ʻO CaF2(Eu) Scintillator, CaF2(Eu)kristal, CaF2(Eu) aniani
Pōmaikaʻi
● Waiwai mīkini maikaʻi.
● Kemika inert.
● Haʻahaʻa haʻahaʻa haʻahaʻa.
● maʻalahi machinable like bespoke structural modelling.
● Paʻa i ka wela a me ka mechanical shock.
Palapala noi
● ʻIke ʻana i ka hihi Gamma
● ʻike β-particles
Waiwai
| ʻO ka mānoanoa (g/cm3) | 3.18 |
| Pūnaehana Crystal | Cubic |
| Helu ʻAtoma (Hōpono) | 16.5 |
| Lae hehee (K) | 1691 |
| ʻO ka Coefficient Hoʻonui Thermal (C-1) | 19.5 x 10-6 |
| Mokulele ʻo Cleavage | <111> |
| Paʻakiki (Mho) | 4 |
| Hygroscopic | No |
| Ka lōʻihi o ka hawewe(nm) | 435 |
| Hōʻike Hōʻikeʻike @ Emission Max | 1.47 |
| Ka Manawa Poho Kumu (ns) | 940 |
| Hua Māmā (photons/keV) | 19 |
Hōʻike huahana
CaF2: He aniani scintillator ka Eu e hoʻopuka ana i ka mālamalama i ka wā e ʻike ʻia ai i ka pāhawewe ikehu kiʻekiʻe.Aia nā kristal i ka calcium fluoride me kahi ʻano aniani cubic a me nā ion europium i hoʻololi ʻia i ka hana lattice.ʻO ka hoʻohui ʻana o europium e hoʻomaikaʻi i nā waiwai scintillation o ke aniani, e ʻoi aku ka maikaʻi o ka hoʻohuli ʻana i ka radiation i mālamalama.CaF2: He helu atomic kiʻekiʻe a me ka helu atomic kiʻekiʻe ʻo EU, a he mea kūpono ia no ka ʻike a me ka nānā ʻana i ka gamma-ray.Eia hou, loaʻa iā ia ka hoʻonā ikehu maikaʻi, ʻo ia hoʻi, hiki iā ia ke hoʻokaʻawale i waena o nā ʻano like ʻole o ka radiation e pili ana i ko lākou pae ikehu.CaF2: Hoʻohana nui ʻia ʻo Eu i ke kiʻi lāʻau lapaʻau, ka physics nuklea a me nā noi ʻē aʻe e koi ana i ka ʻike radiation kiʻekiʻe.
CaF2:Eu scintillator crystals - nā pilikia e makaʻala: Ma muli o kona haʻahaʻa haʻahaʻa a me ka haʻahaʻa Z, he haʻahaʻa haʻahaʻa kona hua i ka wā e launa pū ai me nā kukui gamma kiʻekiʻe.Loaʻa iā ia kahi puʻupuʻu absorption ʻoi ma 400nm e uhi i kahi hapa i ka band emission scintillation.
Hoao Hana
[1]Emission spectrum:"Emission_at_327nm_excitation_1" e pili ana i ke ana ana i ke kiko o ke kukui fluorescence i hoopukaia mai ke aniani ke hoohoihoi ia e ka malamalama ma 322 nm (me 1.0 nm slitwidth ma ke kumu monochromator).
ʻO ka hoʻonā hawewe lōʻihi o ka spectrum he 0.5 nm (slitwidth of analyser).
[2]ʻAno hoʻohauʻoli:"Excitation_at_424nm_emission_1_mo1" pili i ke ana ana i ka fluorescence i hoopukaia ma ka nalu pa'a o 424 nm (0.5 nm slitwidth ma ka analyser) oiai e nana ana i ka nalu o ke kukui excitation (0.5 nm slitwidth on monochromator).
Ke holo pono nei ka photomultiplier (helu i kēlā me kēia kekona) ma lalo o ka saturation no laila he laina laina nā unahi kū pololei, ʻoiai he ʻokoʻa.
ʻOiai ua like ka spectrum emission blue no Eu:CaF2 mai nā mea hana like ʻole, ʻike mākou he hiki ke ʻokoʻa ka spectrum excitation ma waena o 240 a me 440 nm ma waena o nā mea hana like ʻole:
Loaʻa i kēlā me kēia mea hana i kona ʻano kikoʻī kikoʻī kikoʻī / "manaʻo manamana lima".Manaʻo mākou e hōʻike ana nā ʻokoʻa i nā pae like ʻole o nā ʻano haumia / kīnā / oxidation (valence).
–ma muli o nā kūlana ulu like ʻole a me ka hoʻopili ʻana o ka kristal Eu:CaF2.
