Designation:E1026–04e1AnAmericanNationalStandardStandardPracticeforUsingtheFrickeReference-StandardDosimetrySystem1ThisstandardisissuedunderthefixeddesignationE1026;thenumberimmediatelyfollowingthedesignationindicatestheyearoforiginaladoptionor,inthecaseofrevision,theyearoflastrevision.Anumberinparenthesesindicatestheyearoflastreapproval.Asuperscriptepsilon(e)indicatesaneditorialchangesincethelastrevisionorreapproval.e1NOTE—Equations3and4werecorrectededitoriallyinAugust2005.1.Scope1.1Thispracticecoverstheproceduresforpreparation,testingandusingtheacidicaqueousferrousammoniumsulfatesolutiondosimetrysystemtomeasureabsorbeddosetowaterwhenexposedtoionizingradiation.Thesystemconsistsofadosimeterandappropriateanalyticalinstrumentation.ThesystemwillbereferredtoastheFrickesystem.Itisclassifiedasareference-standarddosimetrysystem(seeISO/ASTM51261).1.2ThepracticedescribesthespectrophotometricanalysisproceduresfortheFrickedosimeter.1.3Thispracticeappliesonlytogammarays,x-rays(bremsstrahlung),andhigh-energyelectrons.1.4Thispracticeappliesprovidedthefollowingaresatis-fied:1.4.1Theabsorbeddoserangeshallbefrom20to400Gy(1).21.4.2Theabsorbed-doseratedoesnotexceed106Gy·s−1(2).1.4.3Forradioisotopegamma-raysources,theinitialpho-tonenergyisgreaterthan0.6MeV.Forx-rays(bremsstrahl-ung),theinitialenergyoftheelectronsusedtoproducethephotonsisequaltoorgreaterthan2MeV.Forelectronbeams,theinitialelectronenergyisgreaterthan8MeV(seeICRUReports34and35).NOTE1—Thelowerenergylimitsgivenareappropriateforacylindri-caldosimeterampouleof12-mmoutsidediameter.Correctionsfordosegradientsacrossanampouleofthatdiameterorlessarenotrequired.1.4.4Theirradiationtemperatureofthedosimetershouldbewithintherangeof10to60°C.1.5Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappro-priatesafetyandhealthpracticesanddeterminetheapplica-bilityofregulatorylimitationspriortouse.2.ReferencedDocuments2.1ASTMStandards:3C912Practi...
