CN117130036A - Radiation dose evaluation method based on light-emitting technology - Google Patents
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- 230000005855 radiation Effects 0.000 title claims abstract description 55
- 238000011156 evaluation Methods 0.000 title claims abstract description 20
- 238000000034 method Methods 0.000 claims description 58
- 210000003298 dental enamel Anatomy 0.000 claims description 24
- 238000005259 measurement Methods 0.000 claims description 12
- 238000004020 luminiscence type Methods 0.000 claims description 11
- 239000002245 particle Substances 0.000 claims description 10
- 238000005498 polishing Methods 0.000 claims description 7
- 230000002238 attenuated effect Effects 0.000 claims description 5
- 238000010438 heat treatment Methods 0.000 claims description 5
- 238000004140 cleaning Methods 0.000 claims description 4
- 230000005284 excitation Effects 0.000 claims description 4
- 239000004570 mortar (masonry) Substances 0.000 claims description 4
- 230000000630 rising effect Effects 0.000 claims description 4
- 229910000679 solder Inorganic materials 0.000 claims description 2
- 238000001514 detection method Methods 0.000 abstract description 27
- 238000004980 dosimetry Methods 0.000 abstract description 3
- 230000000694 effects Effects 0.000 abstract description 3
- 230000008569 process Effects 0.000 description 7
- ATJFFYVFTNAWJD-UHFFFAOYSA-N Tin Chemical compound [Sn] ATJFFYVFTNAWJD-UHFFFAOYSA-N 0.000 description 4
- 238000005476 soldering Methods 0.000 description 4
- 238000012937 correction Methods 0.000 description 3
- 238000011065 in-situ storage Methods 0.000 description 3
- 238000000504 luminescence detection Methods 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 230000009471 action Effects 0.000 description 2
- 239000000919 ceramic Substances 0.000 description 2
- 238000003860 storage Methods 0.000 description 2
- 238000000904 thermoluminescence Methods 0.000 description 2
- 230000007704 transition Effects 0.000 description 2
- 206010073306 Exposure to radiation Diseases 0.000 description 1
- 230000001154 acute effect Effects 0.000 description 1
- 238000003745 diagnosis Methods 0.000 description 1
- 201000010099 disease Diseases 0.000 description 1
- 208000037265 diseases, disorders, signs and symptoms Diseases 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 230000005865 ionizing radiation Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000004393 prognosis Methods 0.000 description 1
- 239000002344 surface layer Substances 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01T—MEASUREMENT OF NUCLEAR OR X-RADIATION
- G01T1/00—Measuring X-radiation, gamma radiation, corpuscular radiation, or cosmic radiation
- G01T1/02—Dosimeters
- G01T1/10—Luminescent dosimeters
- G01T1/105—Read-out devices
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01T—MEASUREMENT OF NUCLEAR OR X-RADIATION
- G01T1/00—Measuring X-radiation, gamma radiation, corpuscular radiation, or cosmic radiation
- G01T1/16—Measuring radiation intensity
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- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
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Abstract
The invention relates to the technical field of nuclear emergency rescue, and provides a radiation dose evaluation method based on a light-emitting technology, which aims at the problem that personnel cannot quickly evaluate the radiation dose of irradiated personnel under emergency conditions because the personnel do not carry personal radiation dosimeters. Has the technical effects of high detection speed, good dosimetry property, simple operation and the like.
Description
Technical Field
The invention relates to the technical field of nuclear emergency rescue, in particular to a radiation dose evaluation method based on a light-emitting technology.
Background
When personnel are accidentally irradiated by ionizing radiation, the human body is damaged by the radiation, and the radiation damage degree is closely related to the radiation dose to which the personnel are exposed. The radiation dose evaluation is to quantitatively evaluate the radiation dose received by the personnel by using a measuring method, and can provide a key basis for carrying out diagnosis classification, treatment plan establishment and prognosis condition judgment of the acute radiation diseases. However, in most scenes, exposure to radiation is an unexpected situation, and the person being irradiated does not carry a personal radiation dosimeter; therefore, how to complete detection and evaluation of the received radiation dose for the irradiated person in a scenario where the personal dosimeter is not worn is a problem to be solved.
