花岗岩近表层~(134)Cs活度直接测量

    • 摘要: 核素在岩石裂隙中迁移时,一方面随裂隙水对流弥散,另一方面吸附在岩石裂隙表面并向岩石中扩散。因此,除了测量裂隙出口端流出液浓度外,还需测定裂隙近表层的放射性活度分布。文章描述了岩石裂隙近表层134Cs活度直接测量装置和测量方法,并给出134Cs在花岗岩裂隙近表层活度分布测量结果。

       

      Abstract: DIRECTMEASUREMENTOF134CsACTIVITYONSUPERFICIALSTRATIFICATIONOFGRANITEFRACTURELiChunjiangNeShiweiMaRuweiChenShi(ChinaInstituteofRadiationProtection,Taiyuan030006)ABSTRACTWhenanuclidemigratesinrockfracture,itconvectsanddispersesalongthefracturewateraswelasabsorbsandatachesonrockfracturesurface.Besidesthedeterminationofexitdensityofthefracture,thedensitydistributionofnuclidesinrocksandtheactivitydis-tritutiononfracturesurfaceshouldalsobedetermined.Thedirectmeasurementdeviceandmeansofmeasurementofthesuperficialactivityonrockfracturearedescribedinthispaper,Thedeterminationresultofsuperficialactivitydistributionof134Csongranitefractureisalsogiven.KeywordsSuperfacialstratification134CsDirectmeasurementGranitefracture

       

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