CN108196293A - One kind is based on scintillator detector dosage rate detection method - Google Patents

One kind is based on scintillator detector dosage rate detection method Download PDF

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Publication number
CN108196293A
CN108196293A CN201810209495.7A CN201810209495A CN108196293A CN 108196293 A CN108196293 A CN 108196293A CN 201810209495 A CN201810209495 A CN 201810209495A CN 108196293 A CN108196293 A CN 108196293A
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measured
section
pulsewidth
scintillator detector
sections
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CN108196293B (en
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张海平
范美仁
高永涛
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Cnpec Kaidani Polytron Technologies Inc
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Cnpec Kaidani Polytron Technologies Inc
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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
    • G01T1/023—Scintillation dose-rate meters

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  • Physics & Mathematics (AREA)
  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • General Physics & Mathematics (AREA)
  • High Energy & Nuclear Physics (AREA)
  • Molecular Biology (AREA)
  • Spectroscopy & Molecular Physics (AREA)
  • Measurement Of Radiation (AREA)

Abstract

The present invention discloses a kind of based on scintillator detector dosage rate detection method, this method is in unit measuring section, according to different pulse characteristics, different pulse widths is divided into three sections, count the counting in each pulsewidth section, calculate the reference radiation calibration factor of corresponding pulsewidth so that required radiation dose rate measurement error smaller to be measured, more accurate.

