ASTM C1030-2003 用γ射线光谱法测定钚同位素成分的标准试验方法

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【英文标准名称】:StandardTestMethodforDeterminationofPlutoniumIsotopicCompositionbyGamma-RaySpectrometry
【原文标准名称】:用γ射线光谱法测定钚同位素成分的标准试验方法
【标准号】:ASTMC1030-2003
【标准状态】:现行
【国别】:
【发布日期】:2003
【实施或试行日期】:
【发布单位】:美国材料与试验协会(US-ASTM)
【起草单位】:C26.10
【标准类型】:(TestMethod)
【标准水平】:()
【中文主题词】:核技术;核能;光谱测定法;测定;试验;额定值;钚
【英文主题词】:gammaradiation;germaniumdetectors;isotopicanalysis;plutonium;spectrometry-gamma-ray;plutoniumisotopiccomposition,bygamma-rayspectrometry,test
【摘要】:Thedeterminationofisotopiccompositionbygamma-rayspectrometryisanondestructivetechniqueandwhenusedwithothernondestructivetechniques,suchascalorimetry(TestMethodC1458)orneutroncounting(TestMethodsC1207C1493C1500),canprovideatotallynondestructiveplutoniumassaynecessaryformaterialaccountancyandsafeguardsneeds.Sincegamma-rayspectrometrysystemsaretypicallyautomated,theroutineuseofthetestmethodisfast,reliable,andisnotlaborintensive.Sincethetestmethodisnondestructive,requiringnosamplepreparation,itdoesnotcreatewastedisposalproblems.Thistestmethodassumesthattheisotopiccompositionofplutoniuminthesamplebeingmeasuredishomogeneous(seesee7.2.4and(5)).The242Puabundanceisnotmeasuredbythistestmethodandmustbeestimatedfromisotopiccorrelationtechniques,streamaverages,historicalinformation,orothermeasurementtechniques.Adaughterproductof241Puis241Am.The241Am/239Puatomratiocanalsobedeterminedbymeansofthistestmethod(assumingahomogeneousisotopicdistributionofplutoniumand241Am)andisnecessaryforthecorrectinterpretationofacalorimetricheatmeasurement.Theisotopiccompositionofagivenbatchorsampleofplutoniumisanattributeofthatsampleand,oncedetermined,canbeusedinsubsequentinventorymeasurementstoverifytheidentityofasamplewithinthemeasurementuncertainties.Themethodcanalsomeasuretheratioofothergammaemitingisotopestoplutoniumassumingtheyhavethesamespatialdistributionastheplutoniuminthesample.Someofthesex201C;otherx201D;gamma-emittingisotopesincludeisotopesofuranium,neptium,curium,cesium,andotherfissionproducts.(Thesamemethodsofthisstandardcanbeusedtomeasuretheisotopiccompositionofuraniuminsamplescontainingonlyuranium(4x2013;6)).1.1ThistestmethodisapplicabletothedeterminationofisotopicabundancesinisotopicallyhomogeneousPu-bearingmaterials.Thistestmethodmaybeapplicabletootherplutonium-bearingmaterials,someofwhichmayrequiremodificationstothedescribedtestmethod.1.2Theprocedureisapplicabletosamplesizesrangingfromafewtenthsofagramuptothemaximumsampleweightallowedbycriticalitylimits.1.3Because242Puhasnousefulgamma-raysignature,itsisotopicabundanceisnotdetermined.Isotopiccorrelationtechniquesmaybeusedtoestimateitsrelativeabundance(Refs1,2).1.4Thistestmethodhasbeendemonstratedinroutineuseforisotopicabundancesrangingfrom94to70%239Pu.Thistestmethodhasalsobeenemployedforisotopicabundancesoutsidethisrange.1.5ThevaluesstatedinSIunitsaretoberegardedasthestandard.1.6Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappropriatesafetyandhealthpracticesanddeterminetheapplicabilityofregulatorylimitationspriortouse.
【中国标准分类号】:F50
【国际标准分类号】:27_120_30
【页数】:7P.;A4
【正文语种】: