Ce: YAG - Crystal Scintillation Muhiim ah
Sharaxaada Alaabta
Ce:YAG waa crystal scintillation muhiim ah oo leh waxqabadka scintillation aad u fiican. Waxay leedahay hufnaan iftiin sare leh iyo garaaca indhaha oo ballaaran. Faa'iidada ugu weyni waa in hirarkeeda dhexe ee iftiinka iftiinka uu yahay 550nm, kaas oo si wax ku ool ah loogu dari karo qalabka lagu ogaanayo sida silicon photodiodes. Marka la barbar dhigo Karistaanka CsI scintillation, Ce: YAG scintillation crystal waxay leedahay waqti qudhun degdeg ah, iyo Ce: YAG scintillation crystal ma laha wax liidasho ah, iska caabin heerkul sare ah, iyo waxqabad heerkuleed deggan. Waxaa inta badan loo isticmaalaa ogaanshaha walxaha iftiinka, ogaanshaha qayb ka alfa, ogaanshaha gamma ray iyo meelaha kale. Intaa waxaa dheer, waxaa sidoo kale loo isticmaali karaa in sawir-qaadista elektarooniga ah (SEM), muraayadda sawir-qaadista ee cabbirka sare ee muraayadda iyo qaybaha kale. Sababtoo ah iskudarka kala soocida yar ee Ce ions ee jaantuska YAG (qiyaastii 0.1), way adagtahay in lagu daro Ce ions kiriimyada YAG, iyo dhibka korriinka kristantarku wuxuu kordhiyaa kororka dhexroorka crystal.
Ce: YAG single crystal waa walax si dhakhso leh u qudhuntay oo leh sifooyin dhammaystiran oo heer sare ah, oo leh iftiin sare (20000 photons / MeV), suus dhalaalaysa (~ 70ns), guryaha heerkulbeegyada heerkulbeegga ah, iyo hirarka ugu sarreeya ee iftiinka (540nm) Waxay si fiican ugu habboon tahay helitaanka dhererka xasaasiga ah ee PD iyo dhererka iftiinka iftiinka ee caadiga ah garaaca wadnaha ayaa kala saara gamma rays iyo alfa particles, Ce: YAG waxay ku haboon tahay in la ogaado qaybaha alfa, electrons iyo beta rays, iwm. Qalabka farsamada ee wanaagsan ee qaybaha la soo dalacday, gaar ahaan Ce: YAG single crystal, waxay suurtogal u tahay in la diyaariyo filimyo khafiif ah oo dhumucdiisu ka yar tahay 30um. Ce: YAG scintillation detectors ayaa si weyn loogu isticmaalaa mikroskoobyada elektarooniga ah, tirinta beta iyo raajada, korantada iyo sawirada raajada iyo meelaha kale.
Astaamaha
● Dhererka mawjadaha (sii daynta ugu badan): 550nm
● Dhererka hirarka: 500-700nm
● Waqtiga qudhunka: 70ns
● Wax soo saarka iftiinka (Sawirro/Mev): 9000-14000
● Tusaha wax-soo-saarka (ugu badnaan qiiqa): 1.82
● Dhererka shucaaca:3.5cm
● Gudbinta (%): TBA
● Gudbinta indhaha (um) :TBA
● Milicsiga Luminta/ Dusha sare (%) :TBA
● Xalinta tamarta (%):7.5
● Siideynta fudud [% ee NaI(Tl)] ( fallaadhaha gamma ) :35