【英文标准名称】:StandardTestMethodforApplicationofIonizationChamberstoAssesstheLowEnergyGammaComponentofCobalt-60IrradiatorsUsedinRadiation-HardnessTestingofSiliconElectronicDevices
【原文标准名称】:硅电子器件辐射强度试验用钴60辐射源的低能γ成分评估的电离箱的应用的标准试验方法
【标准号】:ASTME1250-1988(2005)
【标准状态】:现行
【国别】:
【发布日期】:1988
【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】:E10.07
【标准类型】:(TestMethod)
【标准水平】:()
【中文主题词】:核能;电离;电子工程;电子仪器;硬度测量
【英文主题词】:absorbeddose;Co-60irradiators;doseenhancement;ionizationchamber;radiationhardnesstesting
【摘要】:AlthoughCo-60nucleionlyemitmonoenergeticgammaraysat1.17and1.33MeV,thefinitethicknessofsources,andencapsulationmaterialsandothersurroundingstructuresthatareinevitablypresentinirradiatorscancontributeasubstantialamountoflow-energygammaradiation,principallybyComptonscattering(1,2).3Inradiation-hardnesstestingofelectronicdevicesthislow-energyphotoncomponentofthegammaspectrumcanintroducesignificantdosimetryerrorsforadeviceundertestsincetheequilibriumabsorbeddoseasmeasuredbyadosimetercanbequitedifferentfromtheabsorbeddosedepositedinthedeviceundertestbecauseofabsorbeddoseenhancementeffects(3,4).Absorbeddoseenhancementeffectsrefertothedeviationsfromequilibriumabsorbeddosecausedbynon-equilibriumelectrontransportnearboundariesbetweendissimilarmaterials.Theionizationchambertechniquedescribedinthismethodprovidesaneasymeansforestimatingtheimportanceofthelow-energyphotoncomponentofanygivenirradiatortypeandconfiguration.Whenthereisanappreciablelow-energyspectralcomponentpresentinaparticularirradiatorconfiguration,specialexperimentaltechniquesshouldbeusedtoensurethatdosimetrymeasurementsadequatelyrepresenttheabsorbeddoseinthedeviceundertest.(SeePracticeE1249.)1.1LowenergycomponentsinthephotonenergyspectrumofCo-60irradiatorsleadtoabsorbeddoseenhancementeffectsintheradiation-hardnesstestingofsiliconelectronicdevices.Theselowenergycomponentsmayleadtoerrorsindeterminingtheabsorbeddoseinaspecificdeviceundertest.Thismethodcoversproceduresfortheuseofaspecializedionizationchambertodetermineafigureofmeritfortherelativeimportanceofsucheffects.Italsogivesthedesignandinstructionsforassemblingthischamber.1.2ThismethodisapplicabletomeasurementsinCo-60radiationfieldswheretherangeofexposureratesis7106to3102Ckg1s1(approximately100R/hto100R/s).Forguidanceinapplyingthismethodtoradiationfieldswheretheexposurerateis>100R/s,see.Note1SeeTerminologyE170fordefinitionofexposureanditsunits.1.3ThevaluesstatedinSIunitsaretoberegardedasthestandard.Thevaluesgiveninparenthesesareforinformationonly.Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappropriatesafetyandhealthpracticesanddeterminetheapplicabilityofregulatorylimitationspriortouse.
【中国标准分类号】:L10
【国际标准分类号】:31_020
【页数】:11P.;A4
【正文语种】:


【英文标准名称】:Timberandwood-basedmaterialsininternalwindows,internaldoorleavesandinternaldoorframes-Requirementsandspecifications;EnglishversionofDINEN14221:2007-01
【原文标准名称】:内窗、内门扇和内门框用木材和和木制材料.要求和规范
【标准号】:DINEN14221-2007
【标准状态】:现行
【国别】:德国
【发布日期】:2007-01
【实施或试行日期】:
【发布单位】:德国标准化学会(DIN)
【起草单位】:
【标准类型】:()
【标准水平】:()
【中文主题词】:外观;分类;定义;门框;门;木门;耐久性;折叠门的门扉;家具;内部;内门;主门框;机械性能;含水量;特性;合格;实心木块;规范;规范(验收);窗;木材;木材技术;木质板材;木制窗户
【英文主题词】:
【摘要】:ThisEuropeanStandardspecifesprinciplematerialrequirementsfortimberandwood-basedproductsininternalwindows,doorsanddoorframes(withorwithoutfixedparts),includingappearance,biologicaldurabilityandotherphysicalcharacteristics.ThisEuropeanStandardappliestofactoryassembledinternalwindows,doorleavesanddoorframesuncoatedorintendedtobecoated.IfdoorsarecoveredbyotherdecorativeveneersorfilmstherespectiveveneerorfilmProductStandardshallapply.EXAMPLETimberveneersmaybegradedtoEN635:Parts1,2,3and5,andENV635-4.
【中国标准分类号】:B70;Q71
【国际标准分类号】:79_060_01;91_060_50
【页数】:22P.;A4
【正文语种】:英语