Nā mea ʻike makahoʻohana ʻia no ka hoʻoholo ʻana i ka ʻāpana ikaika o ka spectrum X-ray.I loko o ka scintillation detectors ua hauʻoli ka mea o ka mea ʻike i ka luminescence (ka hoʻokuʻu ʻana o nā kiʻi kukui ʻike ʻia a kokoke paha i ʻike ʻia) e nā photons i hoʻopaʻa ʻia.ʻO ka nui o nā kiʻi kiʻi i hana ʻia e like me ka ikehu o ke kiʻi kumu mua.ʻOhi ʻia nā pulu māmā e kahi photo-cathode.Electrons, emitted mai kaphotocathode, ua hoʻonui ʻia e ka volta kiʻekiʻe i hoʻopili ʻia a hoʻonui ʻia ma nā dynodes o ka photomultiplier i hoʻopili ʻia.Ma ka puka ʻana o ka mea ʻike maka e hoʻopuka ʻia kahi pulse uila e like me ka ikehu i hoʻopaʻa ʻia.ʻO ka awelika ikehu e pono ai e hana i hoʻokahi electron ma ka photocathode ma kahi o 300 eV.No ka meaX-ray detectors, i ka hapanui o na hihia i ho'ā 'ia nā kristal NaI a i 'ole CsI methalliumhoʻohana ʻia.Hāʻawi kēia mau kristal i ka ʻike maikaʻi, kiʻekiʻe photon pono a hiki ke hana ʻia i nā nui nui.
Hiki i nā mea ʻike Scintillation ke ʻike i ke ʻano o ka radiation ionizing, me nā ʻāpana alpha, nā ʻāpana beta, nā kukui gamma a me nā kukui X.Hoʻolālā ʻia kahi scintillator e hoʻololi i ka ikehu o ka radiation hanana i ke kukui ʻike ʻia a i ʻole ultraviolet, hiki ke ʻike ʻia a ana ʻia e kahimea ʻike kiʻi sipm.Hoʻohana ʻia nā mea scintillator ʻokoʻa no nā ʻano pāhawewe like ʻole.No ka laʻana, hoʻohana mau ʻia ka scintillator organik no ka ʻike ʻana i nā ʻāpana alpha a me beta, ʻoiai ʻo ka scintillator inorganic e hoʻohana mau ʻia e ʻike i nā kukuna gamma a me nā kukui X.
ʻO ke koho o ka scintillator e pili ana i nā mea e like me ka nui o ka ikehu o ka radiation e ʻike ʻia a me nā koi kikoʻī o ka noi.
Ka manawa hoʻouna: Oct-26-2023