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 CaF2(Eu) - Calcium Fluoride (Eu)


CaF2(Eu) is a useful scintillator for detecting charged particles and soft gamma-rays  up to several

hundred keV. Additionally, in crystal form CaF2(Eu) is optically transparent over a wide range from

0.13 to 10µm and widely used to fabricate optical components.  


A CaF2(Eu) scintillator crystal is:



Issues to be aware of:



Calcium Fluoride (Eu)- CaF2(Eu) - is a useful and proven scintillator for applications such as:







Calcium Fluoride (Eu) - CaF2(Eu) Properties


Properties

Scintillator/Optical

Units

Value

Wavelength (Max. Emission)

nm

435

Lower Wavelength Cut-off

nm

395

Decay Time

ns

950

Light Yield

photons/keV

30

Photoelectron Yield

% of NaI(Tl)

50

Radiation Length

cm

3.05

Optical Transmission

µm

0.13 -10µm

Transmittance

%

TBA

Refractive Index


1.47 (@ 435nm)

Reflection Loss/Surface

%

5.4

Properties

Mechanical

Units

Value

Density

g/cm³

3.18

Atomic Number (Effective)


16.5

Melting Point

ºK

1360

Linear Expansion Coeff.

C⁻¹

19.5 x 10‾⁶

Thermal Conductivity

Wm⁻¹K⁻¹

9.7

Crystal Structure


Cubical

Hardness

Mho

4

Hygroscopic


No

Solubility

g/100gH0

0.0017

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CaF2(Eu) Scintillation Crystals - Sizes


Diameters:  Up to 360mm

Lengths:      Up to 150mm






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