valve are carried out, the valve is closed when the radon concentration is balanced, standing counting is carried out, the radon concentration is calculated, corresponding particle counting is selected according to the measured energy spectrum, and then the scale coefficient of the radon measuring instrument is calculated. The device is simple in structure, convenient to operate and easy to control, and can be suitable for solving the scale coefficient of the radon concentration measuring instrument in the high-vacuum environment such as the moon or the Mars.

The invention relates to the technical field of environmental radioactivity detection and nuclear radiation measurement, and discloses a method for automatically determining the relation between scale factors and temperature and humidity of a continuous radon measurement instrument by using an electrostatic collection alpha energy spectrum method. The method comprises the following steps: obtaining a stability score through working condition segmented stability control; periodic synchronous acquisition and data governance are carried out to generate a quality weight; executing reference mapping, scale triple construction and weight inheritance; carrying out constrained weighted robust modeling to generate a scale factor model; executing online correction and credibility gating to output correction concentration; and performing abrupt change monitoring and increment re-learning to realize closed-loop updating of the model. According to the method, accurate correction of temperature and humidity influence scales is ensured through full-link data accurate alignment and mass weight penetration, the long-term reliability and the self-adaptive capability of radon concentration measurement are improved, and the problem of insufficient model precision caused by data disjunction in a traditional method is effectively solved.

The present invention relates to the field of nuclear radiation detection technology, and provides a tritium measurement device with a radon compensation function. The device comprises a measurement unit, a pulse amplification circuit, a current amplification circuit, and a signal processing and display unit. The measurement unit has two paths: one path is connected to the pulse amplification circuit to measure radon pulse signals, thereby achieving radon compensation measurement; the other path is connected to the current amplification circuit to measure current signals including tritium and radon. The device utilizes the pulse signals generated by radon for compensation measurement, thereby avoiding the influence of tritium signals on radon measurement. It does not require detritium treatment and does not have complex drying and oxidation structures. It is easy to implement, simple, and efficient.

The invention discloses a device and a method for measuring the emanation coefficient of radon generated by radium decay in lunar soil. The device comprises a nitrogen cylinder, a pressure reducing valve, a first connector, a first electromagnetic valve, a metal container, a pressure gauge, a second electromagnetic valve, a second connector and an air pump. The nitrogen cylinder, the pressure reducing valve, the first connector, the first electromagnetic valve, the metal container, the second electromagnetic valve, the second connector and the air pump are sequentially connected in series, and the other end of the air pump is communicated with the external environment. The method comprises the following steps: starting an air pump to control the air pressure value of a metal container, respectively recording the radon activity of lunar soil particles in the metal container at present and after 28 days, establishing a relational expression between the radon emanation coefficient and the radon activity of the lunar soil particles under different air pressures, substituting the measured radon activity into the relational expression, and fitting to obtain a relation curve between the emanation coefficient and the air pressure. And substituting the air pressure value on the moon to calculate the emanation coefficient of the lunar soil at the normal temperature. The measuring device is simple, the measuring process is convenient and fast, and the emanation coefficient of radon generated by radium decay in lunar soil in the atmosphere-free environment such as the moon and the like can be obtained.

The invention relates to the technical field of forepoling of a floor drainage roadway, and discloses a radon measuring instrument for determining a forepoling distance, which comprises a radon measuring instrument, a gas conveying pipe mounted on the radon measuring instrument, a gas inlet pipe fixedly connected to the gas conveying pipe, a collecting pipe fixedly connected to the gas inlet end of the gas inlet pipe, and a sealing airbag, when the radon measuring instrument works, the air inlet end of the collecting pipe extends into a detection drill hole through the sealing air bag, the collecting pipe is fixedly connected with the sealing air bag, the two baffles are placed on the two sides of the sealing air bag respectively, the air inlet end of the collecting pipe is connected with a filtering pipe in an inserted mode, buffering plates are symmetrically arranged on the outer wall of the filtering pipe, and lifting mechanisms are symmetrically arranged on the filtering pipe. The buffer plate is controlled to ascend and descend. The lifting mechanism is matched with the buffer plate for use, the outer wall of the collecting pipe is protected, the buffer plate is unfolded on the outer side of the collecting pipe, so that the collecting pipe is kept balanced during working, the collecting pipe is prevented from being collided when a roadway vibrates, and the protective property is higher.

This invention belongs to the field of radon concentration measurement technology, specifically disclosing an apparatus and method for enrichment and analysis of extremely low radon concentrations. The apparatus includes a vertically placed cylinder with a heating device and a pressurizing device mounted on it. A radon escapement structure, made of activated carbon fiber, is housed inside the cylinder. A negative pressure pump is located at the outlet end of the radon escapement structure, providing a negative pressure environment to guide airflow. The outlet end of the negative pressure pump is connected to a distributor. The first path of the distributor is open to the atmosphere, used to discharge the treated air during the radon collection stage of the radon escapement structure. The end of the second path is connected to a radon detection instrument for radon concentration measurement during the radon release stage of the radon escapement structure. This invention lowers the detection limit of radon concentration measurement, solving the problem that radon concentrations in certain environments are below the detection limit of radon measuring equipment, thus making measurement impossible. This provides support for effectively assessing the impact of environmental radiation background on extremely low background physics experiments.

The present application relates to the technical field of nuclear radiation detection, and particularly relates to a radon-tritium separation discrimination measurement device and method in a high-radon environment, which comprises a first measurement channel, a second measurement channel, a third measurement channel and a fourth measurement channel, and respectively measures a first current value I1, a second current value I2, a third current value I3 and a fourth current value I4, and respectively calculates the activity concentration C Rn of radon Rn, the activity concentration C HTO of tritiated water HTO and the activity concentration C HT of tritium gas HT according to the first current value I1, the second current value I2, the third current value I3 and the fourth current value I4. The present application focuses on the characteristics of indoor environment, considers the influence of indoor radon on tritium measurement, adopts a series-parallel differential mode, avoids the low detection limit influence caused by multi-channel measurement, is more suitable for low-concentration-level environment measurement, saves the need of purging gas, and simplifies the device structure.

The invention discloses a uranium-radium balance coefficient determination method based on geophysical logging, and relates to the technical field of sandstone type uranium ore core detection. Comprising the following steps: determining radium equivalent uranium content of each unit layer in a target drilled hole, and determining an industrial uranium mine hole; a geophysical prospecting parameter hole is constructed at the industrial uranium mine hole, periodic repeated measurement is carried out, a radium radon balance recovery curve is obtained, and a radium radon balance coefficient is determined; the radium equivalent uranium content of the target drill hole is corrected through the radium radon balance coefficient, and the real radium equivalent uranium content is obtained; and respectively accumulating the real radium equivalent uranium content and the stratum rock uranium content within the same depth range as the industrial uranium mine hole, and determining the uranium radium balance coefficient of the target drill hole according to the ratio of the two accumulated values. According to the uranium and radium balance coefficient obtained through the method, existing information of uranium, accumulated information of radium and dynamic balance information of a radium-radon system are fused, and the actual balance state of uranium and radium at the current position after geological historical evolution can be reflected more truly.