Designation:E2059−15StandardPracticeforApplicationandAnalysisofNuclearResearchEmulsionsforFastNeutronDosimetry1ThisstandardisissuedunderthefixeddesignationE2059;thenumberimmediatelyfollowingthedesignationindicatestheyearoforiginaladoptionor,inthecaseofrevision,theyearoflastrevision.Anumberinparenthesesindicatestheyearoflastreapproval.Asuperscriptepsilon(´)indicatesaneditorialchangesincethelastrevisionorreapproval.1.Scope1.1NuclearResearchEmulsions(NRE)havealongandillustrioushistoryofapplicationsinthephysicalsciences,earthsciencesandbiologicalsciences(1,2)2.Inthephysicalsciences,NREexperimentshaveledtomanyfundamentaldiscoveriesinsuchdiversedisciplinesasnuclearphysics,cosmicrayphysicsandhighenergyphysics.Intheappliedphysicalsciences,NREhavebeenusedinneutronphysicsexperimentsinbothfissionandfusionreactorenvironments(3-6).NumerousNREneutronexperimentscanbefoundinotherapplieddisciplines,suchasnuclearengineering,environ-mentalmonitoringandhealthphysics.GiventhebreadthofNREapplications,thereexistmanytextbooksandhandbooksthatprovideconsiderabledetailonthetechniquesusedintheNREmethod.Asaconsequence,thispracticewillberestrictedtotheapplicationoftheNREmethodforneutronmeasure-mentsinreactorphysicsandnuclearengineeringwithparticu-laremphasisonneutrondosimetryinbenchmarkfields(seeMatrixE706).1.2NREarepassivedetectorsandprovidetimeintegratedreactionrates.Asaconsequence,NREprovidefluencemea-surementswithouttheneedfortime-dependentcorrections,suchasarisewithradiometric(RM)dosimeters(seeTestMethodE1005).NREprovidepermanentrecords,sothatopticalmicroscopyobservationscanbecarriedoutanytimeafterexposure.Ifnecessary,NREmeasurementscanbere-peatedatanytimetoexaminequestionabledataortoobtainrefinedresults.1.3SinceNREmeasurementsareconductedwithopticalmicroscopes,highspatialresolutionisaffordedforfinestruc-tureexperiments.Theattributeofhighspatialresolutioncanalsobeusedtodetermineinformationontheangularanisot-ropyofthein-situneutronfield(4,5,7).Itisnotpossibleforactivedetectorstoprovides...