Disclosure of Invention
The invention provides a radiation dose evaluation method based on a light-emitting technology, which meets the requirement of rapid radiation dose evaluation for personnel.
In order to achieve the above object, the present invention provides a radiation dose evaluation method based on a light emission technique, the method comprising:
the method comprises the steps of obtaining a surface patch resistor in electronic equipment carried by an irradiated person on site as a sample to be detected, and storing the sample in a dark place;
the sample to be detected is faced to the light detector, and is detected by a light-emitting technology reading instrument, and a light-emitting curve C0 is recorded;
performing first supplementary irradiation on the to-be-detected by using an irradiation source which is the same as the irradiation source irradiated by the irradiated personnel, wherein the irradiation dose is 1Gy; detecting by using a light-emitting technology reading instrument, and recording a light-emitting curve C1;
performing secondary supplementary irradiation on the to-be-detected by using an irradiation source which is the same as the irradiation source irradiated by the irradiated personnel, wherein the irradiation dose is 2Gy; detecting by using a light-emitting technology reading instrument, and recording a light-emitting curve C2;
performing third supplementary irradiation on the to-be-detected by using the irradiation source which is the same as the irradiation source irradiated by the irradiated personnel, wherein the irradiation dose is 3Gy; detecting by using a light-emitting technology reading instrument, and recording a light-emitting curve C3;
acquiring luminous intensity Q0, luminous intensity Q1, luminous intensity Q2 and luminous intensity Q3 according to the luminous curve C0, the luminous curve C1, the luminous curve C2 and the luminous curve C3;
further, the radiation dose is determined based on the light emission intensity Q0, the light emission intensity Q1, the light emission intensity Q2, and the light emission intensity Q3.
In order to achieve the above object, the present invention provides a radiation dose evaluation method based on a light emission technique, the method comprising:
acquiring tooth enamel of an irradiated person on site as a sample to be detected, and storing the sample in a dark place;
the sample to be detected is faced to the light detector, and is detected by a light-emitting technology reading instrument, and a light-emitting curve C0 is recorded;
performing first supplementary irradiation on the to-be-detected by using an irradiation source which is the same as the irradiation source irradiated by the irradiated personnel, wherein the irradiation dose is 1Gy; detecting by using a light-emitting technology reading instrument, and recording a light-emitting curve C1;
performing secondary supplementary irradiation on the to-be-detected by using an irradiation source which is the same as the irradiation source irradiated by the irradiated personnel, wherein the irradiation dose is 2Gy; detecting by using a light-emitting technology reading instrument, and recording a light-emitting curve C2;
performing third supplementary irradiation on the to-be-detected by using the irradiation source which is the same as the irradiation source irradiated by the irradiated personnel, wherein the irradiation dose is 3Gy; detecting by using a light-emitting technology reading instrument, and recording a light-emitting curve C3;
acquiring luminous intensity Q0, luminous intensity Q1, luminous intensity Q2 and luminous intensity Q3 according to the luminous curve C0, the luminous curve C1, the luminous curve C2 and the luminous curve C3;
further, the radiation dose is determined based on the light emission intensity Q0, the light emission intensity Q1, the light emission intensity Q2, and the light emission intensity Q3.
Further, preferably, when the light-emitting technology readout instrument is a light-emitting readout instrument, the excitation light source of the light-emitting readout instrument is a blue light source, the wavelength is 470±30nm, and the measurement time is 100 seconds.
Further, preferably, when the light-emitting technology reading instrument is a pyroelectric reading instrument, the heating temperature is 50-360 ℃; the preheating temperature is 50 ℃; the preheating time is 10 seconds; the temperature rising rate is 5 ℃/s.
Further, it is preferable that the luminous intensity is obtained by using a luminous curve by the following formula:
Q＝∑i
where Q is the total luminous intensity, i is the luminous intensity of each point in the luminous curve C.
