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Eu:CaF2

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Europium doped calcium fluoride crystal (Eu:CaF2) shows high transparency in a wide wavelength range, high chemical resistance, high laser damage threshold and low refractive index. CaF2 shows strong shock resistance, thermal shock resistance and good mechanical processing performance. Eu:CaF2 exhibits chemical inertness. It is hardly soluble in water and insoluble in most organic substances. Its emission peak is located at 435 nm, which matches well with the photomultiplier tube (PMT) and silicon photodiode (PD).

Eu:CaF2 scintillation crystal becomes an ideal material for the detection of low-energy γ- rays and charged particles (especially β- rays). It is widely used in low-energy nuclear physics experiments and the detection of charged ions in nuclear reactors, and the environment radiation monitoring and radiological medical diagnosis and other fields.

Features Applications
  • Good mechanical properties
  • High light output
  • Chemically inert
  • High Transparency
  • High Chemical Resistance
  • High Laser Damage Threshold
  • Low Refractive Index
  • γ-ray detection
  • β-ray detection
  • Radioactivity medical science diagnose
  • Scintillation screens
  • 2.8µm Laser

Material Features

Chemical formulaEu:CaF2
Density (g/cm3)3.18
Melting point (℃)1360
Hardness (Mho)4
HygroscopicNo
Cleavage<111>
Solubility (g/100gH2O)0.0017
Thermal conducticity (W/mK)9.7
Thermal expansion coeff (C-1)19.5*10-6

Scintillator Properties

Wavelength (Max. emission) (nm)435
Wavelength range (nm)395-525
Decay time (ns)950
Light output (photons/MeV)30000
Rafractive index 1.47 @435nm
Radiation length (cm)3.05
Optical transmission (um)0.13-10
Transittance (%)TBA
Reflection loss/surface (%)5.4
Energy resolution (%)<8
Neutron capture cross-section (barns)TBA
Afterglow (%)<0.3

Spectra

CaF2&Eu：CaF2 X-ray fluorescence-Eu dopedCaF2&Eu：CaF2 X-fluorescence spectrum --pure
CaF2&Eu：CaF2 decay curve --pure

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