作者:标准资料网 时间:2024-05-02 15:45:01   浏览:8651   来源:标准资料网

【英文标准名称】:Referencebetaradiationsforcalibratingdosimetersanddose-ratemetersandfordeterminingtheirresponseasafunctionofbeta-radiationenergy
【原文标准名称】:校准剂量仪和剂量率仪及确定其β辐射能量响应的β参考辐射
【标准号】:ISO6980-1996
【标准状态】:作废
【国别】:国际
【发布日期】:1996-10
【实施或试行日期】:
【发布单位】:国际标准化组织(IX-ISO)
【起草单位】:ISO/TC85
【标准类型】:()
【标准水平】:()
【中文主题词】:核动力;β辐射;基准源;校正;剂量计;辐射测量;剂量测定;核能;规范;辐射;β粒子;辐照率表;定义
【英文主题词】:Betaradiation;Beta-particles;Calibration;Definition;Definitions;Dosequantities;Dosimeters;Dosimetry;Exposure-ratemeters;Nuclearenergy;Nuclearpower;Radiation;Radiationmeasurement;Referencesources;Specifications
【摘要】:ThisInternationalStandardspecifiestherequirementsforreferencebetaradiationsproducedbyradionuclidesourcestobeusedforthecalibrationofprotectionleveldosimetersanddose-ratemeters,andforthedeterminationoftheirresponseasafunctionofbetaparticleenergy.Itgivesthecharacteristicsofradionuclideswhichhavebeenusedtoproducereferencebetaradiations,givesexamplesofsuitablesourceconstructionsanddescribesmethodsforthemeasurementoftheresidualmaximumbetaparticleenergyandthedose-equivalentrateatadepthof7mg·cmintheICRUsphere.Theenergyrangeinvolvedliesbetween66keVand3,6MeVandtheabsorbeddoseratesareintherangefromabout10μSv·htoatleast10Sv·h.Inaddition,forsomesourcesvariationsoftheabsorbeddoserateasafunctionoftheangleofincidencearegiven.ThisInternationalStandardproposestwoseriesofreferencebetaradiationsfromwhichtheradiationnecessaryfordeterminingthecharacteristics(calibrationandenergyresponse)ofaninstrumentshouldbeselected.Series1referenceradiationsareproducedbyradionuclidesourcesusedwithbeam-flatteningfiltersdesignedtogiveuniformdoseratesoveralargeareaataspecifieddistance.TheproposedsourcesofSr+Y,TIandPmproducemaximumdoseratesofapproximately5mSv·h.Series2referenceradiationsareproducedwithouttheuseofbeam-flatteningfilters,whichallowsplanarsourcesoflargeareaandarangeofsource-to-calibrationplanedistancestobeused.Closetothesources,onlyrelativelysmallareasofuniformdoserateareproduced,butthisSerieshastheadvantageofextendingtheenergyanddoseraterangesbeyondthoseofSeries1.TheradionuclidesusedarethoseofSeries1withtheadditionoftheradionuclidesCandRu+Rh;thesesourcesproducedoseratesofupto10Sv·h.note:1)Thesealsoincludepersonaldosimeters.2)Thislowerlimitoftheenergiestobeconsideredrepresentstheenergyofbetaparticlesabletoreachthesensitivelayeroftheskinwhichissituatednominally7mg·cmbelowtheskinsurfaceaccordingtoICRP60.
【中国标准分类号】:A58
【国际标准分类号】:17_240
【页数】:15P.;A4
【正文语种】:英语