Further, preferably, after the light emission intensity is obtained, the method further comprises adjusting the time attenuation of the light emission intensity, wherein the adjustment of the time attenuation is realized by the following formula:
Q t ＝Q 0 *y
wherein y=y 0 +Aexp(-t/t 0 ) The method comprises the steps of carrying out a first treatment on the surface of the y is the coefficient of the original signal attenuated by the signal of the luminous intensity after the time t; y is 0 ＝0.66，A＝0.33，t 0 ＝17.16。
Further, preferably, before the surface mount resistor in the electronic device carried by the person to be irradiated is obtained as the sample to be detected on site, the method further comprises a step of mechanically polishing the solder at two ends of the surface mount resistor in the electronic device carried by the person to be irradiated.
Further, preferably, the surface patch resistor in the electronic device carried by the irradiated person is obtained on site as the sample to be detected, and the surface patch resistor in the electronic device carried by the irradiated person and close to the electronic device shell is selected as the sample to be detected.
Further, preferably, the surface mount resistor in the electronic device carried by the irradiated person is obtained on site as the sample to be detected, and the surface mount resistor with the largest volume in the surface mount resistor of the electronic device carried by the irradiated person is selected as the sample to be detected.
Further, preferably, the method of obtaining dental enamel of an irradiated person in situ as a sample to be tested comprises,
cleaning the tooth surface of the irradiated person to remove stains covered on the surface;
breaking up the teeth and taking enamel parts;
enamel was ground to 1mm using a mortar 3 And (3) particle size particles, namely, taking tooth enamel as a sample to be detected.
According to the radiation dose evaluation method based on the light-emitting technology, aiming at the problem that personnel often cannot quickly evaluate the radiation dose of the irradiated personnel because the personnel do not carry the personal radiation dosimeter under the emergency condition, the radiation dose of the irradiated personnel which do not carry the personal radiation dosimeter under the emergency condition is quickly evaluated by utilizing materials such as resistance ceramics embedded in mobile phones or other articles which are often carried by the personnel, and the materials can absorb energy under the action of rays to generate energy level transition and can be detected by a light-emitting method. The radiation accident dose evaluation method based on the light-emitting method has the advantages of high detection speed, good dosimetry characteristics, simplicity in operation and the like, can detect and evaluate the received radiation dose under the condition that on-site personnel do not wear a personal dosimeter, and can improve the technical effects of classification and cure capability of radiation wounded persons.
Drawings
Fig. 1 is a graph showing a radiation dose determination according to a luminous intensity according to a radiation dose evaluation method based on a luminescence technology according to an embodiment of the present invention.
The achievement of the objects, functional features and advantages of the present invention will be further described with reference to the accompanying drawings, in conjunction with the embodiments.
Detailed Description
It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the invention.
Example 1
In order to achieve the above object, the present invention provides a radiation dose evaluation method based on a light emission technique, the method comprising:
s101, acquiring a surface patch resistor in electronic equipment carried by an irradiated person on site as a sample to be detected, and storing the sample in a dark place. Before the surface patch resistor in the electronic equipment carried by the irradiated personnel is obtained on site to serve as a sample to be detected, the method further comprises the step of mechanically polishing soldering tin at two ends of the surface patch resistor in the electronic equipment carried by the irradiated personnel. It should be noted that, other existing methods for detecting signals by using surface patch resistors need to remove the surface layer of the resistor; for the luminous intensity detection based on the luminous technology, only soldering tin at two ends of the resistor is needed to be polished.
In order to further improve the detection accuracy, in the process of acquiring the surface patch resistor in the electronic equipment carried by the irradiated personnel on site as a sample to be detected, preferentially selecting the surface patch resistor, close to the shell of the electronic equipment, in the electronic equipment carried by the irradiated personnel as the sample to be detected; and selecting the surface patch resistor with the largest volume as a sample to be detected in the surface patch resistors of the electronic equipment carried by the irradiated personnel. In a specific implementation process, the number of the surface patch resistors is required to be 1-10; if the same type of surface mount resistor exists, the same type of resistor is preferably selected. In the scene that the resistors with the same model exist, the detection can be completed when the number of the resistors is more than 3.
In a specific implementation process, the specific steps of collecting the sample to be detected include: the surface patch resistor is removed by adopting a mechanical mode, and a heating method cannot be adopted; taking 1-10 resistors with the same model as one group, and preparing 3 groups; removing soldering tin at two ends of the surface patch resistor by using a mechanical polishing mode to obtain a sample to be detected; and (3) placing the sample to be detected into a light-shielding bag and a light-shielding box for storage, wherein the storage temperature of the sample to be detected is 15-30 ℃.
S102, the sample to be detected is faced to a light detector, and a light-emitting technology reading instrument is used for detecting and recording a light-emitting curve C0; when the light-emitting technology reading instrument is a light-emitting reading instrument, the excitation light source of the light-emitting reading instrument can be a blue light source, the wavelength is 470+/-30 nm, and the measurement time is 100 seconds. The sample to be detected is placed in a sample detection tray, and the diameter of the sample detection tray is not smaller than 8 mm; and the blank surface (character-free surface) of the sample to be detected faces the light-emitting technology reading instrument.
S103, carrying out first supplementary irradiation on the to-be-detected by using the irradiation source which is the same as the irradiation source irradiated by the irradiated personnel, wherein the irradiation dose is 1Gy; the detection is performed by using a light-emitting technology readout instrument, and a light-emitting curve C1 is recorded.
S104, carrying out secondary supplementary irradiation on the to-be-detected by using the irradiation source which is the same as the irradiation source irradiated by the irradiated personnel, wherein the irradiation dose is 2Gy; the detection is performed by using a light-emitting technology readout instrument, and a light-emitting curve C2 is recorded.
S105, carrying out third supplementary irradiation on the to-be-detected by using the irradiation source which is the same as the irradiation source irradiated by the irradiated personnel, wherein the irradiation dose is 3Gy; the detection is performed by using a light-emitting technology readout instrument, and a light-emitting curve C3 is recorded.
S106, acquiring luminous intensity Q0, luminous intensity Q1, luminous intensity Q2 and luminous intensity Q3 according to the luminous curve C0, the luminous curve C1, the luminous curve C2 and the luminous curve C3;
the luminous intensity is obtained by utilizing a luminous curve and is realized by the following formula:
Q＝∑i
where Q is the total luminous intensity, i is the luminous intensity of each point in the luminous curve C.
S107, further, the radiation dose is determined based on the light emission intensity Q0, the light emission intensity Q1, the light emission intensity Q2, and the light emission intensity Q3.
Assuming that the sample accident irradiation dose is X, the doses corresponding to C0, C1, C2, and C3 are X, X +1, x+3, and x+6 (Gy), respectively, and the corresponding luminous intensities are Q0, Q1, Q2, and Q3. The graph is drawn as in fig. 1. Then, the accident irradiation dose X of the sample is calculated according to the curve.
In a specific implementation process, if a plurality of groups of samples exist, calculating according to the steps S101-S107 to obtain the sample accident irradiation dose X; and adjusting and optimizing the supplementary irradiation dose to enable the irradiation dose to be close to X, so as to obtain a more accurate detection result.
Example 2
In order to achieve the above object, the present invention provides a radiation dose evaluation method based on a light emission technique, the method comprising:
s101, acquiring a surface patch resistor in electronic equipment carried by an irradiated person on site as a sample to be detected, and storing the sample in a dark place. Before the surface patch resistor in the electronic equipment carried by the irradiated personnel is obtained on site to serve as a sample to be detected, the method further comprises the step of mechanically polishing soldering tin at two ends of the surface patch resistor in the electronic equipment carried by the irradiated personnel.
S102, the sample to be detected is faced to a light detector, and a light-emitting technology reading instrument is used for detecting and recording a light-emitting curve C0; when the light-emitting technology reading instrument is a thermoluminescence reading instrument, the heating temperature is 50-360 ℃; the preheating temperature is 50 ℃; the preheating time is 10 seconds; the temperature rising rate is 5 ℃/s.
S103, carrying out first supplementary irradiation on the to-be-detected by using the irradiation source which is the same as the irradiation source irradiated by the irradiated personnel, wherein the irradiation dose is 1Gy; the detection is performed by using a light-emitting technology readout instrument, and a light-emitting curve C1 is recorded.
S104, carrying out secondary supplementary irradiation on the to-be-detected by using the irradiation source which is the same as the irradiation source irradiated by the irradiated personnel, wherein the irradiation dose is 2Gy; the detection is performed by using a light-emitting technology readout instrument, and a light-emitting curve C2 is recorded.
S105, carrying out third supplementary irradiation on the to-be-detected by using the irradiation source which is the same as the irradiation source irradiated by the irradiated personnel, wherein the irradiation dose is 3Gy; the detection is performed by using a light-emitting technology readout instrument, and a light-emitting curve C3 is recorded. It should be noted that, source items similar to accident scenes are preferably selected to perform supplementary irradiation on the sample to be detected. If the irradiation is performed by using different types of radiation sources in consideration of factors such as field test conditions, the irradiation should be corrected according to correction coefficients determined in advance by experiments.
S106, obtaining the luminous intensity Q0, the luminous intensity Q1, the luminous intensity Q2 and the luminous intensity Q3 according to the luminous curve C0, the luminous curve C1, the luminous curve C2 and the luminous curve C3.
The luminous intensity is obtained by utilizing a luminous curve and is realized by the following formula:
Q＝∑i
where Q is the total luminous intensity, i is the luminous intensity of each point in the luminous curve C.
After the luminous intensity is obtained, the method further comprises the step of adjusting the time attenuation of the luminous intensity, wherein the time attenuation is adjusted through the following formula:
Q t ＝Q 0 *y
wherein y=y 0 +Aexp(-t/t 0 ) The method comprises the steps of carrying out a first treatment on the surface of the y is the coefficient of the original signal attenuated by the signal of the luminous intensity after the time t; y is 0 ＝0.66，A＝0.33，t 0 =17.16, where t is the time of irradiation to the pyroelectric measurement interval in hours.
In a specific implementation process, if the sample volume allows, a set of attenuation curves can be measured separately, and more specific time correction can be performed by using the attenuation curves, so that more accurate detection results can be obtained. When the attenuation curve is measured alone, in the case where the model and lot of the device as the base sample can be determined, the measurement can be performed with a sample that is identical to the model and lot of the device as the base sample. When the attenuation curve is measured alone, in the case where the model and lot of the original device are difficult to determine, a sample with a large irradiation dose is preferable for measurement. The length of the observation time covers at least 3 times the first luminescence detection from the time of the sample's accidental irradiation when the decay curve is measured alone.
S107, further, the radiation dose is determined based on the light emission intensity Q0, the light emission intensity Q1, the light emission intensity Q2, and the light emission intensity Q3.
Example 3
In order to achieve the above object, the present invention provides a radiation dose evaluation method based on a light emission technique, the method comprising:
s101, acquiring tooth enamel of an irradiated person on site to serve as a sample to be detected, and storing the sample in a dark place. It should be noted that, when the resistor of the portable electronic device cannot be obtained, some tissue samples of the human body can also be used as samples to be detected for light-emitting detection under specific conditions. For example, tooth enamel has the property of being photodefinable after being irradiated. Thus, the enamel sample can be used for luminescence detection, and the radiation dose to the evaluator.
Methods for in situ acquisition of tooth enamel of an irradiated person as a sample to be tested include,
s1011, cleaning the tooth surface of the irradiated person and removing the stain covered on the surface; polishing can be performed if necessary;
s1012, crushing teeth, and taking enamel parts;
s1013 grinding enamel to 1mm using a mortar 3 And (3) particle size particles, namely, taking tooth enamel as a sample to be detected. During detection, enamel particles are required to be quantitatively weighed and evenly spread on a sample tray for measurement.
S102, the sample to be detected is faced to a light detector, and a light-emitting technology reading instrument is used for detecting and recording a light-emitting curve C0; when the light-emitting technology reading instrument is a thermoluminescence reading instrument, the heating temperature is 50-360 ℃; the preheating temperature is 50 ℃; the preheating time is 10 seconds; the temperature rising rate is 5 ℃/s.
S103, carrying out first supplementary irradiation on the to-be-detected by using the irradiation source which is the same as the irradiation source irradiated by the irradiated personnel, wherein the irradiation dose is 1Gy; the detection is performed by using a light-emitting technology readout instrument, and a light-emitting curve C1 is recorded.
S104, carrying out secondary supplementary irradiation on the to-be-detected by using the irradiation source which is the same as the irradiation source irradiated by the irradiated personnel, wherein the irradiation dose is 2Gy; the detection is performed by using a light-emitting technology readout instrument, and a light-emitting curve C2 is recorded.
S105, carrying out third supplementary irradiation on the to-be-detected by using the irradiation source which is the same as the irradiation source irradiated by the irradiated personnel, wherein the irradiation dose is 3Gy; the detection is performed by using a light-emitting technology readout instrument, and a light-emitting curve C3 is recorded.
S106, obtaining the luminous intensity Q0, the luminous intensity Q1, the luminous intensity Q2 and the luminous intensity Q3 according to the luminous curve C0, the luminous curve C1, the luminous curve C2 and the luminous curve C3.
The luminous intensity is obtained by utilizing a luminous curve and is realized by the following formula:
Q＝∑i
where Q is the total luminous intensity, i is the luminous intensity of each point in the luminous curve C.
After the luminous intensity is obtained, the method further comprises the step of adjusting the time attenuation of the luminous intensity, wherein the time attenuation is adjusted through the following formula:
Q t ＝Q 0 *y
wherein y=y 0 +Aexp(-t/t 0 ) The method comprises the steps of carrying out a first treatment on the surface of the y is the coefficient of the original signal attenuated by the signal of the luminous intensity after the time t; y is 0 ＝0.66，A＝0.33，t 0 ＝17.16。
S107, further, the radiation dose is determined based on the light emission intensity Q0, the light emission intensity Q1, the light emission intensity Q2, and the light emission intensity Q3.
Example 4
In order to achieve the above object, the present invention provides a radiation dose evaluation method based on a light emission technique, the method comprising:
s101, acquiring tooth enamel of an irradiated person on site to serve as a sample to be detected, and storing the sample in a dark place.
Methods for in situ acquisition of tooth enamel of an irradiated person as a sample to be tested include,
s1011, cleaning the tooth surface of the irradiated person and removing the stain covered on the surface; polishing can be performed if necessary;
s1012, crushing teeth, and taking enamel parts;
s1013 grinding enamel to 1mm using a mortar 3 And (3) particle size particles, namely, taking tooth enamel as a sample to be detected. During detection, enamel particles are required to be quantitatively weighed and evenly spread on a sample tray for measurement.
S102, the sample to be detected is faced to a light detector, and a light-emitting technology reading instrument is used for detecting and recording a light-emitting curve C0; when the light-emitting technology reading instrument is a light-emitting reading instrument, the excitation light source of the light-emitting reading instrument can be a blue light source, the wavelength is 470+/-30 nm, and the measurement time is 100 seconds.
S103, carrying out first supplementary irradiation on the to-be-detected by using the irradiation source which is the same as the irradiation source irradiated by the irradiated personnel, wherein the irradiation dose is 1Gy; the detection is performed by using a light-emitting technology readout instrument, and a light-emitting curve C1 is recorded.
S104, carrying out secondary supplementary irradiation on the to-be-detected by using the irradiation source which is the same as the irradiation source irradiated by the irradiated personnel, wherein the irradiation dose is 2Gy; the detection is performed by using a light-emitting technology readout instrument, and a light-emitting curve C2 is recorded.
S105, carrying out third supplementary irradiation on the to-be-detected by using the irradiation source which is the same as the irradiation source irradiated by the irradiated personnel, wherein the irradiation dose is 3Gy; the detection is performed by using a light-emitting technology readout instrument, and a light-emitting curve C3 is recorded.
S106, obtaining the luminous intensity Q0, the luminous intensity Q1, the luminous intensity Q2 and the luminous intensity Q3 according to the luminous curve C0, the luminous curve C1, the luminous curve C2 and the luminous curve C3.
The luminous intensity is obtained by utilizing a luminous curve and is realized by the following formula:
Q＝∑i
where Q is the total luminous intensity, i is the luminous intensity of each point in the luminous curve C.
