Designation:C1030−10StandardTestMethodforDeterminationofPlutoniumIsotopicCompositionbyGamma-RaySpectrometry1ThisstandardisissuedunderthefixeddesignationC1030;thenumberimmediatelyfollowingthedesignationindicatestheyearoforiginaladoptionor,inthecaseofrevision,theyearoflastrevision.Anumberinparenthesesindicatestheyearoflastreapproval.Asuperscriptepsilon(´)indicatesaneditorialchangesincethelastrevisionorreapproval.1.Scope1.1Thistestmethodisapplicabletothedeterminationofisotopicabundancesinisotopicallyhomogeneousplutonium-bearingmaterials.Thistestmethodmaybeapplicabletootherplutonium-bearingmaterials,someofwhichmayrequiremodificationstothedescribedtestmethod.1.2Theprocedureisapplicabletoitemscontainingpluto-niummassesrangingfromafewtensofmilligramsuptothemaximumplutoniummassallowedbycriticalitylimits.1.3Measurablegammarayemissionsfromplutoniumcovertheenergyrangefromapproximately30keVtoabove800keV.K-X-rayemissionsfromplutoniumanditsdaughtersarefoundintheregionaround100keV.Thistestmethodhasbeenappliedtoallportionsofthisbroadspectrumofemissions.1.4Theisotopicabundanceofthe242Puisotopeisnotdirectlydeterminedbecauseithasnousefulgamma-raysignature.IsotopiccorrelationtechniquesmaybeusedtoestimateitsrelativeabundanceRefs(1)and(2).21.5Thistestmethodhasbeendemonstratedinroutineuseforisotopicabundancesrangingfrom99to<50%239Pu.Thistestmethodhasalsobeenemployedforisotopicabundancesoutsidethisrange.1.6ThevaluesstatedinSIunitsaretoberegardedasstandard.Nootherunitsofmeasurementareincludedinthisstandard.1.7Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappro-priatesafetyandhealthpracticesanddeterminetheapplica-bilityofregulatorylimitationspriortouse.2.ReferencedDocuments2.1ASTMStandards:3C697TestMethodsforChemical,MassSpectrometric,andSpectrochemicalAnalysisofNuclear-GradePlutoniumDioxidePowdersandPelletsC698TestMethodsforChemical,MassSpectrometric,andSpectrochemicalAnalysisofNuclear-GradeMi...
