PbWO₄ Scintillator, Pwo Crystal, Pbwo4 Crystal, Pwo Scintillator
Uru
● Ike nkwụsị nke ọma
● Nnukwu njupụta
● Nnukwu irradiation ike
● Oge ire ere ngwa ngwa
Ngwa
● Positron Emission Tomography (PET)
● Fiziks oghere ike dị elu
● Ngwá agha nuklia dị elu
● Ọgwụ nuklia
Njirimara
| Njupụta (g/cm3) | 8.28 |
| Nọmba Atọmic (dị irè) | 73 |
| Ogologo Radiation (cm) | 0.92 |
| Oge mmebi (ns) | 6/30 |
| Ogologo ogologo (Max. Emission) | 440/530 |
| Igwe fotoelectron % nke NaI(Tl) | 0.5 |
| Ebe mgbaze (°C) | 1123 |
| Isi ike (Mho) | 4 |
| Ntụgharị ntụgharị uche | 2.16 |
| Hygroscopic | No |
| Mgbasawanye okpomọkụ Coeff. (C⁻¹) | 10.0 x 10 ‾ |
| Ụgbọ elu mgbawa | (101) |
Nkọwa ngwaahịa
Lead tungstate (PbWO₄/PWO) bụ kristal scintillation a na-ejikarị na nnwale physics dị elu yana na ngwa onyonyo ahụike dịka PET (positron emission tomography) na CT (computed tomography) nyocha.Otu n'ime ihe ndị bụ isi nke PWO, ọ nwere nnukwu njupụta, nke na-enye ohere PWO iji nweta ụzarị gamma nke ọma karịa kristal scintillation ndị ọzọ.N'aka nke ya, nke a na-ebute nrịbama-na-mkpọtụ dị elu yana mkpebi nchọpụta radieshon ka mma.A na-amakwa kristal PWO maka oge nzaghachi ngwa ngwa ha, nke na-eme ka ha dabara maka usoro nnweta data dị elu.
Ha na-eguzogidekwa mmebi radieshon na nkwụsi ike ogologo oge, na-eme ka ha bụrụ nhọrọ a pụrụ ịdabere na ya maka ngwa gburugburu ebe obibi siri ike.Otú ọ dị, mmepụta ọkụ dị ntakịrị nke kristal PWO ma e jiri ya tụnyere ihe ndị ọzọ scintillation na-egbochi mmetụta ha na ngwa ụfọdụ.A na-eji usoro Czochralski tolite kristal ma nwee ike ịkpụzi ya n'ụdị dị iche iche dabere na ngwa ahụ.kristal PWO scintillator nwere okwu ndị a nke ekwesịrị ịdeba ama: PWO nwere mmepụta ọkụ dị ntakịrị.Ha na-eme ka ọ ghara ịnakwere maka ngwa ụfọdụ.Ha na-enwe ike imebi radieshon.Malite na doses n'etiti 1 na 10 Grey (10² - 10³ rad).Na reversible na oge ma ọ bụ annealing.
Mbufe nke PWO
