人员出入口核材料放射性监测装置的研制

:1999206215;:2000203206:(1939),,,,345Vol.34,No.520009AtomicEnergyScienceandTechnologySep.2000,,,,,,,(,102413):,:;;:TL812+11:A:100026931(2000)0520445203,(),,,(SNM),,[1],,,,1NaI(Tl)(),,;,,2300mm1740mm360mm,2000mm740mm5:1),,NaI(Tl);2)14(ST10175mm50mmNaI(Tl)GDB276),90mm130mm6mm;3)4,4(),14;4)(/,),414,;5),()()2211SNM(5V/015s),SNM,,SNM,,M=B+s:B;s;,,24:,;,SNM,:G=B+S:G;SGM,212(),,Bs(012s),300(),,,,1),30s,,((25cm));,,,2)(112m/s),,,,,,,,,331114()64434(60450keV):,14Bb=242176s-1;(90mm130mm6mm),14Ba=82111s-1Ba/Bb=34%312FAP(n/N),=4,N=1127105,n=23,FAP()=11810-4(1/5500)313:(1179210-12Ckg-1s-1,50%95%)(g,HEULBPu),:HEU,1103g(95%,1179210-12Ckg-1s-1,);LBPu,010318g(95%,1179210-12Ckg-1s-1,),4,,:[1]FehlauPE,PrattJC,MarkinJT,etal.SmarterRadiationMonitorsforSafeguardsandSecurity[J].JournaloftheInstituteofNuclearMaterialsManagement,1983,12:122126.PedestrianPortalMonitorforSpecialNuclearMaterialHUANGDe2bao,ZHANGWen2liang,LUZhao,ZHANGXiao2hong,ZHAORong2sheng,LIUDa2ming,LIJi2min,TONGBo2ting(ChinaInstituteofAtomicEnergy,P.O.Box275248,Beijing102413,China)Abstract:Apedestrianportalmonitorforspecialnuclearmaterial(SNM)anditssoftwarearede2veloped.Itsperformancesareasfollows:detectionsensitivitiesare1.03gand0.0318grespec2tivelyforhighenrichmenturaniumandlowburnedplutonium;falsealarmprobabilityis1/5500.TheportalmonitorforSNMisusedtopreventunauthorizedremovaloffissilematerialssuchas235Uand239Puinprotectedarea.Themonitorusesapersonalcomputertoprovideautomaticoperation.Thesequentialprobabilityratiotest(SPRT)algorithmisusedtodeterminethepresenceofSNMoverbackground.Keywords:nuclearsafeguards;portal;specialnuclearmaterialmonitor7445: