铟化合物掺杂塑料闪烁体制备与性能研究OA

Plastic scintillators have been extensively used in the field of radiation detection due to their low cost,good environmental stability,and simple large-scale preparation.Common plastic scintillators generally have insuffi-cient detection efficiency due to their low effective atomic number,which limits their further application in high ener-gy radiation and other fields.There are various methods to introduce materials with high effective atomic number into plastic scintillators.Among them,organic heavy metal compounds,due to their partial properties as organic com-pounds,can dissolve in polymer matrices,providing a more effective way for plastic scintillators to improve radiation stopping power and detection efficiency.In this work,tris(2,4-pentanedionato)indium(Ⅲ)(In(acac)3)was select-ed as a dopant,plastic scintillators doped with different concentrations of In(acac)3 were successfully prepared for the first time,and the changes in optical and scintillation properties of plastic scintillators with different doping con-centrations were systematically studied.As the doping concentration increases,the effective atomic number and ab-sorption coefficient of the plastic scintillator gradually increase,while the light yield progressively decreases.Among them,mass fraction 3%In(acac)3 doped plastic scintillator achieves an optimal balance between light yield and de-tection efficiency,resulting in an enhanced gamma count rate.