Lub ntsiab lus ntawm cov tsis muaj zog nuclear
Kev zom hniav hluav taws xob yog txheej txheem hauv ib qho atomic nucleus emits qee qhov me me thiab ua lwm lub nucleus. Ib qho ntawm txoj hauv kev tseem ceeb kom paub lub nucleus. Thaum Fabkis tus kws tshawb fawb AH Becquerel tau kawm txog fluorescence ntawm uranium-bearing cov zaub mov hauv xyoo 1896, nws tau nrhiav pom tias cov ntsev uranium tuaj yeem tso tawm qhov muag tsis pom sab nraud nrog lub zog muaj zog uas tuaj yeem ua rau cov duab thaij duab rhiab. Nov yog cov duab hluav taws xob uas ua los ntawm kev lwj. Ntxiv rau cov khoom siv radionuclides uas ib txwm muaj, muaj ntau ntawm lwm qhov radionuclides uas yog cov khoom neeg tsim khoom lag luam. Cov hom kev zom zaws hluav taws xob suav nrog tsis tsuas yog alpha, beta, thiab gamma hais, tab sis kuj muaj cov lus xws li positrons, protons, neutrons, thiab neutrinos, nrog rau cov xwm txheej fontaneous thiab beta ncua hais tawm.