基于数值解析方法的γ能谱无源效率刻度方法研究

TL817; 以理论分析和数值计算为基础,建立了一种基于数值解析的无源效率刻度方法.构建了?3.8 cm×3.8 cm的LaBr 3(Ce)和NaI(Tl)探测器几何模型,分析了γ射线与探测器的作用路径、源与探测器相对位置和峰总比等因素,并提出非同轴点源本征效率计算公式.据此,将点源效率的数值计算拓展至面源和体源效率计算,以辛普森算法为基础对数值积分进行求解,并利用数值解析公式计算各向同性的137Cs点源、面源和体源探测效率,与蒙特卡罗模拟结果相比相对偏差不超过3.5%;对不同位置处点源和不同尺寸面源、体源效率进行计算,与蒙特卡罗模拟结果相比相对偏差不超过4%.结果表明,基于数值解析的无源效率...

Celý popis

Uložené v:
Podrobná bibliografia
Vydané v:核技术 Ročník 47; číslo 9; s. 43 - 52
Hlavní autori: 叶二雷, 沈春霞, 南宏杰, 来永芳
Médium: Journal Article
Jazyk:Chinese
Vydavateľské údaje: 陆军防化学院 北京 102205 01.09.2024
Predmet:
ISSN:0253-3219
On-line prístup:Získať plný text
Tagy: Pridať tag
Žiadne tagy, Buďte prvý, kto otaguje tento záznam!
Abstract TL817; 以理论分析和数值计算为基础,建立了一种基于数值解析的无源效率刻度方法.构建了?3.8 cm×3.8 cm的LaBr 3(Ce)和NaI(Tl)探测器几何模型,分析了γ射线与探测器的作用路径、源与探测器相对位置和峰总比等因素,并提出非同轴点源本征效率计算公式.据此,将点源效率的数值计算拓展至面源和体源效率计算,以辛普森算法为基础对数值积分进行求解,并利用数值解析公式计算各向同性的137Cs点源、面源和体源探测效率,与蒙特卡罗模拟结果相比相对偏差不超过3.5%;对不同位置处点源和不同尺寸面源、体源效率进行计算,与蒙特卡罗模拟结果相比相对偏差不超过4%.结果表明,基于数值解析的无源效率刻度方法具有快速的优势,可代替实验测量或者蒙特卡罗(Monte Carlo,MC)软件仿真效率刻度方法.该方法能推广至不同形状核辐射探测器效率刻度,为探测器效率刻度提供了新的途径.
AbstractList TL817; 以理论分析和数值计算为基础,建立了一种基于数值解析的无源效率刻度方法.构建了?3.8 cm×3.8 cm的LaBr 3(Ce)和NaI(Tl)探测器几何模型,分析了γ射线与探测器的作用路径、源与探测器相对位置和峰总比等因素,并提出非同轴点源本征效率计算公式.据此,将点源效率的数值计算拓展至面源和体源效率计算,以辛普森算法为基础对数值积分进行求解,并利用数值解析公式计算各向同性的137Cs点源、面源和体源探测效率,与蒙特卡罗模拟结果相比相对偏差不超过3.5%;对不同位置处点源和不同尺寸面源、体源效率进行计算,与蒙特卡罗模拟结果相比相对偏差不超过4%.结果表明,基于数值解析的无源效率刻度方法具有快速的优势,可代替实验测量或者蒙特卡罗(Monte Carlo,MC)软件仿真效率刻度方法.该方法能推广至不同形状核辐射探测器效率刻度,为探测器效率刻度提供了新的途径.
Abstract_FL [Background]Efficiency calibration is an important prerequisite for γ-spectroscopy measurement,and its accuracy directly affects the reliability of measurement results.The commonly used efficiency calibration methods are active efficiency calibration based on experimental measurement and passive efficiency calibration based on Monte Carlo(MC)simulations.[Purpose]This study aims to propose a sourceless efficiency calibration method for γ spectrum based on numerical analysis.[Methods]Based on theoretical analysis and numerical calculation,a passive efficiency calibration method based on numerical analysis was established,and applied to a constructed geometric model for typical cylindrical LaBr3(Ce)and NaI(Tl)detector with a diameter and length of 3.8 cm.The γ-ray path trajectory inside the detector,relative position of the source and detector,and peak-to-total ratio were comprehensively analyzed.Efficiency formulas for radioactive point,surface,and volume radioactive sources were formulated.Then,a numerical integration program based on Simpson's algorithm was implemented in MATLAB to solve the numerical analytical formula,and applied to the calculation of detection efficiencies of the 3.8 cm cylindrical LaBr3(Ce)and NaI(Tl)detectors for isotropic 137Cs point,surface,and volume sources.The calculation was performed again by changing the position of the point source and the size of the surface and volume sources.Simultaneously,the Monte Carlo(MC)simulation software MCNP5 was employed to establish the physical model of the detector,and the F8 pulse amplitude card was used to calculate the detection efficiency of the detector for specific energy γ-rays.Finally,detection efficiency obtained by numerical calculation was compared with that of MC simulation to verify the efficiency of proposed sourceless efficiency calibration method for γ spectrum.[Results]Compared with the MC simulation results,the maximum error of numerical calculation does not exceed 3.5%,and the maximum relative errors of the point source efficiency,surface source efficiency and volume source efficiency are 3.26%,3.33%and 3.36%,repectively,which proves the reliability and accuracy of the numerical analysis method in calculating the detection efficiency.[Conclusions]The passive efficiency calibration method proposed in this study is accurate and fast,avoids complicated MC simulation software,which tends to be difficult to understand and operate.Additionally,this work can be extended to the efficiency calibration of nuclear radiation detectors with different shapes,providing a new pathway for the efficiency calibration of detectors.
