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【英文标准名称】:StandardGuideforSimulationofHeliumEffectsinIrradiatedMetals
【原文标准名称】:辐照金属中氦效应模拟用标准指南
【标准号】:ASTME942-1996(2003)
【标准状态】:现行
【国别】:
【发布日期】:1996
【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】:E10.08
【标准类型】:(Guide)
【标准水平】:()
【中文主题词】:氦;核技术;金属;核能;辐照;模拟
【英文主题词】:heliumanalysis;heliumeffects;ionirradiation;radiationdamage;tritiumtrick
【摘要】:Heliumisintroducedintometalsasaconsequenceofnuclearreactions,suchas(n,x03B1;),orbytheinjectionofheliumintometalsfromtheplasmainfusionreactors.Thecharacterizationoftheeffectofheliumonthepropertiesofmetalsusingdirectirradiationmethodsmaybeimpracticalbecauseofthetimerequiredtoperformtheirradiationorthelackofaradiationfacility,asinthecaseofthefusionreactor.Simulationtechniquescanacceleratetheresearchbyidentifyingandisolatingmajoreffectscausedbythepresenceofhelium.Thewordsimulationisusedhereinabroadsensetoimplyanapproximationoftherelevantirradiationenvironment.Therearemanycomplexinteractionsbetweentheheliumproducedduringirradiationandotherirradiationeffects,socaremustbeexercisedtoensurethattheeffectsbeingstudiedareasuitableapproximationoftherealeffect.Bywayofillustration,detailsofheliumintroduction,especiallytheimplantationtemperature,maydeterminethesubsequentdistributionofthehelium(thatis,dispersedatomistically,insmallclustersinbubbles,etc.)1.1Thisguideprovidesadviceforconductingexperimentstoinvestigatetheeffectsofheliumonthepropertiesofmetalswherethetechniqueforintroducingtheheliumdiffersinsomewayfromtheactualmechanismofintroductionofheliuminservice.Simulationtechniquesconsideredforintroducingheliumshallincludechargedparticleimplantation,exposureto-emittingradioisotopes,andtritiumdecaytechniques.Proceduresfortheanalysisofheliumcontentandheliumdistributionwithinthespecimenarealsorecommended.1.2Twoothermethodsforintroducingheliumintoirradiatedmaterialsarenotcoveredinthisguide.Theyaretheenhancementofheliumproductioninnickel-bearingalloysbyspectraltailoringinmixed-spectrumfissionreactors,andisotopictailoringinbothfastandmixed-spectrumfissionreactors.ThesetechniquesaredescribedinRefs(1-5).Dualionbeamtechniques(6)forsimultaneouslyimplantingheliumandgeneratingdisplacementdamagearealsonotincludedhere.ThislattermethodisdiscussedinPracticeE521.1.3Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappropriatesafetyandhealthpracticesanddeterminetheapplicabilityofregulatorylimitationspriortouse.
【中国标准分类号】:H04
【国际标准分类号】:
【页数】:12P.;A4
【正文语种】: