NaI (Tl) yog cov khoom siv hluav taws xob ntau tshaj plaws vim tias muaj txiaj ntsig zoo.Nws muaj lub teeb tso zis ntau dua, kev tshawb pom ntau dua, muaj qhov loj dua thiab muaj txiaj ntsig zoo dua piv nrog lwm cov ntaub ntawv scintillation.NaI (TI) yog hygroscopic thiab yuav tsum tau hermetically encapsulated nyob rau hauv vaj tse (Stainless Steel, Titanium Alloy, Al tsev lwm txoj).
Zoo thiab Hom Loj: Kawg-zoo, cubic Shape, sab qhib zoo, lub tog raj kheej.Dia1"x1", Dia2"x2, Dia3"x3", Dia5"x5", 2"x4"x16", 4"x4"x16", Anti-Compton ntes.
Muaj nyob rau hauv ib qho siv lead ua, polycrystalline lossis forged crystals rau kev lag luam roj.