Description

One kind is based on scintillator detector dosage rate detection method
Technical field
The present invention relates to nuclear radiation detection more particularly to applied in X, gamma Rays dosage field of detecting.
Background technology
Due to ray radiant energy difference, the electric impulse signal width t that scintillator detector is converted out is also different, corresponding institute The reference radiation calibration factor Y asked is also different.In scintillator detector radiation dose rate measuring technique, radiation dose rate to be measured H*It is related with the step-by-step counting N and reference radiation calibration factor Y that unit interval counts on.And traditional scintillator detector spoke Penetrate Dose rate measurement method be then in order to reduce survey calculation amount, to different-energy pulsewidth all with same reference radiation calibrate because Sub- Y empirical values calculate required radiation dose rate H*, eventually lead to radiation dose rate H to be measured*Measurement error is big, inaccurate.
Invention content
In view of the above-mentioned deficiencies in the prior art, the purpose of the present invention is to propose to one kind to be based on scintillator detector agent Dose rate detection method.The detection method feature is in unit measuring section, according to different pulse characteristics, by different arteries and veins It rushes width and is divided into three sections, count the counting in each pulsewidth section, calculate the reference radiation calibration factor of corresponding pulsewidth, make Required radiation dose rate measurement error smaller to be measured, more accurate.
The technical scheme is that：One kind is based on scintillator detector dosage rate detection method, step：1. due to spoke It is directly proportional to pulse signal width to penetrate energy size, it, can will be after the interaction of scintillator and ray in unit measuring section T The electric impulse signal converted out is divided into three sections according to different pulse signal widths；
2. being measured in reference instrument respectively three times, count and three pulsewidths are corresponded in each unit measuring section T The step-by-step counting N in sectiontn, wherein three pulsewidth section t=1,2,3, pendulous frequency n=1,2,3, i.e., measure what is counted three times It is respectively N that three distinct pulse widths, which count,11、N21、N31, N12、N22、N32, N13、N23、N33；
3. the radiation dose rate measured in the known reference instrument three times is respectively H1、H2、H3, surveyed described three times Measure the step-by-step counting N corresponding to the three section pulsewidths counted1n、N2n、N3nSubstitution formula Hn=N1n*Y1+N2n*Y2+N3n*Y3In, Ternary linear function group is formed, the reference radiation calibration factor Y to be measured corresponding to these three pulsewidth sections is obtainedt, wherein three Pulsewidth section t=1,2,3, ternary linear function group is as follows：
Ternary linear function group is solved,
4. in unit measuring section T, measure corresponding to three pulsewidth sections in statistics scintillator detector instrument Step-by-step counting N1、N2、N3；
5. by required radiometric calibration factor Y in 3.1、Y2、Y34. in three pulsewidths counted are measured in instrument to be measured Step-by-step counting N corresponding to section1、N2、N3Substitution formula H*=N1*Y1+N2*Y2+N3*Y3In, you can it is to be measured that scintillator detector is obtained Dosage rate H*。
In unit measuring section T, the pulse width section measured by scintillator detector is not limited to be divided into three Section, the actual pulse signal width feature that can also be gone out according to different scintillators and radiation detection intensity-conversion are divided.Its Middle pulses of radiation width section hop count divides more, then corresponding required reference radiation calibration factor number is more, then The measured value of scintillator detector radiation dose rate is more accurate.
The advantage of the invention is that：Employ above-mentioned technical solution so that in the detection of scintillator detector dosage rate more It is accurate.For conventional radiation dosage rate detection method, the dosage rate detection method be in unit measuring section, According to different pulse characteristics, different pulse widths is divided into three sections, counts the counting in each pulsewidth section, calculating pair Answer the reference radiation calibration factor of pulsewidth so that required radiation dose rate measurement error smaller to be measured, more accurate.
Description of the drawings
Fig. 1 is the detector radiation dose rate detection method flow chart of the present invention.
Specific embodiment
One kind proposed by the present invention is illustrated such as in conjunction with the accompanying drawings and embodiments based on scintillator detector dosage rate detection method Under.
With reference to figure 1, mainly comprising the following steps for the method for the present invention is used：
It 1., can be by scintillator in unit measuring section T since radiation energy size is directly proportional to pulse signal width The electric impulse signal converted out after interacting from ray can be divided into three sections according to different pulse signal widths；
2. being measured in reference instrument respectively three times, count and three pulsewidths are corresponded in each unit measuring section T The step-by-step counting N in sectiontn, wherein three pulsewidth section t=1,2,3, pendulous frequency n=1,2,3, i.e., measure what is counted three times It is respectively N that three distinct pulse widths, which count,11、N21、N31, N12、N22、N32, N13、N23、N33；
3. the radiation dose rate measured in the known reference instrument three times is respectively H1、H2、H3, surveyed described three times Measure the step-by-step counting N corresponding to the three section pulsewidths counted1n、N2n、N3nSubstitution formula Hn=N1n*Y1+N2n*Y2+N3n*Y3In, Ternary linear function group is formed, the reference radiation calibration factor Y to be measured corresponding to these three pulsewidth sections is obtainedt, wherein three Pulsewidth section t=1,2,3, ternary linear function group is as follows：
Ternary linear function group is solved,
4. in unit measuring section T, measure corresponding to three pulsewidth sections in statistics scintillator detector instrument Step-by-step counting N1、N2、N3；
5. by required radiometric calibration factor Y in 3.1、Y2、Y34. in three pulsewidths counted are measured in instrument to be measured Step-by-step counting N corresponding to section1、N2、N3Substitution formula H*=N1*Y1+N2*Y2+N3*Y3In, you can it is to be measured that scintillator detector is obtained Dosage rate H*。

Claims (2)

1. one kind is based on scintillator detector dosage rate detection method, step：1. due to radiation energy size and pulse signal Width is directly proportional, in unit measuring section T, can by the electric impulse signal converted out after scintillator and ray interaction by Three sections are divided into according to different pulse signal widths；
2. being measured in reference instrument respectively three times, count and three pulsewidth sections are corresponded in each unit measuring section T Step-by-step counting Ntn, wherein three pulsewidth section t=1,2,3, pendulous frequency n=1,2,3, i.e., three counted are measured three times It is respectively N that distinct pulse widths, which count,11、N21、N31, N12、N22、N32, N13、N23、N33；
3. the radiation dose rate measured in the known reference instrument three times is respectively H1、H2、H3, measure system three times by described in The step-by-step counting N corresponding to three section pulsewidths counted out1n、N2n、N3nSubstitution formula Hn=N1n*Y1+N2n*Y2+N3n*Y3In, composition The reference radiation calibration factor Y to be measured corresponding to these three pulsewidth sections is obtained in ternary linear function groupt, wherein three pulsewidths Section t=1,2,3, ternary linear function group is as follows：
Ternary linear function group is solved,
4. in unit measuring section T, pulse corresponding to three pulsewidth sections in statistics scintillator detector instrument is measured Count N1、N2、N3；
5. by required radiometric calibration factor Y in 3.1、Y2、Y34. in the three pulsewidth sections counted are measured in instrument to be measured Corresponding step-by-step counting N1、N2、N3Substitution formula H*=N1*Y1+N2*Y2+N3*Y3In, you can scintillator detector is obtained and treats dose Rate H*。
2. it is based on scintillator detector dosage rate detection method according to claim 1, it is characterised in that：When unit measures Between in section T, the pulse width section measured by scintillator detector is not limited to be divided into three sections, can also be according to different flickers The actual pulse signal width feature that body and radiation detection intensity-conversion go out is divided；Wherein pulses of radiation width section hop count What is divided is more, then corresponding required reference radiation calibration factor number is more, then scintillator detector radiation dose rate Measured value it is more accurate.
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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110456402A (en) * 2019-07-22 2019-11-15 北京云端光科技术有限公司 Dose of radiation detection method and device

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JP2004108796A (en) * 2002-09-13 2004-04-08 Aloka Co Ltd Radiation measurement device
WO2010017218A2 (en) * 2008-08-06 2010-02-11 Mirion Technologies (Gds), Inc. (Formerly Known As Global Dosimetry Solutions, Inc.) Method and apparatus to discriminate out interference in radiation dosage measurements
CN105137469A (en) * 2015-06-03 2015-12-09 南京航空航天大学 Radioactive detection system and radioactive detection method
CN205507100U (en) * 2015-12-14 2016-08-24 上海怡星机电设备有限公司 Environment X, gamma dose rate measuring apparatu
CN106094002A (en) * 2016-07-28 2016-11-09 中国船舶重工集团公司第七〇九研究所 A kind of Miniature Buoy formula water body region gamma activity monitor
CN106125122A (en) * 2016-06-13 2016-11-16 成都新核泰科科技有限公司 Highfield radiation detecting system
CN106873019A (en) * 2017-01-06 2017-06-20 中国科学院高能物理研究所 A kind of radiation dose measurement method
CN107526094A (en) * 2016-06-21 2017-12-29 纪新辉 A kind of modified scintillator detector signal processing circuit
CN107643538A (en) * 2017-10-18 2018-01-30 中国检验检疫科学研究院 A kind of device for being used to verify scintillator detector performance

Patent Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2004108796A (en) * 2002-09-13 2004-04-08 Aloka Co Ltd Radiation measurement device
WO2010017218A2 (en) * 2008-08-06 2010-02-11 Mirion Technologies (Gds), Inc. (Formerly Known As Global Dosimetry Solutions, Inc.) Method and apparatus to discriminate out interference in radiation dosage measurements
CN105137469A (en) * 2015-06-03 2015-12-09 南京航空航天大学 Radioactive detection system and radioactive detection method
CN205507100U (en) * 2015-12-14 2016-08-24 上海怡星机电设备有限公司 Environment X, gamma dose rate measuring apparatu
CN106125122A (en) * 2016-06-13 2016-11-16 成都新核泰科科技有限公司 Highfield radiation detecting system
CN107526094A (en) * 2016-06-21 2017-12-29 纪新辉 A kind of modified scintillator detector signal processing circuit
CN106094002A (en) * 2016-07-28 2016-11-09 中国船舶重工集团公司第七〇九研究所 A kind of Miniature Buoy formula water body region gamma activity monitor
CN106873019A (en) * 2017-01-06 2017-06-20 中国科学院高能物理研究所 A kind of radiation dose measurement method
CN107643538A (en) * 2017-10-18 2018-01-30 中国检验检疫科学研究院 A kind of device for being used to verify scintillator detector performance

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110456402A (en) * 2019-07-22 2019-11-15 北京云端光科技术有限公司 Dose of radiation detection method and device
CN110456402B (en) * 2019-07-22 2021-09-10 北京云端光科技术有限公司 Radiation dose detection method and device

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