Kev Tshawb Nrhiav Kev Ua Haujlwm ntawm Radiation Detectors
Qhov piv ntawm tus naj npawb ntawm cov khoom kuaj pom los ntawm tus ntes mus rau tus naj npawb ntawm cov khoom ntawm qhov xwm txheej ntawd ntawm tus ntes thaum lub sijhawm tib lub sijhawm. Nws muaj feem xyuam rau lub ntim rhiab, geometry thiab rhiab heev ntawm tus ntes rau qhov xwm txheej. Feem ntau, detectors yuav tsum muaj siab nrhiav kom tau efficiency. Tab sis nyob rau qee lub sijhawm tshwj xeeb, xws li nyob rau hauv cov hluav taws xob muaj zog heev, lub tshuab ntes yuav tsum muaj qis dua. Nws hais txog qhov sib piv ntawm tus naj npawb ntawm cov xwm txheej photon tsim rau tus naj npawb ntawm cov xwm txheej photons hauv thawj txheej txheem ntawm photon thiab ntes kev sib cuam tshuam. Nws piav qhia txog tus ntes lub peev xwm tau txais thiab sau cov ntaub ntawv. Cov xwm txheej photons muaj peev xwm nkag mus rau qhov nruab nrab lossis cuam tshuam los ntawm qhov nruab nrab. Qee lub sij hawm qhov nruab nrab absorbs ob peb photons los ua ib qho kev tshwm sim photon, thiab qee zaum qhov kev tshwm sim photon generated tsis raug kuaj pom, yog li qhov quantum efficiency ntawm cov khoom siv dav dav yog tsawg dua 1.
