I-PbWO₄ Scintillator, i-Pwo Crystal, i-Pbwo4 Crystal, i-Pwo Scintillator

incazelo emfushane:

I-Lead Tungstate - i-PWO (noma i-PbWO₄) iyimunca-reyi ye-gamma esebenza kahle kakhulu ngenxa yokuminyana kwayo okuphezulu kanye no-Z ophakeme. Iphinde isheshe kakhulu ngobude bemisebe emifushane kakhulu kanye ne-moliere radius.

Thumela i-imeyili kithi

Imininingwane Yomkhiqizo

Omaka bomkhiqizo

Inzuzo

● Amandla amahle okumisa

● Ukuminyana okuphezulu

● Amandla okukhipha imisebe aphezulu

● Ukubola okusheshayo

Isicelo

● I-Positron Emission Tomography (PET)

● I-physics yesikhala samandla aphezulu

● Amandla amakhulu enuzi

● Imithi yenuzi

Izakhiwo

Ukuminyana(g/cm³)	8.28
Inombolo Ye-athomu (Iyasebenza)	73
Ubude Bemisebe (cm)	0.92
Isikhathi sokubola	6/30
I-Wavelength (Ubuningi bokukhishwa)	440/530
I-Photoelectron Yield % ye-NaI(Tl)	0.5
Iphoyinti Lokuncibilika(°C)	1123
Ukuqina (Mho)	4
I-Refractive Index	2.16
I-Hygroscopic	No
I-Thermal Expansion Coeff.( C⁻¹)	10.0 x 10‾⁶
Cleavage Plane	(101)

Incazelo Yomkhiqizo

I-lead tungstate (PbWO₄/PWO) iyikristalu ye-scintillation evame ukusetshenziswa ezivivinyweni ze-physics yamandla aphezulu kanye nasezinhlelweni zezithombe zezokwelapha ezifana ne-PET (positron emission tomography) kanye nezikena ze-CT (computed tomography).Enye yezinto ezibalulekile ze-PWO, inokuminyana okuphezulu, okuvumela i-PWO ukuthi imunce imisebe ye-gamma ngokuphumelelayo kunamanye amakristalu e-scintillation.Ngokulandelayo, lokhu kuphumela esilinganisweni esiphezulu sesignali-kuya-nomsindo kanye nokutholwa okungcono kokutholwa kwemisebe.Amakristalu e-PWO ayaziwa nangezikhathi zawo zokuphendula ngokushesha, okuwenza afanelekele izinhlelo zokutholwa kwedatha enesivinini esikhulu.

Ziyakwazi futhi ukumelana nokulimala kwemisebe nokuzinza kwesikhathi eside, okuzenza zibe ukukhetha okuthembekile kwezicelo zemvelo ezinokhahlo.Kodwa-ke, ukuphuma kokukhanya okuphansi uma kuqhathaniswa kwamakristalu e-PWO uma kuqhathaniswa nezinye izinto ze-scintillation kunciphisa ukuzwela kwawo kwezinye izinhlelo zokusebenza.Amakristalu avame ukukhuliswa kusetshenziswa indlela ye-Czochralski futhi angabunjwa abe amafomu ahlukahlukene ngokuya ngesicelo.Amakristalu e-PWO scintillator anezinkinga ezilandelayo okufanele ziqashelwe: I-PWO inokukhishwa kokukhanya okuphansi.Ama-radioactive awenza angamukeleki kwezinye izinhlelo zokusebenza.Basengozini yokulimala ngemisebe.Ukuqala ngemithamo ephakathi kuka-1 no-10 Gray (10² - 10³ rad).Futhi ibuyiselwa emuva ngokuhamba kwesikhathi noma i-anneal.