I-CaF2(Eu) Scintillator, CaF2(Eu)crystal, CaF2(Eu)scintillation crystal
Inzuzo
● Isakhiwo esihle sikamakhenikha.
● I-inert ngamakhemikhali.
● Imisebe engemuva ephansi engokwemvelo.
● Imodeli yesakhiwo ehlelwa kalula ngokuqhathaniswa.
● Iqinile ekushayweni okushisayo noma kwemishini.
Isicelo
● Ukutholwa kwe-Gamma ray
● ukutholwa kwezinhlayiya ze-β
Izakhiwo
| Ukuminyana(g/cm3) | 3.18 |
| I-Crystal System | I-Cubic |
| Inombolo Ye-athomu (Iyasebenza) | 16.5 |
| I-Melting Point (K) | 1691 |
| I-Thermal Expansion Coefficient (C-1) | 19.5 x 10-6 |
| Cleavage Plane | <111> |
| Ukuqina (Mho) | 4 |
| I-Hygroscopic | No |
| I-Wavelength ye-Emission Max.(nm) | 435 |
| I-Refractive Index @ Emission Max | 1.47 |
| Isikhathi Sokubola Okuyisisekelo (ns) | 940 |
| I-Light Yield (photons/keV) | 19 |
Incazelo Yomkhiqizo
I-CaF2:I-Eu iyikristalu ye-scintillator ekhipha ukukhanya lapho ichayeke emisebeni enamandla amakhulu.Amakristalu aqukethe i-calcium fluoride ene-cubic crystal structure kanye nama-europium ions afakwe endaweni ye-lattice structure.Ukwengezwa kwe-europium kuthuthukisa izakhiwo ze-crystal scintillation, kuyenze isebenze kahle ekuguquleni imisebe ibe ukukhanya.I-CaF2:I-Eu inokuminyana okuphezulu nenombolo ye-athomu ephezulu, okuyenza ibe into ekahle yokuthola nokuhlaziya i-gamma-ray.Ukwengeza, inokulungiswa okuhle kwamandla, okusho ukuthi ingakwazi ukuhlukanisa phakathi kwezinhlobo ezahlukene zemisebe ngokusekelwe emazingeni azo amandla.I-CaF2:I-Eu isetshenziswa kakhulu ekucabangeni kwezokwelapha, i-nuclear physics nezinye izinhlelo zokusebenza ezidinga ukutholwa kokusebenza okuphezulu kwemisebe.
I-CaF2:Amakristalu e-Eu scintillator - izindaba okufanele wazi: Ngenxa yokuminyana okuphansi kanye no-Z ophansi, inokukhiqiza okuphansi kokukhanya lapho ihlangana ne-gamma-ray yamandla amakhulu.Inebhande lokumunca elicijile elingu-400nm elidlula kancane ibhendi ye-scintillation emission
Ukuhlolwa kokusebenza
[1]I-spectrum ye-Emission:I-“emission_at_327nm_excitation_1” ihambisana nokulinganisa i-spectrum yokukhanya kwe-fluorescence okukhishwa kukristalu uma kujatshulwe ukukhanya okungu-322 nm (no-1.0 nm slitwidth kumthombo we-monochromator).
Ukulungiswa kwe-wavelength kwe-spectrum ngu-0.5 nm (slitwidth of analyser).
[2]I-spectrum yenjabulo:I-“excitation_at_424nm_emission_1_mo1” ihambisana nokulinganisa i-fluorescence ekhishwa kubude begagasi obugxilile obungu-424 nm (0.5 nm slitwidth kumhlaziyi) ngenkathi iskena ubude begagasi bokukhanya okujabulisayo (0.5 nm monochromatwidth).
I-photomultiplier (izibalo ngesekhondi ngayinye) ibisebenza ngaphansi kokugcwaliswa kwesikhala ngakho-ke izikali eziqondile, nakuba zenza okuthile, ziwumugqa.
Yize i-spectrum ye-blue emission ye-Eu:CaF2 evela kubakhiqizi abahlukene ifana, sithola ukuthi i-spectrum yenjabulo phakathi kuka-240 no-440 nm ingahluka kakhulu phakathi kwabakhiqizi abahlukene:
umkhiqizi ngamunye unesignesha yakhe ye-spectral / "izigxivizo zeminwe".Sisola ukuthi umehluko ubonisa amazinga ahlukene okungcola / ukukhubazeka / i-oxidation (valence) state
-ngenxa yezimo ezihlukene zokukhula kanye nokuxhunywa kwekristalu ye-Eu:CaF2.
