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