After the luminous intensity is obtained, the method further comprises the step of adjusting the time attenuation of the luminous intensity, wherein the time attenuation is adjusted through the following formula:
Q t ＝Q 0 *y
wherein y=y 0 +Aexp(-t/t 0 ) The method comprises the steps of carrying out a first treatment on the surface of the y is the coefficient of the original signal attenuated by the signal of the luminous intensity after the time t; y is 0 ＝0.66，A＝0.33，t 0 =17.16, correlation coefficient r 2 ＝0.9206。
In a specific implementation process, if the sample volume allows, a set of attenuation curves can be measured separately, and more specific time correction can be performed by using the attenuation curves, so that more accurate detection results can be obtained. When the attenuation curve is measured alone, in the case where the model and lot of the device as the base sample can be determined, the measurement can be performed with a sample that is identical to the model and lot of the device as the base sample. When the attenuation curve is measured alone, in the case where the model and lot of the original device are difficult to determine, a sample with a large irradiation dose is preferable for measurement. The length of the observation time covers at least 3 times the first luminescence detection from the time of the sample's accidental irradiation when the decay curve is measured alone.
S107, further, the radiation dose is determined based on the light emission intensity Q0, the light emission intensity Q1, the light emission intensity Q2, and the light emission intensity Q3.
In a specific implementation process, the same irradiation conditions are adopted to irradiate the common LiF, mg, cu and P dose detectors and the resistor proposed by the method by 0.5Gy, 1Gy, 2Gy and 3Gy; the standard dose reader is adopted for reading the LiF, mg, cu and P dose detectors, the method is adopted for dose evaluation on the resistor, and the relative deviation of 4 groups of evaluation results is less than 6.5%.
Aiming at the problem that personnel often do not carry personal radiation dosimeters under emergency conditions and cannot quickly evaluate the radiation dose of irradiated personnel, the invention utilizes materials such as resistor ceramics embedded in mobile phones or other articles which are often carried by people, can absorb energy under the action of rays to generate energy level transition, can be detected by a light-emitting method, and further can evaluate the principle of the irradiated dose to quickly evaluate the radiation dose of the irradiated personnel which do not carry the personal radiation dosimeters under emergency conditions. Has the technical effects of high detection speed, good dosimetry property, simple operation and the like.
Finally, it should be noted that the above-mentioned embodiments are merely for illustrating the technical solution of the present invention and not for limiting the same, and although the present invention has been described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that modifications and equivalents may be made to the technical solution of the present invention without departing from the spirit and scope of the technical solution of the present invention.
Claims (10)
1. A radiation dose estimation method based on a luminescence technique, the method comprising:
the method comprises the steps of obtaining a surface patch resistor in electronic equipment carried by an irradiated person on site as a sample to be detected, and storing the sample in a dark place;
the sample to be detected is faced to the light detector, and is detected by a light-emitting technology reading instrument, and a light-emitting curve C0 is recorded;
performing first supplementary irradiation on the to-be-detected by using an irradiation source which is the same as the irradiation source irradiated by the irradiated personnel, wherein the irradiation dose is 1Gy; detecting by using a light-emitting technology reading instrument, and recording a light-emitting curve C1;
performing secondary supplementary irradiation on the to-be-detected by using an irradiation source which is the same as the irradiation source irradiated by the irradiated personnel, wherein the irradiation dose is 2Gy; detecting by using a light-emitting technology reading instrument, and recording a light-emitting curve C2;
performing third supplementary irradiation on the to-be-detected by using the irradiation source which is the same as the irradiation source irradiated by the irradiated personnel, wherein the irradiation dose is 3Gy; detecting by using a light-emitting technology reading instrument, and recording a light-emitting curve C3;
acquiring luminous intensity Q0, luminous intensity Q1, luminous intensity Q2 and luminous intensity Q3 according to the luminous curve C0, the luminous curve C1, the luminous curve C2 and the luminous curve C3;
further, the radiation dose is determined based on the light emission intensity Q0, the light emission intensity Q1, the light emission intensity Q2, and the light emission intensity Q3.