Author 来永芳
叶二雷
南宏杰
沈春霞
AuthorAffiliation 陆军防化学院 北京 102205
AuthorAffiliation_xml – name: 陆军防化学院 北京 102205
Author_FL SHEN Chunxia
YE Erlei
LAI Yongfang
NAN Hongjie
Author_FL_xml – sequence: 1
  fullname: YE Erlei
– sequence: 2
  fullname: SHEN Chunxia
– sequence: 3
  fullname: NAN Hongjie
– sequence: 4
  fullname: LAI Yongfang
Author_xml – sequence: 1
  fullname: 叶二雷
– sequence: 2
  fullname: 沈春霞
– sequence: 3
  fullname: 南宏杰
– sequence: 4
  fullname: 来永芳
BookMark eNo9j81Kw0AUhWdRwbb6FoKrjDeZGTN3WYp_UHDTfZlkMkqQFAziVlCwq9KFUXChBUFxVykIRn0Fn8JM8hhGLK7O4hy-w9cijWSYRISsu0BdV0rciCl4gjnMc5F64HF6GKeU-xQQPOAN0vyvl0krTWMAjsBFk3SK-_w7H9tsVpx9VE8P9m5ir9_sPCtvL77m1flnNXuxN1ObT2w2KseXxei9yB8Xk-lV-fy6QpaMOkqj1UW2SX97q9_ddXr7O3vdTs9JEYWjfIk6jHQABhlEWvnc5zr0A2AaRKgDlJGRASjDIOAmZKiEGxltcFNyNMDaZO0Pe6oSo5KDQTw8OU7qw0Gt-qtcq4JgP8dmZuo
ClassificationCodes TL817
ContentType Journal Article
Copyright Copyright © Wanfang Data Co. Ltd. All Rights Reserved.
Copyright_xml – notice: Copyright © Wanfang Data Co. Ltd. All Rights Reserved.
DBID 2B.
4A8
92I
93N
PSX
TCJ
DOI 10.11889/j.0253-3219.2024.hjs.47.090204
DatabaseName Wanfang Data Journals - Hong Kong
WANFANG Data Centre
Wanfang Data Journals
万方数据期刊 - 香港版
China Online Journals (COJ)
China Online Journals (COJ)
DatabaseTitleList
DeliveryMethod fulltext_linktorsrc
Discipline Engineering
DocumentTitle_FL Sourceless efficiency calibration method for γ spectrum based on numerical analysis
EndPage 52
ExternalDocumentID hjs202409005
GroupedDBID -03
2B.
4A8
5XA
5XD
92H
92I
93N
ABJNI
ACGFS
ALMA_UNASSIGNED_HOLDINGS
CCEZO
CEKLB
CW9
GROUPED_DOAJ
PSX
TCJ
TGT
U1G
U5M
ID FETCH-LOGICAL-s995-a789dcedb0f930eda7474dc7b03d05cdb98ef8b0af30b4fc39a51efdf96849f03
ISSN 0253-3219
IngestDate Thu May 29 03:54:29 EDT 2025
IsPeerReviewed true
IsScholarly true
Issue 9
Keywords 圆柱体探测器
数值解析
Numerical analysis
Efficiency calibration
Cylinder detector
辛普森算法
效率刻度
蒙特卡罗模拟
Monte Carlo simulation
Simpson's algorithm
Language Chinese
LinkModel OpenURL
MergedId FETCHMERGED-LOGICAL-s995-a789dcedb0f930eda7474dc7b03d05cdb98ef8b0af30b4fc39a51efdf96849f03
PageCount 10
ParticipantIDs wanfang_journals_hjs202409005
PublicationCentury 2000
PublicationDate 2024-09-01
PublicationDateYYYYMMDD 2024-09-01
PublicationDate_xml – month: 09
  year: 2024
  text: 2024-09-01
  day: 01
PublicationDecade 2020
PublicationTitle 核技术
PublicationTitle_FL Nuclear Techniques
PublicationYear 2024
Publisher 陆军防化学院 北京 102205
Publisher_xml – name: 陆军防化学院 北京 102205
SSID ssj0049045
ssib001129530
ssib051373102
ssib023167186
ssib001526398
Score 2.4142473
Snippet TL817; 以理论分析和数值计算为基础,建立了一种基于数值解析的无源效率刻度方法.构建了?3.8 cm×3.8 cm的LaBr 3(Ce)和NaI(Tl)探测器几何模型,分析了γ射线与探测器的作用路...
SourceID wanfang
SourceType Aggregation Database
StartPage 43
Title 基于数值解析方法的γ能谱无源效率刻度方法研究
URI https://d.wanfangdata.com.cn/periodical/hjs202409005
Volume 47
hasFullText 1
inHoldings 1
isFullTextHit
isPrint
journalDatabaseRights – providerCode: PRVAON
  databaseName: Directory of Open Access Journals
  issn: 0253-3219
  databaseCode: DOA
  dateStart: 20130101
  customDbUrl:
  isFulltext: true
  dateEnd: 99991231
  titleUrlDefault: https://www.doaj.org/
  omitProxy: false
  ssIdentifier: ssj0049045
  providerName: Directory of Open Access Journals
link http://cvtisr.summon.serialssolutions.com/2.0.0/link/0/eLvHCXMwtR1Na9RAdKhVRA_iJ35VenDwUHadzWQy845JNsVT8dBDb2Xz1SpllW4txZOgYE-lB6vgQQuC4q1SEFz1L_gr3LQ_w_cm2W38wI-Dl-Ex73tekjdJZt4wdhUyN7UlhjJNvxndGBoxxFlDuCkkItGY44U9bELPzJi5Obg5dmhhuBdmdUl3u2ZtDe7-11BjHwabts7-Q7hHQrEDYQw6thh2bP8q8DxSHKZ54PPIpdZEPPI4KB4IQhnBg5BHhvua-9KiIg7CAh4PgIBAEn2kOSC7y8OIepDFSB60CUBRQcuyoBDLi4oqIajCEC_qNdpqRPqAAKTxvV8rQiHgWgB44NVnzESG2MAQYHyynySE3B-tSbZK0GNv6DH6BxwCHugDElTmWMuQGZ1XliRE57-T0iaPEPAjkki0bXS2LgU7iNmzY2DsqPjoR_3rieOOloeV17vVBdx4VodHplGPIZOoJ6QRIa1tO0CW2Hemhjhd-eWHUy27Zbn29HaUbMhhPqhSTVlctLqloJY3ylJV1QykLOn7c24zBmxyG4lukkfNxdu9pqubtMC2PMn5hwLiiCc6xFOt38OOVmBq3x7svBlnfar-e1U5Xq0upEPlEloHdQZVS2pp686VUx4XhD0NfGTYUXZtaPH139tr98p18053oTatmz3JTlTvY5N-eR-dYmP3F0-z47UqnWeYP3jZ_9rfKLZ2Bg8-7b95VbzYLJ5-KHa39p4_-rK7__Dz_s674tl20d8sttb3Nh4P1j8O-q8rku0ne2_fn2Wz09FseKNRnTzS6FHFgo42kCZZGoscpMjSDr5zu2miYyFToZI0BpPlJhadXIrYzRMJHdXK8jQHz7iQC3mOjXfvdLPzbFLJFIcBVKJBuWkGSKGklwkNkCgZiwtsovJ_vnqG9ObrAbv4B_wlduzgsr7MxleW72UT7EiyunKrt3zFRvkbKw2ULQ
linkProvider Directory of Open Access Journals
openUrl ctx_ver=Z39.88-2004&ctx_enc=info%3Aofi%2Fenc%3AUTF-8&rfr_id=info%3Asid%2Fsummon.serialssolutions.com&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.genre=article&rft.atitle=%E5%9F%BA%E4%BA%8E%E6%95%B0%E5%80%BC%E8%A7%A3%E6%9E%90%E6%96%B9%E6%B3%95%E7%9A%84%CE%B3%E8%83%BD%E8%B0%B1%E6%97%A0%E6%BA%90%E6%95%88%E7%8E%87%E5%88%BB%E5%BA%A6%E6%96%B9%E6%B3%95%E7%A0%94%E7%A9%B6&rft.jtitle=%E6%A0%B8%E6%8A%80%E6%9C%AF&rft.au=%E5%8F%B6%E4%BA%8C%E9%9B%B7&rft.au=%E6%B2%88%E6%98%A5%E9%9C%9E&rft.au=%E5%8D%97%E5%AE%8F%E6%9D%B0&rft.au=%E6%9D%A5%E6%B0%B8%E8%8A%B3&rft.date=2024-09-01&rft.pub=%E9%99%86%E5%86%9B%E9%98%B2%E5%8C%96%E5%AD%A6%E9%99%A2+%E5%8C%97%E4%BA%AC+102205&rft.issn=0253-3219&rft.volume=47&rft.issue=9&rft.spage=43&rft.epage=52&rft_id=info:doi/10.11889%2Fj.0253-3219.2024.hjs.47.090204&rft.externalDocID=hjs202409005
thumbnail_s http://cvtisr.summon.serialssolutions.com/2.0.0/image/custom?url=http%3A%2F%2Fwww.wanfangdata.com.cn%2Fimages%2FPeriodicalImages%2Fhjs%2Fhjs.jpg