CaF2 (Eu) Scintillator, CaF2 (Eu) crystal, CaF2 (Eu) scintillation siv lead ua
Qhov zoo
● Cov cuab yeej cuab tam zoo.
● Chemically inert.
● Inherent low background radiation.
● Sib piv tau yooj yim machinable ntau yam qauv tsim qauv.
● Robust rau thermal thiab mechanical shock.
Daim ntawv thov
● Kev kuaj pom Gamma rays
● β-particles kuaj pom
Cov khoom
| Qhov ceev (g / cm3) | 3.18 |
| Crystal System | Kub |
| Atomic Number (muaj txiaj ntsig) | 16.5 ib |
| Melting Point (K) | 1691 ib |
| Thermal Expansion Coefficient (C-1) | 19.5 x 10-6 |
| Cleavage Plane | <111> |
| Hardness (Mho) | 4 |
| Hygroscopic | No |
| Wavelength ntawm Emission Max.(nm) | 4 35 |
| Refractive Index @ Emission Max | 1.47 ib |
| Lub Sijhawm Uas Tseem Ceeb (ns) | 940 ua |
| Lub teeb pom kev zoo (photons / keV) | 19 |
Product Description
CaF2:Eu yog ib qho siv lead ua scintillator uas emits lub teeb thaum nws raug rau high-zog hluav taws xob hluav taws xob.Cov crystals muaj calcium fluoride nrog lub cubic siv lead ua qauv thiab europium ions hloov hauv cov qauv lattice.Qhov sib ntxiv ntawm europium txhim kho cov khoom siv lead ua lub teeb ci, ua kom nws muaj txiaj ntsig zoo ntawm kev hloov hluav taws xob rau hauv lub teeb.CaF2: EU muaj qhov ntom ntom ntom thiab siab atomic naj npawb, uas ua rau nws ib qho khoom siv zoo rau gamma-ray kuaj tau thiab tsom xam.Tsis tas li ntawd, nws muaj lub zog daws teeb meem zoo, txhais tau tias nws tuaj yeem paub qhov txawv ntawm ntau hom hluav taws xob raws li lawv cov qib zog.CaF2:Eu yog dav siv hauv kev kho mob duab, nuclear physics thiab lwm yam kev siv uas yuav tsum tau muaj kev ua haujlwm siab hluav taws xob tshawb pom.
CaF2:Eu scintillator crystals - cov teeb meem yuav tsum paub txog: Vim nws qhov ntom ntom thiab Z qis, nws muaj lub teeb pom kev tsawg thaum cuam tshuam nrog lub zog siab gamma-rays.Nws muaj ib tug ntse nqus band ntawm 400nm uas ib nrab overlaps lub scintillation emission band
Kev Ntsuas Kev Ua Haujlwm
[1]Emission spectrum:"emission_at_327nm_excitation_1" sib raug rau kev ntsuas qhov spectrum ntawm lub teeb fluorescence emission los ntawm cov siv lead ua thaum zoo siab los ntawm lub teeb ntawm 322 nm (nrog 1.0 nm slitwidth ntawm qhov chaw monochromator).
Lub wavelength daws teeb meem ntawm spectrum yog 0.5 nm (slitwidth ntawm tus ntsuas).
[2]Excitation spectrum:"excitation_at_424nm_emission_1_mo1" sib raug rau kev ntsuas cov fluorescence tawm ntawm qhov ntev wavelength ntawm 424 nm (0.5 nm slitwidth ntawm tus kws tshuaj ntsuam) thaum kuaj lub wavelength ntawm lub teeb excitation (0.5 nm ntawm monochromed).
Lub photomultiplier (suav ib vib nas this) tau ua haujlwm zoo hauv qab saturation yog li cov nplai ntsug, txawm tias tsis ncaj ncees lawm, yog linear.
Txawm hais tias xiav emission spectrum rau Eu: CaF2 los ntawm cov chaw tsim khoom sib txawv zoo sib xws, peb pom tias qhov excitation spectrum ntawm 240 thiab 440 nm tuaj yeem sib txawv ntawm cov tuam txhab sib txawv:
txhua tus neeg tsim khoom muaj nws tus yam ntxwv spectral kos npe / "tus ntiv tes".Peb xav tias qhov sib txawv ntawm qhov sib txawv ntawm cov impurities / defects / oxidation (valence) xeev
-vim qhov sib txawv ntawm kev loj hlob thiab annealing ntawm Eu: CaF2 crystal.