2. A radiation dose estimation method based on a luminescence technique, the method comprising:
acquiring tooth enamel of an irradiated person on site as a sample to be detected, and storing the sample in a dark place;
the sample to be detected is faced to the light detector, and is detected by a light-emitting technology reading instrument, and a light-emitting curve C0 is recorded;
performing first supplementary irradiation on the to-be-detected by using an irradiation source which is the same as the irradiation source irradiated by the irradiated personnel, wherein the irradiation dose is 1Gy; detecting by using a light-emitting technology reading instrument, and recording a light-emitting curve C1;
performing secondary supplementary irradiation on the to-be-detected by using an irradiation source which is the same as the irradiation source irradiated by the irradiated personnel, wherein the irradiation dose is 2Gy; detecting by using a light-emitting technology reading instrument, and recording a light-emitting curve C2;
performing third supplementary irradiation on the to-be-detected by using the irradiation source which is the same as the irradiation source irradiated by the irradiated personnel, wherein the irradiation dose is 3Gy; detecting by using a light-emitting technology reading instrument, and recording a light-emitting curve C3;
acquiring luminous intensity Q0, luminous intensity Q1, luminous intensity Q2 and luminous intensity Q3 according to the luminous curve C0, the luminous curve C1, the luminous curve C2 and the luminous curve C3;
further, the radiation dose is determined based on the light emission intensity Q0, the light emission intensity Q1, the light emission intensity Q2, and the light emission intensity Q3.
3. The radiation dose estimation method according to claim 1, wherein when the luminescence technology readout apparatus is a luminescence readout apparatus, an excitation light source of the luminescence readout apparatus is a blue light source, a wavelength is 470±30nm, and a measurement time is 100 seconds.
4. The radiation dose estimation method based on the luminescence technology according to claim 1, wherein when the luminescence technology readout instrument is a pyroelectric readout instrument, the heating temperature is 50 ℃ to 360 ℃; the preheating temperature is 50 ℃; the preheating time is 10 seconds; the temperature rising rate is 5 ℃/s.
5. The radiation dose estimation method based on the luminescence technology as claimed in claim 1, wherein the luminescence intensity is obtained by using a luminescence curve by the following formula:
Q＝∑i
where Q is the total luminous intensity, i is the luminous intensity of each point in the luminous curve C.
6. The method of claim 1, further comprising adjusting the time decay of the luminous intensity after the luminous intensity is obtained, the adjusting of the time decay being achieved by the following formula:
Q t ＝Q 0 *y
wherein y=y 0 +Aexp(-t/t 0 ) The method comprises the steps of carrying out a first treatment on the surface of the y is the coefficient of the original signal attenuated by the signal of the luminous intensity after the time t; y is 0 ＝0.66，A＝0.33，t 0 =17.16; t is the time in hours of irradiation to the pyroelectric measurement interval.
7. The method for evaluating the radiation dose based on the light emitting technology according to claim 1, further comprising a step of mechanically polishing solder at both ends of the surface mount resistor in the electronic device carried by the person to be irradiated before the surface mount resistor in the electronic device carried by the person to be irradiated is obtained as the sample to be detected on site.
8. The radiation dose estimation method based on the light emitting technology according to claim 1, wherein the surface mount resistor in the electronic device carried by the person to be irradiated is obtained on site as the sample to be detected, and the surface mount resistor in the electronic device carried by the person to be irradiated, which is close to the housing of the electronic device, is selected as the sample to be detected.
9. The radiation dose evaluation method based on the light emitting technology according to claim 1, wherein the surface mount resistor in the electronic device carried by the irradiated person is obtained on site as the sample to be detected, and the surface mount resistor with the largest volume in the surface mount resistor in the electronic device carried by the irradiated person is selected as the sample to be detected.
10. The method for evaluating the radiation dose based on the light-emitting technology according to claim 2, wherein the method for obtaining the tooth enamel of the irradiated person on site as the sample to be detected comprises,
cleaning the tooth surface of the irradiated person to remove stains covered on the surface;
breaking up the teeth and taking enamel parts;
enamel was ground to 1mm using a mortar 3 And (3) particle size particles, namely, taking tooth enamel as a sample to be detected.
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